Solve for x.
21 + 3x = -15

Answers

Answer 1
The answer to this question is x=-12
Answer 2

Answer:

21+3x=-15

-21 -21

3x=-36

÷3 ÷3

x=-12

x=-12


Related Questions

i need help on this problem im stuck on it​

Answers

Answer:2.8

or

2.83333

Step-by-step explanation:

Given : A table is given to us . The table is ,

[tex]\begin{tabular}{|c|c|}\cline{1-2} \bf Day of week & \bf Minutes Spend \\\cline{1-2} Sunday & 23 \\\cline{1-2} Monday & 38 \\\cline{1-2} Tuesday & 42 \\\cline{1-2} Wednesday & 17 \\\cline{1-2} Thursday & 29 \\\cline{1-2} Friday & 10 \\\cline{1-2} Saturday & 11 \\\cline{1-2} \end{tabular}[/tex]

To Find : The total hours spend by Marisol on reading .

Solution : Total hours spend on reading will be equal to the sum of time taken by him each day on reading .

So , total time of reading will be ;

= (23 + 38 + 42 + 17 + 29 + 10 + 11) min

= 170 min .

= 120min + 50min .

= 2 hours 50mim .

[tex]\boxed{\red{\bf Correct\:option - [d]}}[/tex]

-3 = 1 3/5 + m .
what is m

Answers

Answer:

m = -4 3/5   or   -4.6

Step-by-step explanation:

First, we need to isolate the variable, m. We subtract 1 3/5 on both sides of the equation, and then we should get -4 3/5 = m.

hope this helped !! :D

What do you think would happen if you kept writing zeros to the right of the decimal point in 1.000 and continued to divide ?

Answers

Answer:

The same thing would happen over and over again.

What is the area of this figure?
9 m
7 m
6 m
2 m
5 m
6 m
3 m
5 m
Write your answers using decimals, if necessary.

Answers

340,200? 8 have no idea I just multiplied all of the numbers since it says area

The total area of the composite figure made up of triangle, rectangle and square is; 106 m²

What is the Area of the Composite Figure?

The area of the Triangle is;

A_t = (1/2) * (6 + 4) * 9

A_t = 45 m²

Area of Square;

A_s = 5 * 5

A_s = 25 m²

Area of Rectangle is;

A_r = 6 *  6

A_r = 36 m²

Total Area = 45 m² + 25 m² + 36 m²

Total Area = 106 m²

Read more about Area of Composite Figure at; https://brainly.com/question/10254615

#SPJ2

can someone explain to me how to do this

Answers

Answer:

x=45

Step-by-step explanation:

We know that 2y+6 and 8y-102 are vertical angles to each other. This means that 2y+6=8y-102. [tex]6y=108[/tex], which means that y=18. [tex]2\cdot(18)+6=36+6=42[/tex]. Since one line is a straight angle, it is 180 degrees we can do [tex]3x=180-45=135[/tex], so x=45.

Answer:

y = 18

x = 46

measures of the angles:

8y - 102 = 42

2y + 6 = 42

3x = 138

Step-by-step explanation:

So first remember the verticle angles theorem, which states that, when two lines intersect there will be four angles formed; the angles that are opposite from each other will be congruent, that is,  they will have the same measure.

Using this we know that opposite angles have to be congruent:

so

(2y + 6) = (8y -102)

now there is an algebra equation that can be solved by inverse operations and simplifying

2y + 6 = 8y - 102

    +102      +102

2y + 108 = 8y

-2y             -2y

108 = 6y

/6        /6

18 = y

Also, remember that two adjacent angles that form a line will add up to 180,

so

3x + (2y + 6) = 180

*note: I could have also used (8y - 102) but I choose to use (2y + 6)

so now substitute in the value of y that was found

y = 18

3x + (2 * 18 + 6) = 180

simplify

3x + ( 36 + 6) = 180

3x + 42 = 180

now use inverse operations

3x + 42 = 180

     -42     -42

3x = 138

/3      /3

x = 46

its a geo match to the ? type thing

Answers

1) 1/2
2) 1/2
3) 2

I can explain if you have time

At a local fitness center members pay an 8$ membership fee and $3 for each aerobics class nonmembers pay $5 for each aerobics class for what number of aerobics classes will the cost for members and nonmembers be the same

Answers

Answer:

4 aerobics classes

Step-by-step explanation:

8 + 3x = 5x

8 = 2x

4 = x

If the point (6, 9) is on the graph of an even function, what other point must also be on the graph?

