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3 years ago

PLEASE HELP WILL MARK BRAINLIEST!!!

Mathematics

1 answer:

dimaraw [331]3 years ago

4 0

Answer:

Step-by-step explanation:

given x varies inversely with y, the the equation relating them is

x = $\frac{k}{y}$ ← k is the constant of variation

To find k use the condition x = 6 when y = 10, hence

k = xy = 6 × 10 = 60

x = $\frac{60}{y}$ ← equation of variation

When x = 8, then

8 × y = 60 ( divide both sides by 8 )

y = $\frac{60}{8}$ = 7.5 → B

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Please help I will give brainliest to whoever answers this question

pantera1 [17]

Hi!

To solve this, we must make an equation in y = mx + b form, where m is the slope and b is the y-intercept.

Since we are looking at a graph with points, it saves us a TON of work, and all we have to do is simply look at the graph. We only need to find m and b, that's it!

M is the slope, and the slope can be represented by the change between points on a line, also known as rise/run.

If we start at point (-4, -1), and go to point (-2, 0), we can see that it goes up 1 and right 2, which would be represented as 1/2.

B is the y-intercept, and that is simply the point that is on the y-axis, which is the point (0, 1), so our number would be 1.

Therefore, plugging these numbers into the equation, our equation is y = 1/2x + 1

Hope this helps! :D

6 0

2 years ago

Solve the equation using square roots.x2-14=-10

ElenaW [278]

Answer:

x=2

Step-by-step explanation:

$x^{2} -14=-10\\$

Add 14 to both sides

$x^{2}=4$

Square root it

x=2

8 0

3 years ago

How do you do this? please help me

Anastaziya [24]

Answer:

f = 10, g = 4.8 cm

Step-by-step explanation:

Area of ABCE = 60 cm²

Area of ABCD = 48 cm²

So,

Area of ADE = 60-48

=> 12 cm²

Area of ADE = $\frac{1}{2} (Base)(Height)$

Where Area = 12 cm², Base = 4 cm

12 = $\frac{1}{2}(4)(Height)$

Height = 12-2

Height = 10 cm

Where Height is AD

So, AD = 10 cm

Also, AD is parallel and equal to BC $(f)$

So,

f = 10 cm

Now, Finding g

Area of ABCD = $Base * Height$

Where Area = 48 cm², Base = 10 cm

48 = 10 * Height

Height = 48/10

Height = 4.8 cm

Whereas, Height is g

So, g = 4.8 cm

8 0

3 years ago

Volume of the cylinder=?

lyudmila [28]

Answer:

628.32

Step-by-step explanation:

Volume:

πr2h

=π×52×8

= 200π

= 628.31853071796

6 0

2 years ago

Read 2 more answers

Use what you know about the angle sum theorem for triangles and your algebra skills to solve for x and find the measure of all t

melomori [17]

Answer:

2x° = 45°, 3x° = 67.5°

Step-by-step explanation:

Sum of angles in a triangle = 180°

2x+3x+3x=180°

8x=180°

x=22.5°

2x=22.5°x2=45°

3x=22.5°x3=67.5°

8 0

3 years ago