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3 years ago

Solve the proportion. 8/7 = n/9

1 answer:

5 0

$\frac{8}{7} = \frac{n}{9}$

Cross multiply the fractions:

$7 \times n = 7n$
$8 \times 9 = 72$

$7n = 72$

Divide both sides by 7 to get n by itself:

$72 \div 7 = 10.28$
$n = 10.28$

The value of n is 10.28.

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Use the table to write a linear function that relates y to x.

blsea [12.9K]

Answer:

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

Step-by-step explanation:

the equation of a linear function in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = (- 8, 2) and (x₂, y₂ ) = (1, - 4) ← 2 ordered pairs from the table

m = $\frac{-4-2}{1-(-8)}$ = $\frac{-6}{1+8}$ = $\frac{-6}{9}$ = - $\frac{2}{3}$

the ordered pair (0, 0 ) indicates the line crosses through the origin, then

c = 0

y = - $\frac{2}{3}$ x + 0 , that is

y = - $\frac{2}{3}$ x ← equation of linear function

4 0

3 years ago

Pls some answer this for me

galben [10]

Answer:

Use pi then round it like the manual says

Step-by-step explanation:

5 0

3 years ago

I need help with this.

Dimas [21]

0.5-2(0)^2
0.5-0
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7 0

3 years ago

Read 2 more answers

Marissa and Callie both have babysitting jobs. Marissa charges $19 plus $1.50 per hour. Callie charges $15 plus $2.75 per hour.

aliya0001 [1]

Answer:

4 hours

Step-by-step explanation:

Write an equation

19 +1.5x < 15+2.75x

Subtarct 15 on both sides

4+1.5x<2.75x

subtract 1.5x on both sides

4< 1.25x

Divide 1.25 on each side

3.2<X

Since they on,y charge per hour so 4 hours

3 0

4 years ago

Read 2 more answers

-25 Points-

Elden [556K]

Answer:

(x+1)^2+(y+1)^2=13

Step-by-step explanation:

Equation of a circle: (x – h)^2 + (y – k)^2 = r^2

center: (-1, -1)

radius: sqrt(6^2+4^2)/2=sqrt(52)/2=2sqrt(13)/2=sqrt(13)

Substitute those values in to get

(x+1)^2+(y+1)^2=13

7 0

3 years ago