Which expression is equal to 3x? (1 point)

x + 3
x + x + x
x + x2
2x + 1

Answer: x = -5 -z/y or x= -5/y - z/y

Step-by-step explanation:

-5 = xy + z -- then you need to isolate the x, so subtract z from both sides

-5-z = xy -- then divide both sides by y

x= -5-z/y

Answer:

B

Step-by-step explanation:

½=20*x

x=½*1/20

x=1/40

Answer:

4

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

Answer:

1. no

no because 2:3 is not equal to 3:22.50

2. Yes

the constant proportionality is 3=4.35

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

You can plug in the x and y coordinates of the points to check which one is right.

The easiest point to start with is (0, 6).

[tex]A) 6=6*1.5^0\\B) 6=0.67^0\\C) 6=4*1.5^0\\D) 6=6*0.67^0[/tex]

Any number raised to the power of 0 is 1, so we can replace all of the exponents with 1.

[tex]A) 6=6\\B) 6=1\\C) 6=4\\D) 6=6[/tex]

That means we can immediately rule out B and C, since 6 clearly does not equal 1 or 4.

But since we still don't have our answer, we can plug in another point. Once again, you want to start with low, easy numbers, so let's plug in (1, 9).

[tex]A) 9=6*1.5^1\\D) 9=6*0.67^1[/tex]

Any number raised to the power of 1 is the same number:

[tex]A) 9=6*1.5\\D) 9=6*0.67[/tex]

Now we can multiply out both sides:

[tex]A) 9=9\\D)9=4[/tex]

Once again, it becomes immediately clear that D does not work, and A is therefore the correct equation.

Step-by-step explanation:

part1

the mean value is

(87+100+94+79+92+100+95+83+89+99+100+91+89+95+100+93+96+83) / 18

= 1665 / 18 = 92.5

part2

this is the sum of the absolute value of the differences bergen the individual sites and the mean value divided by the number of data points :

(5.5+7.5+1.5+13.5+0.5+7.5+2.5+9.5+3.5+6.5+7.5+1.5+3.5+2.5+7.5+0.5+3.5+9.5)/18

= 94/18 = 5.222222222... ≈ 5.2

part3

how many scores are less than 5.2 away (plus or minus) from the mean value ? in other words, how many differences in the part2 calculation were smaller than or equal to 5.2 ?

there are 9 scores meeting that criteria :

94, 92, 95, 89, 91, 89, 95, 93, 96

Answer:

$138

Step-by-step explanation:

120x1.15=$138

Answer:

c

Step-by-step explanation:

first i did tried all of the percents and found that c is correct

Answer:

Step-by-step explanation:

Let say the following:

p = number of points

We know that they scored the same number of points in Game 1 and Game 2.

But in Game 3, they scored 6 points less than Game 1 and Game 2.

Therefore,

Game 1 = p

Game 2 = p

Game 3 =  p - 6

To find the average you use the following formula:

Number of points / number of games = average

Basically,

(Game 1 + Game 2 + Game 3 ) / 3 = 63

So substitute the equations we made earlier and you get:

[tex]\frac{Game 1 + Game 2 + Game 3}{3} = 63\\\frac{p + p + (p - 6)}{3} = 63[/tex]

After this you just want to solve for "p"

Multiply both sides by 3 to get rid of the fraction:

p + p + (p - 6) = 63 x 3 = 189

3p - 6 = 189

Add 6 to both sides.

3p = 189 + 6 = 195

Divide both sides by 3

p = 195/3 = 65

So now we know p = 65 points. Substitute this back into our equations for each game:

Game 1 = p  , Game 1 = 65 points

Game 2 = p , Game 2 = 65 points

Game 3 = p - 6 , Game 3 = 65 - 6 = 59 points

Answer:

You can tell if a table is linear by looking at how X and Y change. If, as X increases by 1, Y increases by a constant rate, then a table is linear.

An equation is considered linear, if it is in the form of. y = mx + b. where m is the slope of the equation, and b is the y-intercept.

First of all the shape of the graph is a straight line. Every linear graph is nothing more than a straight line so if there is any curves in it, it's not linear. The other way to tell is look at its equation.

