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larisa86 [58]
3 years ago
15

Please help me I’m terrible at algebra

Mathematics
1 answer:
Zepler [3.9K]3 years ago
7 0

Answer:

10\leqD+R

D\geqR/3 (or 3D\geqR)

Step-by-step explanation:

Say that D = Decaf and R = Regular

10\leqD+R

D\geqR/3 (or 3D\geqR)

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andrezito [222]
a x^{2} -3vxy - axy + 3b y^{2}
= x(ax-3by) - y(ax-3by)
= (x - y)(ax-3by)
7 0
4 years ago
Please explain 12 and13and please please please hurry!
pantera1 [17]

Answer:

12. a = 2

13. x = \dfrac{4}{3}

Step-by-step explanation:

12.

6a(a + 3) = 2a(3a + 5) + 16

First, distribute 6a on the left side, and distribute 2a on the right side.

6a² + 18a = 6a² + 10a + 16

Subtract 6a² from both sides.

18a = 10a + 16

Subtract 10a from both sides.

8a = 16

Divide both sides by 8.

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13.

\dfrac{1}{3}x + \dfrac{1}{2}x = \dfrac{1}{3}(x + 2)

The LCD of 2 and 3 is 6. We multiply both sides of the equation by 6 to get rid of all denominators.

6 \times \dfrac{1}{3}x + 6 \times \dfrac{1}{2}x = 6 \times \dfrac{1}{3}(x + 2)

\dfrac{6}{3}x + \dfrac{6}{2}x = \dfrac{6}{3}(x + 2)

2x + 3x = 2(x + 2)

Combine like terms on the left side. Distribute the 2 on the right side.

5x = 2x + 4

Subtract 2x from both sides.

3x = 4

Divide both sides by 3.

x = \dfrac{4}{3}

6 0
2 years ago
The sum of three numbers is 88 . The first number is 7 less than the second. The third number is 3 times the second. What are th
icang [17]

88 = X +(x-7)+3X

88=5X-7

95 = 5X

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2nd number = 19

3rd number = 57

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7 0
4 years ago
Tiffany took out a total of $10,000 in subsidized Stafford loans for her four-year college education. How much interest that acc
Alexxandr [17]

Answer:

$2,400

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 6%/100 = 0.06 per year,

then, solving our equation

I = 10000 × 0.06 × 4 = 2400

I = $ 2,400.00

The simple interest accumulated

on a principal of $ 10,000.00

at a rate of 6% per year

for 4 years is $ 2,400.00.

4 0
3 years ago
4 less than half a number is 17.find the number
lana66690 [7]

Answer:

1/2n - 4 = 17

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Step-by-step explanation:

4 0
3 years ago
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