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ArbitrLikvidat [17]
3 years ago
14

Can someone help me with this? My teacher said its a must in the homework and i cant find a solution.

Mathematics
1 answer:
andrezito [222]3 years ago
5 0

Answer:

8x^3+28x^2-16x

Step-by-step explanation:

Volume of rectangular prism: l*b*h (l = length, b = breadth, h = height.)

Volume of rectangular prism:

(x+4)*(2x-1)*4x

4x\left(x+4\right)\left(2x-1\right)

Expand the two brackets using FOIL:

4x(x* \:2x+x\left(-1\right)+4* \:2x+4\left(-1\right))

4x\left(2x^2+7x-4\right)

Expand:

4x* \:2x^2+4x* \:7x+4x\left(-4\right)

8x^3+28x^2-16x

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Help with this question Asap!! I need all the help I can get!
tankabanditka [31]

Answer:

\large{YES}\ \dfrac{BC}{YZ}=\dfrac{AC}{XY}=\dfrac{AB}{XZ}=\dfrac{2}{1}\\\\\text{and}\ \angle B\cong\angle Z,\ \angle C\cong\angle Y,\ \angle A\cong\angle X

Step-by-step explanation:

BC\to ZY\\AB\to XZ\\AC\to XY\\\angle A\to\angle X\\\angle B\to\angle Z\\\angle C\to\angle Y

\text{We have:}\\\\\triangle ABC:\ AB=20,\ BC=12,\ AC=18\\\triangle XZY:\ XZ=10,\ YZ=6,\ XY=9\\\\\text{check the ratio:}\\\\\dfrac{AB}{XZ}=\dfrac{20}{10}=2\\\\\dfrac{BC}{YZ}=\dfrac{12}{6}=2\\\\\dfrac{AC}{XY}=\dfrac{18}{9}=2\\\\\text{CORRECT :)}\\\\\angle B\cong\angle Z,\ \angle C\cong\angle Y\\\\\text{We know that: The sum of the acute angles in a right triangle is}\ 90^o.\\\\m\angle B+m\angle A=90^o\ \text{and}\ m\angle Z+m\angle X=90^o

\text{We know}\ m\angle B=m\angle Z\to \ m\angle A=m\angle X.\\\text{therefore}\ \angle A\cong\angle X

5 0
3 years ago
Simplify:<br> 3(8) ° . (3) -2
jek_recluse [69]
3 x 8 = 24

3 x -2 = -6

reply if you this was wrong or you needed a different answer pls >:(
3 0
4 years ago
Given f(x) = -5x + 1. What is f(-3)?
babunello [35]

Answer:

f(-3) =16

Step-by-step explanation:

f(x) = -5x + 1

f(-3) means let x=-3

Substituting x=-3 into the equation

f(-3) = -5 (-3) +1

Multiplying -5 and -3

f(-3) = 15+1

f(-3) =16

7 0
3 years ago
Read 2 more answers
State all integer values of x in the interval [2, 7] that satisfy the following inequality: 3x + 4 &lt; 14​
Sati [7]

Answer:

456

Step-by-step explanation:

thank you for the free ponits :)))

7 0
3 years ago
You plan on purchasing a car in the next year. The car that you are interested in lists for $23,000 after taxes, license, and do
bixtya [17]

Answer:

c. 8 months.

Step-by-step explanation:

First let's break down all the expenses and taxes to come up with how much we save each month and subtract it to our total salary monthly.

Total Salary : $1312.00 x 2 = $2,624.00

Current Savings : 2/3 or 0.67 = $15333.33

| Expenses |

Monthly Expenses : $1,150.12

Social Security : 6.2% or 0.062 x 2,624 = $162.69

Medicare : 1.45 or 0.0145 x 2,624 = $38.05

Taxes: $53 + $101.35 = 154.35 x 2 = $308.7

So we sum up all the expenses.

= $1659.56 Total Expenses.

Now we have to find how much extra money we have each month.

= $964.44 Extra Money

Now we subtract our current savings to the total price of the car.

= -7666.67 Balance

Now we divide the total balance to our extra money monthly.

= 7.949 Months or 8 Months

6 0
3 years ago
Read 2 more answers
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