Step-by-step explanation:

Complete question:

At the beginning of the day the stock market goes down 30 3/4 points and stays at this level for most of the day. At the end of the day the stock market  goes up 100 1/2 points from the low at the beginning of the day. What is the total change in the stock market from the beginning of the day to the end of the​ day?

Answer:

The total change in the stock market is [tex]69\frac{3}{4}[/tex]

Step-by-step explanation:

Given;

the stock market at the beginning of the day =  30 3/4 points

the stock market at the end of the day = 100 1/2 points

The total change in the stock market from the beginning of the day to the end of the​ day is given by;

100 1/2 points - 30 3/4 points

[tex]= (100 -30) + (\frac{1}{2} -\frac{3}{4} )\\\\= 70 + (-\frac{1}{4} )\\\\= 70 - \frac{1}{4}\\\\= 69\frac{3}{4}[/tex]

Therefore, the total change in the stock market is [tex]69\frac{3}{4}[/tex]

In January, a store sold 3 scarves for $14.10.

so 1 scarf = 14,10 : 3 = $4,7

In March, it sold 5 scarves for $22.90.

so 1 scarf = 22.90 : 5 = $4.58

In which month did a scarf cost the least?

in march

The amount of wrapping paper he use is 62.4 square inches

The formula for calculating the total surface area is expressed as:

Area = 4(area of triangle)

Find the area of the triangle

A = 0.5(6)(5.2)

A =3(5.2)

A = 15.6 square inches

TSA = 4(15.6)
TSA = 62.4 square inches

Hence the amount of wrapping paper he uses is 62.4 square inches

Learn more on total surface area here: https://brainly.com/question/1297098

Answer:

49n^2-70n+25

Step-by-step explanation:

(7n-5)(7n-5)

FOIL it: 49n^2-35n-35n+25

combine like terms: 49n^2-70n+25

Answer:

Since they are supplementary angles which add up to 180 degrees the measure of ZA must be 157 degrees.

Step-by-step explanation:

The sequence 38, 44, 50,.... is an arithmetic sequence

The explicit rule of the sequence is an = 32 + 6n

The sequence 38, 44, 50,.... is an arithmetic sequence with the following parameters:

First term, a1 = 38

Common difference, d = 6

The explicit rule is calculated as:

an = a1 + (n - 1) * d

This gives

an = 38 + (n - 1) * 6

Evaluate the product

an = 38 - 6 + 6n

This gives

an = 32 + 6n

Hence, the explicit rule of the sequence is an = 32 + 6n'

Read more about arithmetic sequence at:

https://brainly.com/question/6561461

Step-by-step explanation:

A-a

A=3.14x10x10

=314m^2

a=3.14x8.5x8.5

=226.865m^2

=314-226.865

=87.135m^2

Answer:

37°

Step-by-step explanation:

angles in a triangle add up to 180 degrees.

if two sides have the same length, an isosceles triangle is formed. the angles corresponding to the sides that have the same length are the same therefore, as FH = HG, ∠HFG = ∠FGH

180° = ∠HFG + ∠FGH + ∠FHG

= 106° + ∠HFG + ∠HFG

= 106° + 2* ∠HFG

subtract 106 from both sides to isolate the unknown and its coefficient

74° = 2*∠HFG

divide both sides by 2 to isolate the unknown

37° = ∠HFG = ∠FHG = w

Answer:

2

Step-by-step explanation:

The last number is 2

You calculate this by the only way the mean can be 4 is if the 3 numbers= up to 12. so 9 + 1=10 and if were looking for 12 we need 2 more so 2.

10 + 2=12

When dealing with mean you calculate the sum of all the number(check) then divided by the total of numbers so 3

12 divided by 3=4 and 4= your mean

Hope it helps have a great day:)

The worth of the comic in 15 years is $784.41.

If the value of the comic is increasing it means it is appreciating in value. As a result of the appreciation, the price of the comic increases with the passage of time.

