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3 years ago

Can someone help me get better in math?

Mathematics

1 answer:

ddd [48]3 years ago

8 0

Answer:

I can, I'll follow you and so I will get a notification every time you ask a question. Then I will answer it.

Step-by-step explanation:

You might be interested in

When graphing, one always marks FIRST

Ket [755]

Answer:

The y-intercept on the y-axis

Step-by-step explanation:

The y-intercept is where you start graphing. That's why it's important to find that first.

Hope this helps!!

7 0

2 years ago

B) The number of volume of a cylinder is half of its number of the total surface area.

faust18 [17]

Answer:

$V=179.6cm^3$

Step-by-step explanation:

the volume of a cylinder is given by:

$V=\pi r^2h$

where r is the radius and h is the height.

and the surface area:

$SA=2\pi r^2+2\pi rh$

the first term is the area of the circles and the second term is the area of the body.

since "The number of volume of a cylinder is half of its number of the total surface area." we will have that:

$V=\frac{1}{2}SA$

substitutig the equivalent expressions on each side:

$\pi r^2 h = \frac{1}{2} (2\pi r^2+2\pi r h)$

and we simplify and solve for the height (since is the value we don't know of the cylinder):

$\pi r^2 h = \pi r^2+\pi r h\\\pi r^2h-\pi rh=\pi r^2\\h(\pi r^2-\pi r)=\pi r^2\\h=\pi r^2/(\pi r^2-\pi r)$

we substitute the value of the radius $r=7cm$ , and we get:

$h=\pi (7cm)^2/(\pi (7cm)^2-\pi (7cm))\\h=153.938/(153.938-21.991)\\h=153.938/131.947\\h=1.1666cm$

thus the volume is:

$V=\pi r^2h$

$V=\pi (7cm)^2(1.1666cm)\\V=179.6cm^3$

3 0

2 years ago

Read 2 more answers

ASAP DINT ANSWER IF YOU DONT DO ALL BRAINLEST TO THE ORECT ANSWERS

KiRa [710]

Answer:

The first one towards the left, or the green triangle, would be 70 degrees.

The second one, or the one in the middle, would be 108 degrees.

The last one, or the yellow triangle, would be 65 degrees.

8 0

2 years ago

I got -4 but I don't see it on here, did I do something wrong??

Ira Lisetskai [31]

Answer:

it is -4

Step-by-step explanation:

but the answer is not on there so the answer will be D.

5 0

2 years ago

Read 2 more answers

Can somebody help me with this? Thank you

melomori [17]

Answer:

x≥1 or x≤−3

Step-by-step explanation:

x+1≥2 possibility 1

x+1−1≥2−1 Subtract 1 from both sides

x≥1

x+1≤−2 Possibility 2

x+1−1≤−2−1 Subtract 1 from both sides

x≤−3

4 0

2 years ago