Mathematics High School

30 - 19r + 15 - 9r =
25 points!

Answers

Answer 1

Answer:

45-28r

Step-by-step explanation:

30+15-19r-9r

45-19r-9r

45-28r

I hope this is right! Hope this helps!

Answer 2

Answer:

[tex]45-28r[/tex]

Step-by-step explanation:

Combine like terms

[tex]30-19r+15-9r = 30+15-19r-9r=45-28r[/tex]

Related Questions

You deposit $900 in a savings account that earns a simple interest rate of 4.5% per year. You calculate you will earn $1215 in interest over 3 years. Is your answer reasonable?

A. Yes; the interest will be much less than the total in the account

B. No; the interest will be much less than the total in the account.

C. No; the interest will be more than the total in the account.

D. Yes; the interest will be more than the total in the account.

Answers

Answer:

a..

Step-by-step explanation:

yes the interest  will be much less than total than the account

The answer is not reasonable because the interest will be much less than the total in the account.

In order to determine if the answer is reasonable, we have to determine the simple interest that would be earned and the total amount in the account.

Simple interest = amount deposited x time x interest rate

$900 x 0.045 x 3 = $121.50

The total amount in the account in three years = amount deposited + interest earned

$900 + $121.50 = $1021.50.

To learn more about simple interest, please check: brainly.com/question/9352088?referrer=searchResults

a number multiplied by 5 and increased by 7 the result is 62

Answers

Answer:11

Step-by-step explanation: subtract 7 from 62, which give you 55, divide by 5 which gives you 11.

Answer:

Step-by-step explanation:

5X+7=62

5X=55

X=11

 

what is 19 percent in decimal?​

Answers

Answer:

0.19

Step-by-step explanation:

Answer:

0.19

Step-by-step explanation:

divide 19 by 100 (do this because percent basically means "per 100". anything you want to convert into a decimal is going to be out of 100, so you always divide by 100 when converting percent to decimal.

you will end up with 0.19

hope this helps you :)

How do you write 8.43 × 10^-4 in standard form?

Answers

Answer:

0.000843

Step-by-step explanation:

simplify the expression:

8.43 × 0.0001

now simplify:

0.000843

If you find my answer helpful

Pls consider marking my answer as Brainliest! It would mean a lot!

-(x-7) + (5/3) = 2(x+9) wht does x equal

Answers

Answer:

-28/3=x

Step-by-step explanation:

-(x-7) + (5/3) = 2(x+9)

-x+7+5/3=2x+18

7+5/3=2x+18-x

7+5/3=x+18

5/3=x+18-7

5/3=x+11

5/3-11=x

Ahora todo se pasa a base 3

[tex]\frac{5-33}{3}[/tex]=x

-28/3=x

What was the error in this equation?

Answers

Answer:

The error is the solution.

The solution is all real numbers, or infinite amount of solutions.

Step-by-step explanation:

Step 1: Write equation

-4(2n - 3) = 12 - 8n

Step 2: Solve for n

Distribute -4: -8n + 12 = 12 - 8nSubtract 12 on both sides: -8n = -8nAdd 8n to both sides: 0 = 0

Here we see that n can equal any number. If you plug in any number n, it will render the equation true. Therefore, our solution is n = infinite amount of solutions.

n = 0 is only slightly correct. 0 does work as the solution, but there are solutions as well.

This recipe makes 5 portions of fajitas.
Carly has 700 g of chicken, 800 g of peppers, 200 g of onion, 70 g of spice mix and 16 tortillas.
How much more of each ingredient will she need to make 15 portions by following this recipe?
Recipe: Serves 5
400 g chicken
600 g peppers
70 g onion
20 g spice mix
10 tortillas
PLS HELP ME I NEED IT BAD!!!!!!!!!!!!

Answers

Answer:

Chicken: 500g

Peppers: 1kg

Onions: 10g

Tortillas: 14

Step-by-step explanation:

hope this helps

WHAT IS FUN ABOUT MATH

Answers

Answer:

Maths is universally common. People in every country use maths and all its branches. ... Give it a try, look around you, measure something, solve a sum, count something and there are so many more ways you can start knowing maths. Maths is interesting, it's just numbers to play with.

