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3 years ago

9y + 9 - 3y + 7 = 2y + 4 y = Answer

Mathematics

1 answer:

DENIUS [597]3 years ago

7 0

Answer:

y = -3

Step-by-step explanation:

9y + 9 - 3y + 7 = 2y + 4

Collect like terms;

6y + 16 = 2y + 4

Subtract 2y from both sides;

4y + 16 = 4

Subtract 16 from both sides;

4y = -12

Divide both sides by 4;

y = -3

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At the beginning of mathematics class, Mrs. Reno gives a warm-up problem. She says, "I am think of a number such that 6 less tha

Eduardwww [97]

7x - 6 = 85
7x = 85 + 6
7x = 91
x = 91/7
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5 0

2 years ago

What is the next number? 2+3=8 3+7=27 4+5=32 5+8=60 6+7=72 7+8=?

ale4655 [162]

Answer:

Step-by-step explanation:

2 + 3 = 8

8 : 2 = 4; 4 - 1 = 3 (subtract 1)

3 + 7 = 27

27 : 3 = 9, 9 - 2 = 7 (subtract 2)

4 + 5 = 32

32 : 4 = 8; 8 - 3 = 5 (subtract 3)

5 + 8 =60

60 : 5 = 12, 12 - 4 = 8 (subtract 4)

6 + 7 = 72

72 : 6 = 12, 12 - 5 = 7 (subtract 5)

7 + 8 = x

x : 7 = y, y - 6 = 8 (subtract 6)

Solve:

y - 6 = 8 add 6 to both sides

y - 6 + 6 = 8 + 6

y = 14

x : 7 = y ⇒ x : 7 = 14 ⇒ x = (14)(7) ⇒ x = 98

8 0

3 years ago

What is 4 multiplied by 5 7/9 as a mixed number or fraction

Andrei [34K]

The answer is 23 and 1÷9

First you multiply 4 by 5 and wind up with 20
Then you multiply four by 7÷9.
That gets you 28÷9
You take out all the nines you can from 28, three in this case.
That gets you 27÷9 + 1÷9
Your total thing is 20+27÷9+1÷9
That equals 20+3+1÷9
That equals 23 and 1÷9

8 0

3 years ago

7x-9x what is the answer

Oksanka [162]

Answer:

-2x

Step-by-step explanation:

The expression itself is -2x. We subtract the coefficients 7 and 9 to get -2.

7 0

3 years ago

Read 2 more answers

Pls help pls help me Compare the following 2/-3, -4/5, 21/-32, -15/24

mote1985 [20]

Step-by-step explanation:

to compare them, we should all bring to the same denominator.

the lcm (lowest common multiplier) is the that denominator.

let's use the approach of the prime factors :

3 : 3

5 : 5

32 : 2×2×2×2×2

24 : 2×2×2×3

the lcm is the combination of the longest "streaks" of the prime factors.

so,

2×2×2×2×2 × 3 × 5 = 32×15 = 480

2/-3 = -2/3 = -320/480 (as 3×160 = 480)

-4/5 = -4×96 / 5×96 = -384/480 (as 5×96 = 480)

21/-32 = -21/32 = -315/480 (as 32×15 = 480)

-15/24 = -15×20 / 24×20 = -300/480 (24×20 = 480)

-384/480 < -320/480 < -315/480 < -300/480

we can say

-4/5 < -2/3 < -21/32 < -15/24

3 0

2 years ago