Answers

Answer:

b/c it's an even function you know that  f(x) = f(-x) too  so whether you put in a positive X or a negative X you get the same answer  so you know.. that (-6,9) is also on the graph of this function

Step-by-step explanation:

Given that the function is even and we know that (6, 9) is on its graph, we know that (-6, 9) must also be on the graph.

Even functions:

A function f(x) is even if:

f(x) = f(-x)

Now, we know that the point (6, 9) is on the graph of our function, this means that:

f(6) = 9

And because our function is even, we must have:

f(6) = f(-6) = 9

Then the point (-6, 9) must also be on the graph of the function.

If you want to learn more about even functions, you can read:

https://brainly.com/question/5719984

2/7x + 1/5x = 34 x= what?

Answers

Answer:

70

Step-by-step explanation:

[tex]\frac{2}{7}x +\frac{1}{5}x=34[/tex]

We need to combine like terms but since they are fractions we first need to find a common denominator. The common multiple of 5 and 7 is 35 so we need to multiply 7 by 5 and 5 by 7, but we have to do the same to the numerator too.

[tex]\frac{2*5}{7*5} +\frac{1*7}{5*7}[/tex]

[tex]\frac{10}{35}x+\frac{7}{35} x=34[/tex]

Combine like terms

[tex]\frac{17}{35}x=34[/tex]

Divide 34 by [tex]\frac{17}{35}[/tex]

[tex]\frac{34}{1} *\frac{35}{17} =\frac{1190}{17} =70[/tex]

HELP ME PLS THIS IS URGENT ASAP PLS HELP ILL BRAINLISTTT​

Answers

Answer:

1.) h • g4 • h = 4g•2h

2.) c • 4 • a •b = ab•4c

3.) (40)/(11•a)= (a•11)/40

4.) (20)/(4•x)= (x•4)/20

Step-by-step explanation:

Think of it as adding and flipping :)

7y + 2x − 10y + 3x^2 − 10x.

Answers

Answer:

67

Step-by-step explanation:

Answer:

3x² - 8x - 3y

The product of Greg's height and 5 is 90

Answers

Answer:

450

Step-by-step explanation:

is the answer

Yumiko has a rectangular-shaped patio. She wants to double the area of the patio by increasing the length and the width by the same amount.
The length is 14 and the width is 10.

a. Write a function, in factored form, to calculate the number of feet Yumiko would need to add to the length and width.

b. What are the dimensions of the patio, rounded to the nearest hundredth feet?

I am not very good with completing the square and would like to understand it better. Any help would be very appreciated!

Answers

Answer:

For a rectangle of length L and width W, the area is:

A = L*W

In this case, we start with:

L = 14ft

W = 10ft

Then the initial area is:

A = 14ft*10ft = 140ft^2

a) Now she wants to increase the same amount in each measure, then the new measures will be:

L = 14ft + x

W = 10ft + x

Now we want this new area to be twice the one that we got before, then the equation will be:

(14ft + x)*(10ft + x) = 2*140ft^2 = 280ft^2.

b) Let's solve the equation:

(14ft + x)*(10ft + x) = 280ft^2

First lets distribute the multiplication:

140ft + x*10ft + 14ft*x + x^2 = 280ft

Now let's group terms with the same power of x.

x^2 + (10ft + 14ft)*x + 140ft - 280ft = 0.

x^2 + 24ft*x  - 140ft = 0.

Now we need to solve this quadratic equation, here we must use the Bhaskara equation for quadratic equations, and we will get two solutions for x.

[tex]x = \frac{-24ft +- \sqrt{(24ft)^2 - 4*140ft*1} }{2*1} = \frac{-24ft +- 33.7ft}{2}[/tex]

Then the two solutions are:

x = (-24ft - 33.7ft)/2 = -28.9 ft

This solution is negative, so it does not make sense and we can discard it.

x = (-24ft + 33.7ft)/2 = 4.85ft

This is positive, so we can use this.

Now we can find the new length and width:

L =  14ft + 4.85ft = 18.85ft

W = 10ft + 4.85ft = 14.85ft

The members of the Math team contributed a total of $9.10 for the party after their practice. Each member contributed the same amount of money in dimes only. How many members are in the team and how much money did everyone contribute? Give all possible answers.

