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3 years ago

5

Marissa go a 85 percent on a math quiz she had 36 qetions right how many questions were there

2 answers:

Pachacha [2.7K]3 years ago

8 0

Answer: I think it’s around 31 questions right cause she can get 5 wrong to get 86 i think

Step-by-step explanation:

natali 33 [55]3 years ago

3 0

Answer:

31

Step-by-step explanation:

to get the percentage you divide how many questions you got right by how many questions total, so to figure out how many she got right you would work backwards and multiply 36 by .85 to get your answer

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4n-3=-2n+9 What is the value of the variable 'n'?

julsineya [31]

4n - 3= -2n + 9
add 3n to both sides

4n= -2n +12
add 2n to both sides

6n= 12
divide both sides by 6

n= 2

Check:
4n-3=-2n+9
4(2)-3= -2(2)+9
8-3= -4+9
5=5

Hope this helps! :)

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4 years ago

Write 75kg: 3925mg in its simplest form.

Vilka [71]

Answer:

75.3 kg

Step-by-step explanation:

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3 years ago

Which expression is equivalent to (x27y)^1/3

grin007 [14]

Answer:

$(x^{9}y^\frac{1}{3})$

or

$(x^{9}\sqrt[3]{y})$

Step-by-step explanation:

Given in the question an expression

$(x^{27}y )^\frac{1}{3}$

We will apply the power rule

The "power rule" tells us that to raise a power to a power, just multiply the exponents.

$(x^{27*\frac{1}{3} }y^\frac{1}{3})$

$(x^{9}y^\frac{1}{3})$

As we know that

$x^{1/n} = \sqrt[n]{x}$

so we can write the above expression as

$(x^{9}\sqrt[3]{y})$

8 0

3 years ago

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Screen Shot- Please help- I give Brainliest for correct answer

tiny-mole [99]

Answer:

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Step-by-step explanation:

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3 0

3 years ago

Luisa earns money mowing her neighbors' lawns.

Irina-Kira [14]

Answer:

$p(x)=16x-25$

C is the correct option.

Step-by-step explanation:

We have been given that

$r(x)=20x\\c(x)=4x+25$

The profit is the difference of revenue and cost function.

Mathematically, we can write profit function as

$p(x)=(r-c)x$

We know that $(f-g)(x)=f(x)-g(x)$ . Thus, we have

$p(x)=r(x)-c(x)$

Plugging, the r(x) and c(x) functions

$p(x)=20x-(4x+25)$

Distribute negative over the parenthesis

$p(x)=20x-4x-25$

Combine the like terms. 20x-4x = 16x

$p(x)=16x-25$

C is the correct option.

4 0

3 years ago

Read 2 more answers