Answer:

what's fun about math is when you figure out the equations and questions.

Which property was used to simplify the expression?

mc005-1
distributive property
commutative property
associative property
inverse property

Answers

Answer: C is your asnwer

Step-by-step explanation:

Answer:

it is c

Step-by-step explanation:

If the number of gallons of gas is known, can you find the number of miles driven?
Explain how this value could be calculated.

PLEASE SOMEONE HELP ME!!!!!!

Answers

Answer:

It cant

Step-by-step explanation:

car use gas at differnt rates

It can’t
Cars use gas at different rates

Math help please I have no idea how to solve this it’s confusing me I searched a video and I’m still confused :(

Answers

Answer:

57°

Step-by-step explanation:

A triangle's angles should all add up to 180°

So you have to add up the other two given angles, so in this case it is 60° + 63°, which equals 123°. Then you subtract 123 ° from 180°, giving you the answer of 57°.

Answer:

it's 57

Step-by-step explanation:

the 3 angles add up to 180 so add the 2 angles together to get 123 and then subtract that from 180

What’s is the answer to 9^11 divided by 9

Answers

well you would type in 9^11 on your calc, then divide the ans by 9 resulting in

3486784401

Answer: 3,486,784,401

Step-by-step explanation:

9 raised to the 11th power is 31,381,059,609

Then divide that by 9 to get 3,486,784,401

A new car is purchased for 24800 dollars. The value of the car depreciates at 7.25% per year. To the nearest tenth of a year, how long will it be until the value of the car is 9000 dollars?

Answers

Answer:

pretty sure the answer is 13.5 years. sorry if wrong

Step-by-step explanation:

it’ll take 13.5 years for the car value to be $9000

find the value of the height of the tree.

Answers

Answer:

20 ft

Step-by-step explanation:

First we must find out what the scale factor is.

26 / 6.5 = 4

the scale factor is 4.

Now we must multiply 5 by 4 to find x.

5 * 4 = x

20 = x

x = 20

The height of the tree is 20 ft.

A block with a mass of 10 kg is being pushed. its acceleration is 5 m/s.s . Calculate the force acting on the block ? plz answer for good luck

Answers

Answer:

The answer is 50 N

Step-by-step explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question

mass = 10 kg

acceleration = 5 m/s²

We have

force = 10 × 5

We have the final answer as

50 N

Hope this helps you

Can you guys help please!! Due very soon!

Answers

the y-intercept is at (0,2) where it's touching the y-axis. That's why it's called y-intercept.

Hope thishelps!

The y intercept is (0,2) because that’s where the line intercepts the y axis

I NEED HRLP PLEASE!

HOMECOMING CONCERT: Kaiwan sold 40 tickets for Young Baby Durk NBA for the Howard Homecoming concert. He sold general admission tickets for twenty dollars each and VIP tickets for thirty dollars each. He collected eight hundred and eighty dollars. How many of each kind of ticket did Kaiwan sell? Write a system of equation using g for general admission and v for VIP tickets. Provide evidence of how your got your answer to prove that your answer is correct by writing your final answer in a complete sentence.

Answers

Answer:

he sold 32 general admission tickets

and 8 vip tickets

Which equation represents the line that is parallel to 5x +y = 13 and passes through the point (15,-31)? ​ Show complete working format please

Answers

Answer:

Step-by-step explanation:

y = -5x + 13

y + 31 = -5(x - 15)

y + 31 = -5x + 75

y = -5x + 44

x 2 +2x−8=
The answer is (x-2) (x+4)

Answers

Answer:

x3 - 2x2 - 4x - 10

 

         x      

Step-by-step explanation:

i think

Professor Burger orders flowers to be delivered to his mother. The flowers cost $59.95, not including tax. A bouquet of flowers is shown. Its price tag reads fifty-nine dollars and ninety-five cents. If there is a 6% sales tax, what is the total cost of the flowers to the nearest cent? Enter the correct answer in the box.

Answers

Answer:$60.30

Step-by-step explanation:

First, you need to find what 6% of 59.95 is. To do this, multiply 59.95 x 0.06. This gives you 3.597.
Add together 59.95 and 3.597. This gives you 63.547.
The directions say to round to the nearest cent, so round up to $63.55.

