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3 years ago

12

Please help thanks Xxxx

1 answer:

pentagon [3]3 years ago

3 0

Answer:

D

Step-by-step explanation:

Examples of a direct variation is y=kx and k=y over x

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How do i solve 4g + 2 ≥ - 14

Kryger [21]

Answer:

g ≥ -4

Step-by-step explanation:

4g + 2 ≥ - 14

-2 -2 Subtract 2 from both sides

4g ≥ -16

g ≥ -4 Divide both sides by 4

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3 years ago

The Question is: Write 1/3 and 3/4 as a pair of fractions with a common denominator

cupoosta [38]

1/3*4= 4/12
3/4*3= 9/12
Answer is 4/12 and 9/12.

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3 years ago

Find the circumference and area of the circle. Round to the nearest tenth.<br> 2 m

Fed [463]

Radius=2m

Circumference:-

$\\ \bull\sf\dashrightarrow 2\pi r$

$\\ \bull\sf\dashrightarrow 4(3.14)$

$\\ \bull\sf\dashrightarrow 12.56m$

Area.

$\\ \bull\sf\dashrightarrow \pi r^2$

$\\ \bull\sf\dashrightarrow 3.14(2)^2$

$\\ \bull\sf\dashrightarrow 3.14(4)$

$\\ \bull\sf\dashrightarrow 12.56m^2$

8 0

2 years ago

Read 2 more answers

Use unit rate to find the unknown value: 2/8 = 7/? <br> 1. 56<br> 2. 4<br> 3. 28<br> 4. 24

bezimeni [28]

Answer:

I believe the awnser is 3

4 0

2 years ago

A spotlight on the ground shines on a wall 12 m away. If a man 2 m tall walks along the x-axis from the spotlight toward the bui

Sedbober [7]

Answer:

0.675 m/s

Step-by-step explanation:

Let height of shadow= y,CD=x

Height of man=2 m

Speed of man= $\frac{dx}{dt}=1. 8 m/s$

$\triangle ABD\sim\triangle ECD$

Therefore, $\frac{AB}{EC}=\frac{BD}{CD}$

$\frac{y}{2}=\frac{12}{x}$

$xy=24$

Differentiate w.r.t t

$x\frac{dy}{dt}+y\frac{dx}{dt}=0$

$x\frac{dy}{dt}=-y\frac{dx}{dt}$

$\frac{dy}{dt}=-\frac{y}{x}\frac{dx}{dt}$

When the man is 4 m from the building

Then, we have x=12-4=8 m

$\frac{dx}{dt}=1.8 m/s$

Substitute the values in above equation then, we get

$8y=24$

$y=\frac{24}{8}=3$

Substitute the values then we get

$\frac{dy}{dt}=-\frac{3}{8}\times 1.8=-0.675 m/s$

Hence, the length of his shadow on the building decreasing at the rate 0.675 m/s.

8 0

3 years ago