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2 years ago

12

Please help. Is algebra.

2 answers:

bagirrra123 [75]2 years ago

7 0

Answer:

B

Step-by-step explanation:

Arte-miy333 [17]2 years ago

3 0

Answer:

B) 5p^3 + 7p - 4

Step-by-step explanation:

This can be confusing because of the parenthesis, but to answer it all you have to do is group the like terms. Rearrange the problem so it looks like this:

3p^3 + 2p^3 + 5p + 2p - 8 + 4

Now that all the terms are neatly ordered we can simply add the coefficients of the terms with the same variable:

5p^3 + 7p - 4

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CAN SOMEONE HELP PLZ AND EXPLAIN BEC IF DONT DO GOOD I CANT GO TO MY DADS HOUSE THIS WEEK END

Galina-37 [17]

Hello!

6.
Since the area is that of a square, you know that all side lengths are the same.

Area is base times height (A = bh), but since base and height are the same for a square, you get the formula A = a².

$A = a^{2}$
$144 = a^{2}$
$\sqrt{144} = a$
$12 = a$

The length of the side of a square with an area of 144 in² is 12 in.

7.
Rational number.

8.
This is a right triangle; use the Pythagorean Theorem to find missing lengths of right triangles. Pythagorean Theorem: a² + b² = c², where c is the hypotenuse of the triangle.

Plug in your leg lengths:

a² + b² = c²
8² + x² = 21²
64 + x² = 441
x² = 377
x = 19.4

7 0

2 years ago

Eddi Din [679]

Answer:

<AEB = obtuse angle

<AED = straight angle

<BEA = obtuse angle

<BEC = straight angle

<CDE = not angle

<CEA = acute angle

<DEA = straight angle

<DEB = acute angle

<DEC = obtuse angle

Step-by-step explanation:

3 0

2 years ago

The picture shows a circular clock face.

marysya [2.9K]

Answer:

[C] 25π square inches

Step-by-step explanation:

<u><em>Given that:</em></u>

<em>the long hand of the clock is about 5 inches long.</em>

<u><em>To Find:</em></u>

<em>What is the approximate area of the clock face?</em>

<u><em>Solve:</em></u>

<em>Formula - </em><em>A =πr²</em>

<em>Note that;</em>

<em>π = 3.14 (about)</em>

<em>Radius - 5 inches</em>

<em>A =πr²</em>

<em>A = 3.14(5)²</em>

<em>A = 3.14(25)</em>

<em>A = 78.5</em>

<em>Now let see the answer choices:</em>

<em>A. 5π square inches ≈ 5(3.14) = 15.7</em>

<em>B. 10 π square inches ≈ 10(3.14) = 31.4</em>

<em>C. 25 π square inches ≈ 25(3.14) = 78.5</em>

<em>D. 100 π square inches ≈ 100(3.14) = 314</em>

<em />

<em>Hence, the answer is [C] 25 π square inches </em>

<em />

<u><em>Kavinsky~</em></u>

6 0

1 year ago

Read 2 more answers

How are the graphs of the function f(x)= square root 16^x and g(x)=3 square root 64^x related

34kurt

A is the correct awner

8 0

3 years ago

A cylinder shaped can needs to be constructed to hold 400 cubic centimeters of soup. The material for the sides of the can costs

LenKa [72]

Answer:

The dimensions of the can that will minimize the cost are a Radius of 3.17cm and a Height of 12.67cm.

Step-by-step explanation:

Volume of the Cylinder=400 cm³

Volume of a Cylinder=πr²h

Therefore: πr²h=400

$h=\frac{400}{\pi r^2}$

Total Surface Area of a Cylinder=2πr²+2πrh

Cost of the materials for the Top and Bottom=0.06 cents per square centimeter

Cost of the materials for the sides=0.03 cents per square centimeter

Cost of the Cylinder=0.06(2πr²)+0.03(2πrh)

C=0.12πr²+0.06πrh

Recall: $h=\frac{400}{\pi r^2}$

Therefore:

$C(r)=0.12\pi r^2+0.06 \pi r(\frac{400}{\pi r^2})$

$C(r)=0.12\pi r^2+\frac{24}{r}$

$C(r)=\frac{0.12\pi r^3+24}{r}$

The minimum cost occurs when the derivative of the Cost =0.

$C^{'}(r)=\frac{6\pi r^3-600}{25r^2}$

$6\pi r^3-600=0$

$6\pi r^3=600$

$\pi r^3=100$

$r^3=\frac{100}{\pi}$

$r^3=31.83$

r=3.17 cm

Recall that:

$h=\frac{400}{\pi r^2}$

$h=\frac{400}{\pi *3.17^2}$

h=12.67cm

The dimensions of the can that will minimize the cost are a Radius of 3.17cm and a Height of 12.67cm.

3 0

3 years ago