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4 years ago

13

Write three numbers that round to 400

1 answer:

Alex777 [14]4 years ago

8 0

395, 390, 398 those are the numbers

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What is the first step in solving the quadratic equation x2 = StartFraction 9 Over 16 EndFraction? Take the square root of both

balu736 [363]

Answer:

The first step is

Take the square root of both sides of the equation

Step-by-step explanation:

we have

$x^{2} =\frac{9}{16}$

Solve for x

step 1

Take square root both sides

$x=(+/-)\frac{3}{4}$

the solutions are

$x=+\frac{3}{4}$ and $x=-\frac{3}{4}$

therefore

The first step is

Take the square root of both sides of the equation

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3 years ago

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Solve the system of equations using the substitution method.

Delicious77 [7]

Answer:

$x = 14$

$y = -3$

Step-by-step explanation:

Given

$2x + 8y =4$

$x = -3y + 5$

Required

Solve

Substitute $x = -3y + 5$ in $2x + 8y =4$

$2(-3y + 5) + 8y =4$

Open bracket

$-6y + 10 + 8y =4$

Collect like terms

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$2y =-6$

Divide both sides by 2

$y = -3$

Substitute $y = -3$ in $x = -3y + 5$

$x = -3 * -3 + 5$

$x = 9+ 5$

$x = 14$

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3 years ago

Dudley is biking. He wants to cover 40 miles. If he travels 30 miles every 2 hours, what is the equation of a line that models y

USPshnik [31]

Answer:

y=40-15x

Step-by-step explanation:

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What is the range of f(x)=1/7(9)^x

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The Rnge of f(x)=1/7(9)^x is 0 to infinty
y|y>0

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Leviafan [203]

12(.07) + 5.23
.84 + 5.23
6.07

12 + 6.07
18.07

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3 years ago