FV = P (1 + r)^n

$360 x (1.05)^15 = $784.41

To learn more about future value, please check: https://brainly.com/question/18760477

Answer:

The final answer is 748.41

Step-by-step explanation:

Answer:

1. [tex]-tan (x)[/tex]

2[tex]-san(x)[/tex]

3. [tex]cos (x)[/tex]

4. [tex]tan (\pi +3)[/tex]

Step-by-step explanation: May God bless you and your family during spring break

Answer:

Rm243

Step-by-step explanation:

Rm4500 × 0.018 × 3

=Rm243

Please mark as brainliest;)

Answer:

243

Step-by-step explanation:

(4500*1.8*3)/100

=243

Answer:D

Step-by-step explanation: times the 10 by the amount of hours they did on saturday which is $50. Subtract $50 from the $80 the total and the answer is $30, divide 30 by 10 and thats 3 the amount of hours that they worked on sunday. 10(x+5)=80 x=3 (3+5)=8 10(8)=80

Ratio remains same

[tex]\\ \sf\Rrightarrow \dfrac{x}{16}=\dfrac{9}{12}[/tex]

[tex]\\ \sf\Rrightarrow \dfrac{x}{16}=\dfrac{3}{4}[/tex]

[tex]\\ \sf\Rrightarrow 4x=48[/tex]

[tex]\\ \sf\Rrightarrow x=12[/tex]

#2

[tex]\\ \sf\Rrightarrow \dfrac{4}{10}=\dfrac{6}{x}[/tex]

[tex]\\ \sf\Rrightarrow \dfrac{2}{5}=\dfrac{6}{x}[/tex]

[tex]\\ \sf\Rrightarrow 2x=30[/tex]

[tex]\\ \sf\Rrightarrow x=15[/tex]

x=12

[tex]\frac{x}{16}=\frac{9}{12}[/tex]

[tex]x=12[/tex]

See the parsing

[tex](x+6)^2={10}^2+x^2[/tex]

[tex]x^2+12x+36=100+\lambda^2[/tex]

[tex]12x=64[/tex]

[tex]x=\frac{16}{3}[/tex]

{[tex]theorem[/tex]

I hope this helps you

:)

Answer:

The area needed to be painted is approximately 301.44 square inches.

Step-by-step explanation:

The shape of a donut is represented by two concentrical circles, whose area is described by the following formula:

[tex]A =A_{g}-A_{s}[/tex] (Eq. 1)

Where:

[tex]A[/tex] - Total area of the donut, measured in squared inches.

[tex]A_{g}[/tex] - Area of the greater circle, measured in square inches.

[tex]A_{l}[/tex] - Area of the lesser circle, measured in square inches.

By using the definition of the area of the circle, we expand the equation above:

[tex]A = \frac{\pi}{4}\cdot D^{2}_{ext} - A_{s}[/tex] (Eq. 1b)

If we know that [tex]\pi = 3.14[/tex], [tex]D_{ext} = 22\,in[/tex] and [tex]A_{s} = 78.5\,in^{2}[/tex], the area needed to be painted is:

[tex]A = \frac{(3.14)\cdot (22\,in)^{2}}{4}-78.5\,in^{2}[/tex]

[tex]A \approx 301.44\,in^{2}[/tex]

The area needed to be painted is approximately 301.44 square inches.

Answer:

141.3

Step-by-step explanation:

π x 6 (3 + 4.5

Answer: the answer is 56

Step-by-step explanation: its 56 because if you multiply 8 times 5 you get 45 then add 8 to 45 you get 48 now add 8 to 48 you 16 carry the 1 over tje 4 you get 56

Answer:

It is 45.8° because it is a straight line so straight line is 180°.

Answer:

First turn any mixed numbers into improper fractions. 1 3/4 would be 7/4. Becuase you multiply the whole number by the denominator and then add the numerator.

So now you have 7/4 divided by 2/5. Whenever you divide, you flip the 2nd fraction upside down... known as the reciprocal. And after that you multiply the first number by the upside down 2nd number.

So now you have 7/4 X 5/2. When multiplying, just multiply the numerators across and the denominators across. As your answer, you get 35/8 or 4 3/8.

Step-by-step explanation:

Answer:

35/8 or 4 3/8

Step-by-step explanation:

whatever works for you. but when you use a caucalater you get 35/8.

Answer:

same answer as before.

Step-by-step explanation: