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Softa [21]
3 years ago
12

Please answer this question

Mathematics
2 answers:
Gelneren [198K]3 years ago
8 0
A=2(LW+LH+WH)

A=2((7/8)(1/3)+(7/8)(2/5)+(1/3)(2/5))

A=2(7/24+14/40+2/15)

A=14/24+28/40+4/15

A=7/14+7/10+4/15  210

A=(105+147+56)/210

A=308/210

A=(210+98)/210

A=1 98/210

A=1 7/15
Tju [1.3M]3 years ago
6 0
To find the volume of a rectangular prism, you need to multiply base x width x height
So..

7       1       2          14                     7
_   x  _   x  _    =    ___ (simplify:)  __

8       3       5         120                   60

The correct answer is 7/60. 

Hope this helped! If it did, please rate, thank, and if it really helped, give brainliest. It helps me rank up. Thanks! :)
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An adult and 5 children rent a skates. it costs $4 per adult for skates and a total of $16
Elenna [48]

Answer:

$2.20 per child

Step-by-step explanation:

16-4=11

11/5=2.2


3 0
3 years ago
Find the area of the shape
Tema [17]

Answer:

  • A. 104 cm²

Step-by-step explanation:

<u>The area is:</u>

  • 22*4 + 2*(1/2)*4*4 = 88 + 16 = 104 cm²

Correct choice is A

5 0
3 years ago
A survey shows that 45% of the respondents pick option A. Given that 50 people replied, what is the standard error of the propor
QveST [7]
The formula for the standard error is this:
σM = σ / √N

where
σM is the standard error
σ is the standard deviation
N is the number of samples

So,
σM = 0.45 / √50
σM = 0.0636 or 6.36%

The standard error is 0.0636
3 0
3 years ago
Read 2 more answers
The length of each side of an equilateral triangle is increased by 20%, resulting in triangle ABC. If the length of each side of
kompoz [17]

Answer: Area of ΔABC is 2.25x the area of ΔDEF.

Step-by-step explanation: Because equilateral triangle has 3 equal sides, area is calculated as

A=\frac{\sqrt{3} }{4} a^{2}

with a as side of the triangle.

Triangle ABC is 20% bigger than the original, which means its side (a₁) measures, compared to the original:

a₁ = 1.2a

Then, its area is

A_{1}=\frac{\sqrt{3} }{4}(1.2a)^{2}

A_{1}=\frac{\sqrt{3} }{4}1.44a^{2}

Triangle DEF is 20% smaller than the original, which means its side is:

a₂ = 0.8a

So, area is

A_{2}=\frac{\sqrt{3} }{4} (0.8a)^{2}

A_{2}=\frac{\sqrt{3} }{4} 0.64a^{2}

Now, comparing areas:

\frac{A_{1}}{A_{2}}= (\frac{\sqrt{3}.1.44a^{2} }{4})(\frac{4}{\sqrt{3}.0.64a^{2} } )

\frac{A_{1}}{A_{2}} = 2.25

<u>The area of ΔABC is </u><u>2.25x</u><u> greater than the area of ΔDEF.</u>

7 0
3 years ago
(01.01 MC)Why is 1 + (−5) equal to −4? I NEED HELP ASAPPPP
miv72 [106K]

Answer:

Hey there!

1+(-5)=1-5

1-5 = -4

Let me know if this helps :)

3 0
3 years ago
Read 2 more answers
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