3 years ago

Please answer this correctly without making mistakes

Mathematics

1 answer:

Monica [59]3 years ago

5 0

Answer:

The first one

Step-by-step explanation:

I hope this is right!

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Based on a sample survey, a principal claims that 7 out of 10 students like math. If there are 1300 students, how many would you

horsena [70]

Answer:

390

Step-by-step explanation:

find the fraction of those that don't like math

10/10 - 7/10= 3/10

then do 3/10 x 1300 to get 390

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3 years ago

What is the inverse of the function f(x) = one-ninthx 2?

JulijaS [17]

The inverse of the function $y=\frac{1}{9}x^2$ is $\sqrt{9x}$

Given the function $f(x) = \frac{1}9} x^2$

We are to find its inverse

Step 1: Ley y = f(x)

$y=\frac{1}{9}x^2$

Step 2: Replace y with x

$x = \frac{1}{9}y^2 \\x = \frac{y^2}{9}$

Step 3: Make y the subject of the formula

$9x = y^2\\y^2 = 9x\\$

Step 4: Take the square root of both sides

$(\sqrt{y})^2 = \sqrt{9x}\\y = \sqrt{9x}\\\\h(x) = \sqrt{9x}\\$

This shows that the inverse of the function $y=\frac{1}{9}x^2$ is $\sqrt{9x}$

Learn more here: brainly.com/question/8691744

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3 years ago

an electrician charges a fee of 80$to make a call he also charges 50$per hour f labor write an equation that you could use to fi

Scrat [10]

Answer:

80+50f

Step-by-step explanation:

f= hours of labor. Your equation should be 80+50f

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4 years ago

Jessica I have sent u letter in email did u read it?

Nataliya [291]

Answer:

hhehehehe

Step-by-step explanation:

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3 years ago

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In two or more sentences, explain how to solve the cube root equation, 3√x−1+2=0

jolli1 [7]

Answer: PEMDAS

Step-by-step explanation: You wanna add 1 to both sides and get 3√x = 1. Then you wanna multiply 3 by 3√x which leaves you with x cause it canceled out. But remember to multiply 3 on both sides so x = 1 sq rt 3. Which is just 1.

x = 1

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3 years ago