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3 years ago

18 POINTS PLUS BRAINLIEST FOR CORRECT ANSWER

1 answer:

7 0

The line y = -2 is a horizontal line through -2 on the y axis.

Anything perpendicular to this horizontal line will be a vertical line. All vertical lines are of the form x = k where k is some fixed value.

In this case, the answer is x = 4 because want the vertical line to go through (4,-2). In other words, we want all points on the vertical line to have x coordinate of 4.

Side Note: the slope of y = -2 is 0 while the slope of x = 4 is undefined.

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47 = 77 - b; 20, 30, 40

stiv31 [10]

The answer is 30 please mark brainliest if correct

8 0

3 years ago

If a triangle with base 6 has the same area as a circle of radius 6, then the height of the triangle is:

goblinko [34]

Answer: Area of the triangle =21×6×h, where h is the altitude.

Step-by-step explanation:

Forgive me if I'm wrong

5 0

3 years ago

If the center of dilation is at the origin, by what scale factor was octagon ABCDEFGH dilated?

motikmotik

C. 4

Look at where segment A'B' intersects, at x = 8.

Look at where segment AB intersects, at x = 2.

AB is smaller then A'B' that means the scale factor is

$A'B'/AB=\frac{8}{2}=4$ .

Hope this helps.

3 0

3 years ago

Read 2 more answers

1 point

postnew [5]

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$(3 \times 25 )+ 60 = 75 + 60 =$

$135$

Thus Lisa spent 135 $ .

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3 0

3 years ago

Read 2 more answers

The distance from the earth to the moon is 3.84 x 105 km

Anarel [89]

Part (a)

<h3>Answer: $3.84 \times 10^8 \text{ meters}$ </h3>

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Explanation:

Multiply by 1000 to go from km to meters.

This is because 1000 m = 1 km.

Multiplying by 1000 in scientific notation means we add 3 to the exponent 5. The 3 is because 1000 = 10^3.

So the $3.84 \times 10^5 \text{ km}$ becomes $3.84 \times 10^8 \text{ meters}$

===========================================================

Part (b)

Answer in standard form: 960,000 seconds

Answer in scientific notation: $9.6\times10^{5} \text{ seconds}$

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Work Shown:

$\text{distance} = \text{rate}*\text{time}\\\\\text{time} = \frac{\text{distance}}{\text{time}}\\\\\text{time} = \frac{3.84 \times 10^8 \text{ meters}}{400 \ \text{ m}/\text{s}}\\\\\text{time} = \frac{3.84 \times 10^8}{4 \times 10^2} \text{ seconds}\\\\\text{time} = \frac{3.84}{4}*\frac{10^{8}}{10^2} \text{ seconds}\\\\\text{time} = 0.96 \times 10^{8-2} \text{ seconds}\\\\\text{time} = 0.96\times 10^{6} \text{ seconds}\\\\$

$\text{time} = (9.6\times10^{-1})\times10^{6} \text{ seconds}\\\\\text{time} = 9.6\times(10^{-1}*10^{6}) \text{ seconds}\\\\\text{time} = 9.6\times10^{-1+6} \text{ seconds}\\\\\text{time} = 9.6\times10^{5} \text{ seconds}\\\\\text{time} = 960,000 \text{ seconds}\\\\$

To go from the scientific notation to standard form, move the decimal point 5 spaces to the right. The 5 is from the exponent.

3 0

2 years ago