3 years ago

Please help with my math

Mathematics

1 answer:

Makovka662 [10]3 years ago

4 0

first one is C and second is D

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The answer and how you got it

mart [117]

The answer is 12
12-(5+3)=4
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3 years ago

What is the volume of this pyramid? 945 cm³ 1260 cm³ 1890 cm³ 2520 cm³ A pyramid with a right triangular base. The right triangu

notsponge [240]

Answer:

The volume of the pyramid is $1,260\ cm^{3}$

Step-by-step explanation:

we know that

The volume of the triangular pyramid is equal to

$V=\frac{1}{3}BH$

where

B is the area of the triangular base

H is the height of the pyramid

step 1

Find the area of the base B

$B=\frac{1}{2}bh$

we have

$b=14\ cm$

$h=18\ cm$

substitute

$B=\frac{1}{2}(14)(18)=126\ cm^{2}$

step 2

Find the volume

we have

$B=126\ cm^{2}$

$H=30\ cm$

substitute

$V=\frac{1}{3}BH$

$V=\frac{1}{3}(126)(30)=1,260\ cm^{3}$

5 0

3 years ago

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One pound of grapes costs $1.55. Which equation correctly shows a pair of equivalent ratios that can be used to find the cost of

stira [4]

Answer:

StartFraction 1.55 over 1 EndFraction = StartFraction x over 3.5 EndFraction

Step-by-step explanation:

$\frac{1.55}{1} = \frac{x}{3.5} \\ \\ \therefore \: x = 1.55 \times 3.5 \\ \\ \therefore \: x = \$ 5.425 \\ \\\therefore \: x\approx \$5.43$

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3 years ago

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20 POINTS!!!What is the solution to the system that is created by the equation Y = 2x+ 10 and the graph shown below?

skad [1K]

Answer:

(-8,-6)

Step-by-step explanation:

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OverLord2011 [107]

Answer:

The nth term is 6 .

13 — 7 = 6

7— 4 = 6

1 — (–5) = 6

-5— (-11) = 6

3 0

2 years ago

Please help with my math ​

Please help with my math