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Otrada [13]
4 years ago
9

Which expression is equivalent to 6x2 – 19x – 55?

Mathematics
2 answers:
inessss [21]4 years ago
8 0

Answer:

D. on edge

Step-by-step explanation:

slega [8]4 years ago
4 0

Answer:

D) (6x+11)(x-5)

Step-by-step explanation:

Because (6x+11)(x-5)=6x^2+11x-30x-55=6x^2-19x-55.

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A cylindrical storage tank has a depth of 9 ft and a radius measuring 2 ft. The tank needs to be painted. If 1 pint of paint cov
ludmilkaskok [199]

Answer: 3 pints of paint

Step-by-step explanation:

Hi, to answer this question we have to apply the next formula:

Surface area of a cylinder: 2 π r2 + 2 π r h

Where r is the radius and h is the height of the storage.

Replacing with the values given:

SA = 2 π (2)^2 + 2 π (2) 9

SA= 2 π (4)+ 2 π 18

SA= 138.23 ft2

Since 1 pint of paint covers 50 ft2 , we have to divide the surface area by the area that each pint of paint covers:

138.23 / 50 = 2.76 = 3 pints of paint

Feel free to ask for more if needed or if you did not understand something.

3 0
4 years ago
−1 + 6 = 5 + 8 + 4<br> Group of answer choices<br><br> 10<br><br> 1<br><br> -2<br><br> - 3 witch one
Sladkaya [172]

Answer:

12

Step-by-step explanation:

x = 5 + 8 + 4 - 6 + 1

x = 17 - 6 + 1

x = 11 + 1

x = 12

5 0
3 years ago
Read 2 more answers
829.9 to the nearest whole number
anzhelika [568]

when rounding numbers: if it's four or less, you round down. if it's five or more, you round up. 9 is bigger than 4, so the nearest whole number is 830.

7 0
3 years ago
Read 2 more answers
A regular hexagon has sides of 5 feet. What is the area of the hexagon? 12.5 ft 2 37.5 ft 2 25 ft 2 50 ft 2
nasty-shy [4]

Answer:  37.5\sqrt{3}

This value is exact. We can write this as 37.5*sqrt(3)

This approximates to roughly 64.9519

The units for the area are in square feet.

==========================================

Explanation:

Split the regular hexagon into 6 identical equilateral triangles.

Each equilateral triangle has side length x = 5 ft.

The exact area of one of the equilateral triangles is

A = 0.25*sqrt(3)*x^2

A = 0.25*sqrt(3)*5^2

A = 0.25*sqrt(3)*25

A = 0.25*25*sqrt(3)

A = 6.25*sqrt(3)

Multiply this by 6 to get the exact area of the regular hexagon.

6*A = 6*6.25*sqrt(3) = 37.5*sqrt(3) which is the exact area in terms of radicals or square roots.

If your teacher meant to say choice B is 37.5*sqrt(3), then that would be the final answer. If your teacher only said 37.5 without the sqrt(3) term, then there's a typo.

4 0
3 years ago
If in an equation the variables cancel out while solving and u are left with a true statement how many solutions are there and i
Deffense [45]

Answer: infinitely many and none

Step-by-step explanation:

if all variables cancel and you are left with zero, there are infinitely many solutions. if it is false there are no solutions.

4 0
3 years ago
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