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4 years ago

I need help on this math

Mathematics

1 answer:

zubka84 [21]4 years ago

7 0

Area = 20x5=100
Perimeter = 10+10+20+20=60

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Who created the circumference of the circle

densk [106]

Abraham Lincoln djdjxu d d d d d d djdjsisow s susbs s s

4 0

4 years ago

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Solve X/3 + 5/2 = -3/2 pls pls

Tamiku [17]

Answer:

X=-12

Step-by-step explanation:

Subtract -5/2 on both sides:

X/3+5/2-5/2=-3/2-5/2

X/3=-8/2

X/3=-4

Multiply both sides by 3:

X/3*3=-4*3

X=-12

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2 years ago

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One canned juice drink is 20% orange juice, another is 5% orange juice, how many liters of each should be mixed together in orde

gavmur [86]

Answer:

11 L of 20% juice and 4 L of 5% juice

Step-by-step explanation:

Let

x L = amount of 20% juice

y L = amount of 5% juice

20% juice:

Amount = x L

Amount of juice $=0.2x$ L

5% juice:

Amount = y L

Amount of juice $=0.05y$ L

16% juice:

Amount = 15 L

Amount of juice $=0.16\cdot 15=2.4$ L

We mixed x L of 20% juice with y L of 5% juice to get 15 L of 16% juice, so

$x+y=15$

and

$0.2x+0.05y=2.4$

From the first equation:

$x=15-y$

Substitute it into the second equation:

$0.2(15-y)+0.05y=2.4\\ \\20(15-y)+5y=240\\ \\300-20y+5y=240\\ \\-20y+5y=240-300\\ \\-15y=-60\\ \\15y=60\\ \\y=4\ L\\ \\x=15-4=11\ L$

4 0

4 years ago

PLease help me solve this

Mnenie [13.5K]

Answer: 729

Step-by-step explanation:

$\frac{1}{3^{-2} * 3^{-4} * (-1)^{2} }$

3^-2 = 1/9

3^-4 = 1/81

(-1)^2 = 1

1/(1/9 * 1/81 * 1)

1/ 1/729 = 729

4 0

2 years ago

What is the complete factorization of the polynomial below? x^3+ 5x^2- x-5

koban [17]

Answer:

(x-1)(x+1)(x+5)

Step-by-step explanation:

x^3+5x^2 - x-5=

x^3-x+5x^2-5=

x(x^2-1) +5(x^2 - 1)=

(x^2- 1)(x+5)=(*)

(x-1)(x+1)(x+5)

(*) A^2 - B^2 =(A-B)(A +B)

7 0

3 years ago