Answers

Answer:

Number of possibilities

1) 91 members that contribute 1 dime each ($0.10)

2) 13 members that contribute 7 dimes each ($0.10 × 7 = $0.70)

3) 70 members that contribute 13 dimes each ($0.10 × 13 = $0.13)

Step-by-step explanation:

A dime = $0.10 in dollars

We are told that:

The total amount contributed = $9.10 for the party after their practice.

Each member contributed the same amount of money in dimes only.

Let the number of members be represented as: x

Number of possibilities

We find the factors of $9.1

= 1, 0.7, 0.13, 9.1

= 1 × 9.1

= 0.7 × 13

= 0.13 × 70

Hence:

1) $0.10 × x = $9.10

x = $9.10/$0.10

x = 91

Therefore, from the calculation above, there are 91 members and each of them contributed the same amount which was 1 dime ($0.10).

2)

7($0.10 )× x = $9.10

x = $9.10/$0.70

x = 13

Therefore, from the calculation above, there are 13 members that contribute 7 dimes each ($0.10 × 7 = $0.70)

3) 13($0.10) × x = $9.10

x = $9.10/$0.13

x = 70

Therefore, from the calculation above, there are 70 members that contribute 13 dimes each ($0.10 × 13 = $0.13)

Can someone please help me?

Answers

Answer:

C

Step-by-step explanation:

4a+10=180

4a=170

a=42.5

42.5*2=85

Answer: C. 85.0 degrees

Step-by-step explanation: First you find a using the equation they gave you. A=42.5. Then you plug it into the measures of the angles. But just by looking at the angles you can tell 2a would be the largest so you just plug a in there and you get your answer!

Translate the algebraic expression below into a written expression.

Answers

Answer:

b is the anwer of youre question

Answer:

B

Step-by-step explanation:

the plus sign means sum so that leaves you with the first two choices already

c has an exponent of two so that would be called squared, and that leaves you with the second one

Need help!!!! Don’t understand how to do this!

Answers

equation in slope intercept form: x= -2x+4

PLEASE ANSWER!! Quadrilateral PQRS is shown on the coordinate plane.

Answers

Answer:

i have no idea

dont spam "please answer" its not cool

PHOTO ADDED
NEED URGENT HELP

Answers

Answer:

A

Step-by-step explanation:

Translate this into an equation.
The product of Greg's height and 5 is 90.
use g to represent Greg's height.

Answers

Answer:

g times 5 equals 90

Step-by-step explanation:

Answer:

g5 = 90

Step-by-step explanation:

if Greg's height is and 5 is the product of 90 that means you have to multiply g and 5 together to equal 90.

1-cos2a/1+cosa if 1/3 how much sin²a

Answers

Answer:

(1-cos2A) /(1+cos2A) =tan²A

Proof:

We know that,

cos(A+B) =cosA.cosB-sinA.sinB

=>cos2A=cos(A+A)

=>cos2A=cosA.cosA - sinA.sinA

=>cos2A=cos²A-sin²A

=>cos2A=(cos²A-sin²A)/(cos²A+sin²A

Since {cos²A+sin²A=1}

Divide the numerator & the denominator by (cos²A) to get,

cos2A = {(cos²A-sin²A) ÷cos²A} / {(cos²A+sin²A) ÷cos²A}

cos2A ={(1-tan²A)/(1+tan²A)}

Then,

1-cos2A = 1-[{(1–tan²A)/(1+tan²A)}]

1-cos2A =(1+tan²A-1+tan²A)/(1+tan²A)

1-cos2A=(2tan²A)/(1+tan²A)

And now.......

1+cos2A=1+[{(1-tan²A)/(1+tan²A)}]

1+cos2A={1+tan²A+1-tan²A}/{1+tan²A}

1+cos2A=2/(1+tan²A)

So now,

(1-cos2A)/(1+cos2A)= {2tan²A/(1+tan²A)}÷{2/(1+tan²A)}

={(2tan²A)(1+tan²A)}÷{2(1+tan²A)}

=tan²A

Step-by-step explanation:

make me as brain liest

slove this for me please​

Answers

Answer:

-10

Step-by-step explanation:

divide both sides by -4

simplify to v+8=-2

subtract 8 from both sides

v=-10

x2 + 6 x+8 = 0
What is the factors

Answers

Answer:

Step-by-step explanation:

0.3 km are in how many miles?

