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2 years ago

Please help me! I will mark Brainliest if you answer all of these portfolio questions!

Mathematics

1 answer:

klasskru [66]2 years ago

6 0

Answer:

Step-by-step explanation:

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A board is 4 feet 8 inches long how long is the board inches

Otrada [13]

the board is 56 inches long.

how i did this was

12 * 4 = 48

48 + 8 = 56

<em>hope this helps :)</em>

7 0

3 years ago

Ms. Martinez has a class of 16 students. She can spend $17 on each student to buy math supplies for the year. She first buys all

amid [387]

Answer:

none

Step-by-step explanation:

3 0

3 years ago

Hey everyone can someone please help me with 5c :)

Lostsunrise [7]

Answer:

A=23512.32

Step-by-step explanation:

The equation for the area of a cylinder is A=2πrh+2πr^2

If we substitute the radius and height, the equation would be A=2π(60)(2.4)+2π(60)^2

π can be shortened to 3.14 so it's A=2(3.14)(60)(2.4)+2(3.14)(60)^2

We're left with 904.32+22608

So the answer is 23512.32

5 0

3 years ago

Solve for all theta radians. sin(3 theta)=0

Tema [17]

Sin 3θ = 0
3θ = sin^-1 0 = nπ
θ = nπ/3

4 0

3 years ago

The length of a rectangle is four times its width. If the area of the rectangle is 324m^2, find its perimeter.

Anuta_ua [19.1K]

Answer:

$perimeter=90$

Step-by-step explanation:

We know that the length is four times the width, so:

$l=4w$

We also know the area, which is 324 m². The formula for area:

$A=l*w$

Insert the known values:

$324=(4w)*w$

Solve for w. Simplify by removing parentheses:

$324=4w*w\\324=4w^2$

Divide 4 from both sides to isolate the variable:

$\frac{324}{4}=\frac{4w^2}{4} \\\\81=w^2$

Find the square root of both sides:

$\sqrt{81} =\sqrt{w^2} \\\\w=9$

The width is 9 m.

We know the width. Now find the length by using the area formula and inserting known values:

$324=l*9$

Solve for l. Divide both sides by 9:

$\frac{324}{9}=\frac{l*9}{9}\\\\ l=36$

The length of the rectangle is 36. (You can check: 4 times 9 is 36)

Now find the perimeter:

$P=2l+2w$

Insert values:

$P=2(36)+2(9)\\\\P=72+18\\\\P=90$

The perimeter is 90 m.

5 0

3 years ago