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3 years ago

What’s the answer helpppp

Mathematics

1 answer:

grandymaker [24]3 years ago

7 0

Answer:

The answer is last one

Step-by-step explanation:

Because the -5 would get distributed to 2 and 6 inside the parenthesis.

the photo at the top is an example on how the exponents will get distributed and multiplied.

P.S. mb if its incorrect but hope this helps :)

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Help! 10 Points not 5!

KATRIN_1 [288]

9514 1404 393

Answer:

Step-by-step explanation:

Solve the first for a, then substitute into the second.

a = 27/(5b^2)

Then ...

(27/(5b^2))^2·b = 135

27^2/(5^2·135) = b^3 = 27/125

b = ∛(27/125) = 3/5

a = 27/(5(3/5)^2) = 15

The expression of interest is ...

a +5b = 15 + 5(3/5) = 15 +3

a +5b = 18

6 0

3 years ago

Pls help It’s due tomorrow question is in the picture

Slav-nsk [51]

Answer:

Step-by-step explanation:

Let's find the area of each of the two circles.

First Circle:

The first circle has a diameter of 10 inches. That means the radius is 5 inches. So, its area is:

$A=\pi r^2\\A=\pi (5)^2\\A=25\pi$

Second Circle:

The second circle has a diameter twice that of the first. So, the diameter is 20 inches. This means that the radius is 10 inches. Find the area:

$A=\pi r^2\\A=\pi (10)^2\\A=100\pi$

Now, find the ratio between them by dividing:

$\frac{\text{Smaller}}{\text{Larger}}=\frac{25\pi}{100\pi}$

Simplify:

$\frac{\text{Smaller}}{\text{Larger}}=\frac{1}{4}$

1/4 is the same as 1:4

So, our answer is C :)

5 0

4 years ago

Kelly needs to order lunch for orders 6 people at a business meeting. Her menu choices are chicken salad for a cost of $5 per pe

nirvana33 [79]

Ok , with that information we can write the equations
x + y = 6
5x + 4y = 28

Where x = how many people ordered chicken
and y = how many people ordered egg salad

Through elimination , we can set one of the variables in both equations equal so we can eliminate it :

(4)x + (4)y = (4)6
5x + 4y = 28

4x + 4y = 24. equation 1
5x + 4y = 28. equation 2

Now we can subtract the second equation by the first equation and isolate one variable:
equation 2 - equation 1

5x - 4x + 4y - 4y = 28 - 24

x = 4

Now that we discovered our x value ( How many people ordered chicken salad ) , we can apply it to one of the equations and discover y ( how many people ordered egg salad)

x + y = 6
x= 4
4 + y = 6

We can shift 4 to the other side of the equation by subtracting 4 from both sides of the equation:
4 - 4 + y = 6 - 4
y = 2

x=4 and y=2

So the awnser is :
4 people ordered chicken salad and 2 people ordered egg salad!

I hope you understood my brief explanation!!

p.s if you want to know how to use another method to solve these problems ( Substition) , just let me know in a comentary down here

5 0

3 years ago

What is the simplified form of 5x-9x

Nezavi [6.7K]

Answer:

-4x

Step-by-step explanation:

5x - 9x

Factor out x

x( 5-9)

x ( -4)

-4x

3 0

3 years ago

Jessica's piggy bank has a total of $13.25 in dollar bills and quarters. If there are a total of 29 dollar

Licemer1 [7]

Answer: $8 21 quarters

Step-by-step explanation:

20 quarters is $5 plus another is $5.25

8 dollars is $8 plus the $5.25 = $13.25

Have a nice day, and if you could be so kind as to give me a brainliest

3 0

3 years ago