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3 years ago

QUICK HELP!!! PLEASE!! 20 POINTS!

Mathematics

2 answers:

NikAS [45]3 years ago

7 0

Answer:

X/-1 + Y/2 = 1

Step-by-step explanation:

Minchanka [31]3 years ago

5 0

Answer:

y=2x+2

Step-by-step explanation:

The y-intercept, or b, is 2 because the line intersects on the y-axis at (0,2)

To figure out slope, or m, it is the change in y over the change in x or rise over run.

You subtract the y-coordinates

-6-6 = -12

Then you subtract the x-coordinates

-4-2 = -6

You divide the two (the change in y over the change in x)

-12/-6 = 2

Your slope, or m, is 2 or 2/1

You then plug the slope and y-intercept into slope-intercept form (y=mx+b) to receive

y=2x+2 or y=(2/1)x+2

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The area of a circle, in terms of π, is 80π m2. Find the value of the radius. Give your answer as a simplified surd.

jolli1 [7]

Answer:

$r=4\sqrt{5}\:\: \sf m$

Step-by-step explanation:

$\textsf{Area of a circle}=\pi r^2 \quad \textsf{(where r is the radius)}$

Given:

Area = 80π m²

Substitute the given value into the formula and solve for r:

$\implies 80 \pi = \pi r^2$

$\implies \dfrac{80 \pi}{\pi} = \dfrac{\pi r^2}{\pi}$

$\implies 80=r^2$

$\implies \sqrt{r^2}=\sqrt{80}$

$\implies r=\sqrt{80}$

$\implies r=\sqrt{16 \cdot 5}$

$\implies r=\sqrt{16}\sqrt{5}$

$\implies r=\sqrt{4^2}\sqrt{5}$

$\implies r=4\sqrt{5}$

4 0

2 years ago

Read 2 more answers

The graph below shows the distance in miles, m, hiked from a camp in h hours.

Artist 52 [7]

Answer:

Option 1) is correct

Step-by-step explanation:

Given: The graph shows the distance in miles, m, hiked from a camp in h hours.

To find: hourly interval that had the greatest rate of change

Solution:

Rate of change between two points refers to the vertical change divided by the horizontal change.

For hour 0 to hour 1:

rate of change = $\frac{2-0}{1-0}=2$

For hour 2 to hour 3:

rate of change = $\frac{4.5-3.5}{3-2}=1$

For hour 1 to hour 2:

rate of change = $\frac{3.5-2}{2-1}=1.5$

For hour 3 to hour 4:

rate of change = $\frac{5-4.5}{4-3}=0.5$

So, rate of change is greatest in interval: hour 0 to hour 1

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3 years ago

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Please help this is paint BRAINLIEST AND HIGH POINTS for correct answer :(

nordsb [41]

Answer:

the last one trust me i am basically a calculator when it comes to math which is 2 1/3 more gallons

Step-by-step explanation:

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3 years ago

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What is the slope of the linear equation 9×+3y=21?

trasher [3.6K]

Answer:

Step-by-step explanation:

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3 years ago

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two triangles are similar. The base of the first triangle is 10 cm and the height is 15 cm. The base of the second triangle is 1

Andrei [34K]

Answer:

the height is 18cm

Explanation:

If two objects have the same shape, they are called "similar." When two figures are similar, the ratios of the lengths of their corresponding sides are equal. To determine if the triangles shown are similar, compare their corresponding sides. Are these ratios equal?

given that

Triangle 1 (first triangle)

base = 10cm

height = 15cm

Triangle 2 (second triangle)

base = 12cm

height = unknown

base 1 / base 2 = height 1 / height 2

10cm / 12cm = 15cm / xcm

xcm = 18cm

height = 18cm

8 0

4 years ago