3 years ago

Which of the expressions bellow is equal to -3x - 39

Mathematics

1 answer:

Serjik [45]3 years ago

7 0

Answer:

117

(-3) × (-39) = 117

Step-by-step explanation:

hope it helps!

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3. Find the volume of the pyramid.

Gnoma [55]

Answer:

$916.11\:ft^{3}$

Step-by-step explanation:

Volume of the hexagonal pyramid = $1/3\times (area\: of \: hexagonal\:base)\times height$

Here sides of hexagonal base = 9 ft

So, Area of hexagon = $6\times \frac{\sqrt{3} }{4} a^{2}$

$6\times \frac{\sqrt{3} }{4} \times 9 \times 9$

$= 210.5$

Height is given, 13 ft

So, volume = $1/3\times 210.5\times 13$

$= 916.11\: ft^{3}$

OAmalOHopeO

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3 years ago

Solve for x. x2 + 4x - 21 = 0

Anton [14]

2x + 4x - 21 = 0
6x - 21 = 0
6x = 21
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3 years ago

Which product is positive? BA :) OGO (100) G 8 3

romanna [79]

Wouldn’t the answer be 8 and 3

6 0

3 years ago

(16+5i) + (6-7i) How do I solve this?

Fantom [35]

Answer:

$\large\boxed{(16+5i)+(6-7i)=22-2i}$

Step-by-step explanation:

$(16+5i)+(6-7i)=16+5i+6+7i\qquad\text{combine like terms}\\\\=(16+6)+(5i-7i)=22-2i$

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3 years ago

Read 2 more answers

The ratio of boys to girls in a school is 9:11. If there are 400 pupils in the school,how many boys are there

Anvisha [2.4K]

I believe its 180.

I have seen this question before and the amount of girls was 220, so 400-220 is 180

Hope this helps :)

5 0

3 years ago