Answers

Answer:

There are 0.186411 miles in 0.3 km.

0.3 km = 0.19 miles hmm

What is the value of A when we rewrite 4^x+3-4^x as A times 4^x

Answers

This looks simple I belive the answer would be 35 because 4^x + 31^x = 35^x

A race is 20 miles long . There is water station every 1 1/4 miles along the race route. How many water stations are needed for this race ?

Answers

Answer:

16

Step-by-step explanation:

just divide 20 by 1  1/4

20 divided by 1 1/4 is 16

What is the slope of the line through (3, 2) and (-3, 4)?
3.4)
(32)
1
2
14
A. -3
O B.
O D. 3

Answers

Answer:

C

Step-by-step explanation:

Calculate the slope m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (3, 2) and (x₂, y₂ ) = (- 3, 4)

m = [tex]\frac{4-2}{-3-3}[/tex] = [tex]\frac{2}{-6}[/tex] = - [tex]\frac{1}{3}[/tex] → C

The slope of the line is -1/3 through the points(3, 2) and (-3, 4) which is correct option (C).

What is slope of line?

Slope of line is defined as the angle of line. It is denoted by m

Slope m = (y₂ - y₁)/(x₂ -x₁ )

Consider two points on a line—Point 1 and Point 2. Point 1 has coordinates (x₁,y₁) and Point 2 has coordinates (x₂, y₂)

What is graph?

A graph can be defined as a pictorial representation or a diagram that represents data or values.

From the given graph we can pick the points which can tell us about the nature of the line that slope of line is negative.

Given,

Points of line is (3, 2) and (-3, 4)

Let

x₁ = 3, y₁ = 2

x₂ = -3, y₂ = 4

∵ Slope m = (y₂ - y₁)/(x₂ -x₁  )

Substitute values in formula

m = (4 - 2)/(-3 - 3)

m = 2/(-6)

m = -1/3

Hence, the slope of the line is -1/3

Learn more about Slope of Line here :

brainly.com/question/14511992

#SPJ5

What is the distance between (8, -3)and (4,−7)?

Answers

Answer:

+4sqrt(2)

Step-by-step explanation:

Note that the horizontal distance is 8 - 4, or 4 (which is the "run") and that the vertical distance is -3 - (-7), or 4 (which is the "rise").  Applying the Pythagorean Theorem, we get:

distance = length of hypotenuse = +sqrt(4^2 + 4^2) = +4sqrt(2)

Solve the proportion 9/x = 18/5

Answers

Answer:

22.5

Step-by-step explanation:

Answer:

2.5

Step-by-step explanation:

Cross multiply:

9 * 5 = x * 18

Simplifying

9 * 5 = x * 18

Multiply 9 * 5

45 = x * 18

Reorder the terms for easier multiplication:

45 = 18x

Solving

45 = 18x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-18x' to each side of the equation.

45 + -18x = 18x + -18x

Combine like terms: 18x + -18x = 0

45 + -18x = 0

Add '-45' to each side of the equation.

45 + -45 + -18x = 0 + -45

Combine like terms: 45 + -45 = 0

0 + -18x = 0 + -45

-18x = 0 + -45

Combine like terms: 0 + -45 = -45

-18x = -45

Divide each side by '-18'.

x = 2.5

Simplifying

x = 2.5

The 2 Johnson children are playing a game. The
game has 10 cards that are passed out. Each child
gets the same number of cards. How many cards
does each child get?

Answers

Answer:

each child gets 5 cards

Step-by-step explanation:

just do 10/2 and you get 5

Answer:

5 cards

Step-by-step explanation:

10 divided by 2 is 5

Other Questions
9.Name a fictional character who could be described as surly. Why would you describe themthis way? Can someone tell me where to graph this Simplify the expression.(x)3 x3 Describe the effect of increasing the number of tablets dissolved in water on the number of new leaves in four weeks. 25 points Describe hydrogen bondingplease help me! :) Due to erratic sales of its sole producta high-capacity battery for laptop computersPEM, Inc., has been experiencing difficulty for some time. The companys contribution format income statement for the most recent month is given below:Sales (13,200 units $40 per unit) $528,000 Variable expenses 316,800 Contribution margin 211,200 Fixed expenses 235,200 Net operating loss $(24,000) 1. Compute the companys CM ratio and its break-even point in both unit sales and dollar sales.2. The president believes that a $6,800 increase in the monthly advertising budget, combined with an intensified effort by the sales staff, will result in an $89,000 increase in monthly sales. If the president is right, what will be the effect on the companys monthly net operating income or loss?3. Refer to the original data. The sales manager is convinced that a 10% reduction in the selling price, combined with an increase of $31,000 in the monthly advertising budget, will double unit sales. What will the new contribution format income statement look like if these changes are adopted?4. Refer to the original data. The Marketing Department thinks that a fancy new package for the laptop computer battery would help sales. The new package would increase packaging costs by $0.60 cents per unit. Assuming no other changes, how many units would have to be sold each month to earn a profit of $4,100?5. Refer to the original data. By automating, the company could reduce variable expenses by $3 per unit. However, fixed expenses would increase by $55,000 each month.A. Compute the new CM ratio and the new break-even point in both unit sales and dollar sales.CM ratio 45%Break-even points in units 183Break-even points in dollars 7,305B. Assume that the company expects to sell 20,700 units next month. Prepare two contribution format income statements, one assuming that operations are not automated and one assuming that they are.C. Would you recommend that the company automate its operations?1. Yes2. No 8. Find the perimeter of ABC with vertices A(-8, -3), B(-2, -3), and C(-8,5). What the word please. Identify the vocabulary word that matches the picture. Terminating vs. RepeatingSome rational number, such as 1/2, 3/8, and 2/5 have a finitedecimal (terminating decimal); while others, such as 1/3, haveinfinite decimal representation (repeating decimal).For which positive whole numbers, n, is the decimalrepresentation of 1/n finite? For which is it infinite? Describethe pattern, if there is one. Plz Help, i really dont understand this, and I'm taking a timed test!Solve for x: 3|x + 7| = 12 (2 points)A. x = 5 over 3 , x = 19 over 3B. x = 3, x = 11C. x = 3, x = 11 Describe an organism that might live in an extreme environment such as inside a volcano, deep in the ocean, or in an icy cave. If DEF ~= PQR, which congruences are true by CPCTC? Select all that apply.a. DF = PRb. DE = PRC. EF = QRD. Q = DE. E = QF. F= R Is f^-1(x) = x/9 - 5/9 a function? Who was the long time rival of France, especially during the napoleonic wars? a.Which of the following is an example of how interpersonal relationships develop a new language and thus create anew culture?a businessman greeting his new clientb. a married couple using endearments with each otherc. a child waving good bye to her motherd a football team meeting over their strategy for Saturday's gamePlease select the best answer from the choices providedOD y = bx(x - a)(x-a)(x + b)(x - b)In the equation above, a and b are positiveconstants and a b. How many distinct x-interceptsdoes the graph of the equation in the xy-plane have? can someone help me on this question pretty please Given mGHF = 34, mHJF = 124, and mFKJ = 79. Which of the following is an example of how enzymes are catalyst?A. Enzymes can alter the free energy change (G) for a chemical reaction.B. Enzymes increase the free energy of the reactants to make the reaction go faster.C. Enzymes provide the activation energy for the reactions they facilitate.D. Enzymes lower the activation energy so that reactants absorb enough energy to reach transition state. On July 1, 2020, Culver Inc. made two sales. 1. It sold land having a fair value of $902,220 in exchange for a 4-year zero-interest-bearing promissory note in the face amount of $1,419,656. The land is carried on Culver's books at a cost of $590,900. 2. It rendered services in exchange for a 3%, 8-year promissory note having a face value of $402,150 (interest payable annually). Culver Inc. recently had to pay 8% interest for money that it borrowed from British National Bank. The customers in these two transactions have credit ratings that require them to borrow money at 12% interest.Record the two journal entries that should be recorded by Sunland Inc. for the sales transactions above that took place on July 1, 2020. (Round present value factor calculations to 5 decimal places, e.g. 1.25124 and final answers to 0 decimal places, e.g. 5,275. If no entry is required, select "No Entry" for the account titles and enter o for the amounts. Credit account titles are automatically indented when the amount is entered. Do not indent manually.) No. Date Account Titles and Explanation Debit Credit 1. July 1, 2020 2. July 1, 2020