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3 years ago

I’m stumped on this I’m not good at math neither I have 30min left

Mathematics

1 answer:

Nana76 [90]3 years ago

3 0

Answer:

I don't know this but please ask the tutors on brainly hope this helps!!!

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3.2(2.9 + 2.9r) what is the Answer please tell me the True Answer

raketka [301]

$Hiya!$

Here's a explanation!

$3.2(2.9+2.9)= 9.28$

$3.2(9.28+2.9) = 12.18$

$r = 12.18$

Hopefully, this helps you!!

$Sokka$

4 0

3 years ago

What percent of 90 is 36

levacccp [35]

The percentage of 90 is 36 is 250%

4 0

3 years ago

(worth 10 points) 2x + 5 = 7x - 15

Karolina [17]

Answer:

The solution for the equation is $x = 4$ .

Step-by-step explanation:

-Solve the equation:

$2x +5=7x -15$

-Subtract 7x from 2x:

$2x +5 -7x=7x -7x -15$

$-5x + 5=-15$

-Subtract both sides by 5:

$2x + 5 - 5 = -15 -5$

$-5x = -20$

-Divide both sides by -5:

$\frac{-5x}{-5} = \frac{-20}{-5}$

$x = 4$

So, the answer is $x = 4$ .

6 0

4 years ago

Read 2 more answers

Rufus eats 1/4 cup of dog food three times a day. How many cups of food does he eat in 7 days?

kumpel [21]

For one day he eats 3/4 cup of doog foods. For 7 days he eats 5 cup and 1/4 cup of food.

1/4×3=(1×3)/4=3/4
3/4×7=(3×7)/4=21/4
21/4=5 1/4.

6 0

4 years ago

Read 2 more answers

How do you work out this equation

Gnom [1K]

Answer:

x is equal to negative one, and y is equal to negative four.

Step-by-step explanation:

You can do this by solving one of the equations by either x or y, then substituting it into the other. Let's solve the second one for y:

$2y = 3x - 5\\y = \frac{3x - 5}{2}$

Now we'll substitute that into the first equation:

$9x - 2y = -1\\9x - 2(\frac{3x - 5}{2}) = -1\\9x - 3x + 5 = -1\\6x + 5 = -1\\6x = -6\\x = -1$

So we now know that x is equal to -1. We can simply substitute that into one of the original equations to find y:

$2y = 3x - 5\\2y = 3(-1) - 5\\2y = -3 - 5\\2y = -8\\y = -4$

We now know that x is equal to -1, and y is equal to -4. We can also check our answer by plugging that -4 into the other equation, and see if we still get -1:

$9x - 2y = -1\\9x - 2(-4) = -1\\9x + 8 = -1\\9x = -1 - 8\\9x = -9\\x = -1$

So we know that our answer is correct.

3 0

3 years ago