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3 years ago

What is a point-slope equation of the line with the slope -13 that goes through the point (5,7)?

Mathematics

1 answer:

ohaa [14]3 years ago

8 0

Answer:

Equation of line: y=3x-18

Step-by-step explanation:

Point: (5,7) and slope=-13

y-7=-13(x-5)

y=-13x+72

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A can in your pantry has a 1.4 inch radius and is 5 inches tall. What is the surface area of the can to the nearest tenth?

WITCHER [35]

Well, let's do the math. The formula of a cylinder is 2 (pi, which will be estimated to 3.14) r h + 2 pi (radius times radius).
First of all, do 2 x pi, which is 6.28. Multiply 6.28 x 1.4 is 8.792. 8.792 x 5 = 43.96.
Now for 2 times 3.14 again, which is 6.28. But this time, we do 1.4 x 1.4, which is 1.96. With our new number, we do 6.28 x 1.96, which is 12.3088.
Add 43.96 + 12.3088, and you get 56.2988. You can round it to 56.3. So, the answer is 56.3 inches.

4 0

4 years ago

Top brainilest and extra points

Nataly_w [17]

Answer:

volume of sphere = 288π ft³

Explanation:

volume of sphere = $\frac{4}{3} \pi r^3$

where pi is a constant and r is the radius of the sphere

We are given that:

The diameter of the sphere is 12 ft.

This means that the radius = $\frac{12}{2} = 6 ft$

Substitute with the radius in the above equation to get the volume as follows:

volume = $\frac{4}{3} \pi *(6)^3 = 288\pi$ ft³

Hope this helps :)

3 0

3 years ago

Read 2 more answers

Help plz:))) I’ll mark u brainliest ASAP!!!

Mandarinka [93]

Answer:

x=9

Step-by-step explanation:

80+6x+16=17x-3

=>17x-3-6x-16=80

=>11x-19=80

=>11x=80+19

=>11x=99

=>x=99/11

therefore

x=9

4 0

3 years ago

What is the factorization of the polynomial 2x2 + 24x + 72

Reil [10]

Answer:

$2(x+6)^2$

Step-by-step explanation:

$2x^2 + 24x + 72 = 2(x^2 + 12x + 36) = 2(x+6)^2$

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3 years ago

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What is the difference of the polynomials [m²n²-7]-(mn+4)

AleksAgata [21]

You can do addition and substraction operations with polynomials similarly as with simple real numbers.

First of all you have to open brackets and then you can add numbers (-7-4=-11). Then the result is following:
$(m^2n^2-7)-(mn+4) =m^2n^2-7-mn-4=m^2n^2-mn-11$

5 0

3 years ago