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3 years ago

Help me please. I'm very bad at math and Need help

Mathematics

2 answers:

Y_Kistochka [10]3 years ago

5 0

Answer:

umm I can't see your question.

Only I can see your advise.

Pls post your question immediately

Tom [10]3 years ago

3 0

Answer:

sure, what do you need help with?

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A sphere is inscribed in a cylinder. Use complete sentences and geometric formulas to compare the surface area of the sphere and

grandymaker [24]

Answer:

1 : 1

Step-by-step explanation:

When a circle is inscribed in a cylinder, the height of the cylinder is equal to the diameter of the sphere and the radius of the cylinder is same as that of the sphere.

Let the radius of sphere is r.

height of cylinder, h = 2r

radius of cylinder = r

Surface area of sphere, A = 4πr²

lateral surface area of cylinder, A' = 2 πrh

A' = 2πr x 2r = 4πr²

The ratio of surface area of sphere to the lateral surface area of cylinder is 1 : 1.

7 0

3 years ago

If a(x) and b(x) are linear functions with one variable, which if the following expressions produced a quadratic function?

Alik [6]

$ax^2+bx+c$ Is the answer because it has no other side like $ax^2+bx+c=12$

3 0

3 years ago

A family of four went to a theme park and spent a total of $480 on tickets, food, and souvenirs. ⅙ of their money spent was for

dmitriy555 [2]

Answer:

$70

Step-by-step explanation:

1 - ⅙ - ¼ = (12 - 2 - 3)/12 = 7/12

7/12 × 480 = 280

280/4 = 70

3 0

3 years ago

David, Egil and Frances share money in the ratio 2:7:9. Frances gets ?80 more than David. Explain how you know Egil gets ?80.

Natalija [7]

Step-by-step explanation:

We have been given that David, Egil and Frances share money in the ratio 2:7:9.

Let 2x, 7x and 9x be the amounts of money that David, Agil and Frances get respectively.

We are told that Frances gets $80 more than David. So we can write this information in an equation as:

$9x=2x+80$

Now let us solve for x.

$9x-2x=80$

$7x=80$

$x=\frac{80}{7}$

Now let us substitute $x=\frac{80}{7}$ in 7x (amount of money that Egil gets).

$\text{ Amount of money that Egil will get}=7\cdot \frac{80}{7}$

Upon cancelling out 7 from numerator and denominator we will get,

$\text{ Amount of money that Egil will get}=80$

Therefore, Egil will get $80.

6 0

4 years ago

3x + 2 = x + 8 solve for x

laila [671]

3x+2=x+8
Slandered Form
2x-6=0
Factorizations
2(x-3)=0
Solutions
x=6/2=3 (6 divided by 2 = 3)

6 0

4 years ago