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3 years ago

I need help fast! This is 8th grade math

Mathematics

1 answer:

MArishka [77]3 years ago

7 0

Answer: b

Step-by-step explanation:

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I need help plzzzz!!!!!! find the area

UNO [17]

Answer:

Step-by-step explanation:

Area = 1/4 * √(5(5+2√5)) * a^2

Area ≈387.11

because each bag only covers 150 we need 3 bags

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3 years ago

Read 2 more answers

Please help!!!!!!!!!!!!

irina1246 [14]

Answer:

$40\frac{5}{8}mm^2$

Step-by-step explanation:

To find the area of a triangle, one must use the formula,

$\frac{base*height}{2}$

It is given that

- base = $9\frac{3}{4}$

-height = $8\frac{1}{3}$

Substitute in the values and solve;

$\frac{9\frac{3}{4}*8\frac{1}{3}}{2}$

In order to multiply the two fractions, one must convert them from mixed number form to improper fraction form. This can be done by multiplying the denominator (the number under the fraction bar), by the "number" part of the mixed number, and then adding the result to the numerator (the number over the fraction bar;

- base = $9\frac{3}{4}=\frac{(9*4)+3}{4}=\frac{36+3}{4}=\frac{39}{4}$

- height = $8\frac{1}{3}=\frac{(8*3)+1}{3}=\frac{24+1}{3}=\frac{25}{3}$

Substitute,

$\frac{\frac{39}{4}*\frac{25}{3}}{2}$

Cross simplify,

$\frac{\frac{325}{4}}{2}$

Further simplify,

$\frac{325}{4}*\frac{1}{2}\\\\= \frac{325}{8}$

Convert back to a mixed number divide the numerator by the denominator, write the whole-number result as the number outside of the fraction, and the remainder as the numerator of the fraction,

$40\frac{5}{8}$

4 0

3 years ago

6(s+t)=(6•s)+(6•t)<br> What property is shown above?

Korvikt [17]

Distributive property is shown.

Hope this helps! :)

6 0

3 years ago

a right rectangular prism has a length of 2 1/2 feet and width of 3 feet and a height of 1 and 1/2 feet. Unit cubes with side le

anygoal [31]

The volume of the right rectangular prism is the product of all its dimensions, length, width and height. Since all these dimensions are given, therefore, we can directly calculate the volume of the right rectangular prism by substitution to the formula.

V = L*W*H
V = (2.5 ft)(3 ft)(1.5 ft)
<em>V = 3.375 ft³ or 3 and 3/8 ft³</em>

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4 years ago

Read 2 more answers

Let A and B be 2 Ã 2 matrices. A) Does det(A + B) = det(A) + det(B)? B) Does det(AB) = det(A) det(B)? (C) Does det(AB) = det(BA)

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Step-by-step explanation:

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3 years ago