Hope this helps!

2m=-6n-5

Solve for M

Answers

Hey :)


m= -3n -5/2

The equation is in standard form
2m = −6n −5


Divide both sides by 2
2m/2 = -6n-5/2
​

Dividing by 2 undoes the multiplication by 2
m= -6n -5/ 2
​

Divide −6n−5 by 2
m= -3n -5/2

Hope this helps :)

m= -3n -5/2

What is mathematical equation?

Equation is defined as the state of being equal and is often shown as a math expression with equal values on either side, or refers to a problem where many things need to be taken into account. An example of an equation is 2+2 = 3+1.

In the given equation,

2m = −6n −5

Divide by 2 on both sides, we get

2m/2 = −6n/2 −5/2

m = -3n - 5/2

Therefore, our value of m is in terms of n, which is -3n - 5/2

Read more about mathematical equation here:

https://brainly.in/question/14933717

#SPJ2

What is the average speed in miles per hour of a car that travels 961.95 miles in 15.9 hours.

Answers

Answer:

60.5 miles per hour

Step-by-step explanation:

Take the miles driven and divide by the hours

961.95 miles/15.9hours

60.5 miles per hour

Answer:

60.5 miles per hour

Step-by-step explanation:

961.95 divided by 15.9 should give you your answer which is 60.5

An art gallery owner purchases art at flea markets and sells the art for a 14% profit in the gallery. If the owner purchases a piece of art for $885 at a flea market, what will be its selling price in the gallery?

Answers

Answer:

$1008.9

Step-by-step explanation:

Given

Cost of piece of art = $885

Percent profit made = 14%

Profit amount = 14% of $885

Profit amount = 14/100×885

Profit amount = 12390/100

Profit amounts to $123.90

Selling price = cost price + profit amount

Selling price = $885+$123.90

Selling price = $1008.9

Hence the selling price for the art at the gallery is $1008.9

Answer:

$1008.9

Step-by-step explanation:

In the image above, what do the red arrows on lines mean?

Answers

Answer: ............................Step-by-step explanation:You need to attach an image

A grocery store sells a bag of 6 oranges for $3.30. What is the unit cost?

Answers

Answer:19.8$

Step-by-step explanation:

y=3x-5 identify y intercept within equation

Answers

Answer: -5

Step-by-step explanation: alrite so when u graph it, the line crosses -5 on the y axis

Answer: -5

Step-by-step explanation:

When written in slope intercept form, which is y=Mx+b, b is the y intercept so in this case it would be -5

Translate the equation into a verbal sentence 3y+8=32

Answers

Answer:

32 Is Eight More Than 3 Times A Number

Explanation:

32 Is Eight More Than: + 8 = 32

3 Times A Number: 3y

Put Everything Together: 3y + 8 = 32

Step-by-step explanation:

Hey there!

3y+8 = 32 --> The sum of thrice of a number and 8 is 32.

Reason:

When solving this word problem, we let "x" as variable as there is unknown number.After that as in word problem it says "thrice a number" it gives 3x.Then as there is "the sum of the unknown number and 8" it means 3x+8.Lastly the sum would be equal to 3x+8=32.

So, the word problem for this equation is " The sum of thrice of a number and 8 is 32.

Hope it helps...

Solve for x number 9​

Answers

Answer:a

Step-by-step explanation:

Answer: B

Solving Steps:

Q5.
Here are two fractions.
7/5 and 5/7

Work out which of the fractions is closer to 1
You must show all your working.​

Answers

Answer:

5/7

Step-by-step explanation:

You can convert them to fractions to answer:

7/5=1.4

5/7=0.714

7/5 is 0.4 away from 1, while 5/7 is 0.3 away.

Answer:

5/7 is closer

Step-by-step explanation:

7/5= 49/35=1 14/35

5/7= 25/35

7/5 is 14/35 away from one whereas 5/7 is 10/35 away.

−38÷7/12 another math question.

Answers

Answer:

-0.45238095238

Step-by-step explanation:

-38 divided by 7/12= -0.45238095238

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