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4 years ago

Please help!! Will mark BRAINLIEST!

Mathematics

1 answer:

fredd [130]4 years ago

5 0

the answer to this would be the 3rd one

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A museum has a model of an Egyptian pyramid. It has a rectangular base that is 10 feet by 8 feet, with a height of 12 feet.

FrozenT [24]

Answer: 320ft^3

Step-by-step explanation:

Assuming the pyramid is just a normal rectangular pyramid and isn't made of stairs...

10x8x12/3 = 320 ft^3

7 0

3 years ago

Hurry please I’m running out of time! Show work

agasfer [191]

Answer:125

Step-by-step explanation:

x*25=125 x=125

5 0

3 years ago

Read 2 more answers

Use the equation a = IaIâ

german

Answer:

a) $\:\:=\sqrt{14}\cdot \frac{\:\:}{\sqrt{14} }$

b) $\:\:=\sqrt{29} \cdot \frac{\:\:}{\sqrt{29} }$

c) $\:\:=7\cdot \frac{\:\:}{7}$

Step-by-step explanation:

a) Let a=<2,1,-3>

The magnitude of a is $|a|=\sqrt{2^2+1^2+(-3)^2}$

$|a|=\sqrt{4+1+9}=\sqrt{14}$

The unit vector in the direction of a is

$\hat{a}=\frac{\:\:}{\sqrt{14} }$

Using the relation $a=|a|\hat{a}$ , we have

$\:\:=\sqrt{14}\cdot \frac{\:\:}{\sqrt{14} }$

b) Let a=2i - 3j + 4k

$|a|=\sqrt{2^2+(-3)^2+4^2}$

$|a|=\sqrt{4+9+16}=\sqrt{29}$

$\hat{a}=\frac{\:\:}{\sqrt{29} }$

Using the relation $a=|a|\hat{a}$ , we have

$\:\:=\sqrt{29} \cdot \frac{\:\:}{\sqrt{29} }$

c) Let us first find the sum of <1, 2, -3> and <2, 4, 1> to get:

<1+2, 2+4, -3+1>=<3, 6, -2>

Let a=<3, 6, -2>

The magnitude is

$|a|=\sqrt{3^2+6^2+(-2)^2}$

$|a|=\sqrt{9+36+4}=\sqrt{49}=7$

The unit vector in the direction of a is

$\hat{a}=\frac{\:\:}{7}$

Using the relation $a=|a|\hat{a}$ , we have

$\:\:=7\cdot \frac{\:\:}{7}$

5 0

4 years ago

hi, i hope everyone is taking care, staying safe, and always smiling. could you help me? it is maths, brainliest will be given

prisoha [69]

Answer:

210 cm³

Step-by-step explanation:

The area of the triangular side is base*half height, which is 7*3=21.

To get the volume, multiply by the depth: 21*10 = 210 cm³

8 0

3 years ago

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A cube has a volume of 0.216 ft?. What is the length of each side of the cube?

const2013 [10]

Answer:

the answer is 0.054

3 0

3 years ago

Read 2 more answers