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3 years ago

I need help please....

Mathematics

2 answers:

zalisa [80]3 years ago

5 0

Answer:

$V=\pi * 2000^{2} *6000 = 7.5*10^{10} cm^{3}$

Step-by-step explanation:

We're finding the volume of a cylinder. The equation for that would be $V=\pi r^{2} h$

Plugging into this, we'll get $V=\pi * 2000^{2} *6000 = 7.5*10^{10} cm^{3}$

xeze [42]3 years ago

5 0

Answer:

7.5*10^10

Step-by-step explanation:

trust me its right

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Use the net as an aid to compute the surface area of the triangular prism. A) 112 m2 B) 136 m2 C) 160 m2 D) 184 m2

Aloiza [94]

Answer:

136 m2 Option c

Step-by-step explanation:

136 m2

1 base = 6 × 7 = 42

2 sides = 2(7 × 5) = 70

2 triangles = 2(6 × 4

) = 24

SA = 42 + 70 + 24 = 136 m2

7 0

3 years ago

Read 2 more answers

kate has the following scores on her math test this quarter 89,79,83, and 94.if she want an average of 85 ,what musther score be

Georgia [21]

She must score an 80.

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2 years ago

How many solutions exist for 2|x − 1| = 8?

lora16 [44]

Two solutions exist,
2(x - 1) = 8
2x - 2 = 8
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x = 5
&
2(x + 1) = 8
2x + 2 = 8
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the two solutions are 5 and 3

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3 years ago

Use the discriminant to find the number and type of solution for x^2+6x=-9

likoan [24]

Answer:

D = 0; one real root

Step-by-step explanation:

Discriminant Formula:

$\displaystyle \large{D = {b}^{2} - 4ac}$

First, arrange the expression or equation in ax^2+bx+c = 0.

$\displaystyle \large{ {x}^{2} + 6x = - 9}$

Add both sides by 9.

$\displaystyle \large{ {x}^{2} + 6x + 9 = - 9 + 9} \\ \displaystyle \large{ {x}^{2} + 6x + 9 = 0}$

Compare the coefficients so we can substitute in the formula.

$\displaystyle \large{a {x}^{2} + bx + c = {x}^{2} + 6x + 9 }$

a = 1
b = 6
c = 9

Substitute a = 1, b = 6 and c = 9 in the formula.

$\displaystyle \large{D = {6}^{2} - 4(1)(9)} \\ \displaystyle \large{D = 36 - 36} \\ \displaystyle \large{D = 0}$

Since D = 0, the type of solution is one real root.

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3 years ago

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sveta [45]

Answer:

10 -> 14

15-> 19

20-> 24

25-> 29

Step-by-step explanation:

Add 4 each time

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3 years ago