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m_a_m_a [10]
3 years ago
7

CAN SOMEONE PLEASE HELP ME ITS URGENT DUE TODAYYY

Mathematics
1 answer:
topjm [15]3 years ago
7 0

Answer:

45%

Step-by-step explanation:

Out of 120 problems, 54 were right

54/120

54/120=0.45=45%

45%

Good luck on the rest of your homework! :)

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22. Solve 7x - 9 = 28+ 4(x - 1).<br> X=-3<br> X=3<br> x = 11<br> X=-11​
aleksley [76]

Answer:

c) x = 11

Step-by-step explanation:

Given equation: 7x - 9 = 28 + 4(x - 1)

<u><em>Steps:</em></u>

1. Distribute 4 through the parentheses:

7x - 9 = 28 + 4(x) + 4(-1)

7x - 9 = 28 + 4x - 4 [simplify]

7x - 9 = 24 + 4x

2. Subtract 4x from both sides:

7x - 4x - 9 = 24 + 4x - 4x

3x - 9 = 24

3. Add 9 to both sides:

3x - 9 + 9 = 24 + 9

3x = 33

4. Divide both sides by 3:

3x ÷ 3 = 33 ÷ 3

x = 11

5. Check your work:

7x - 9 = 28 + 4(x - 1) [substitute 11 for x]

7(11) - 9 = 28 + 4(11 - 1) [simplify]

77 - 9 = 28 + 4(10) [simplify]

68 = 28 + 40 [add]

68 = 68 ✔

Learn more here:

brainly.com/question/27844321

brainly.com/question/21222758

7 0
2 years ago
Read 2 more answers
9(2w−y)=21w−9y Solve for y
valentinak56 [21]

9(2w−y)=21w−9y

First you multiply the numbers in the parenthesis by 9

18w-9y=21w-9y

subtract. 21w-18w=3w

-9y=3w-9y

add. -9y+9y=0

0=3w

divide.

0=w

Final answer is 0.

5 0
3 years ago
Simplify the expression
hjlf

Hi, I took a while

The answer is c Have a good day

8 0
3 years ago
Read 2 more answers
Jonah is going to the store to buy candles for his igloo. Small candles cost $3.50 and large candles cost $5.00. He needs to buy
Semmy [17]

Answer:

x+y\geq 20

3.50x+5.00y\leq 80

Step-by-step explanation:

Let x represent number of small candles and y represent number of large candles.

We have been given that Jonah needs to buy at least 20 candles. This means number of small and large candles should be greater than or equal to 20. We can represent this information in an inequality as:

x+y\geq 20...(1)

We are also told that small candles cost $3.50, so cost of x small candles would be 3.50x.

Since large candles cost $5.00, so cost of y large candles would be 5.00y.

We are told that Jonah cannot spend more than $80, this means cost of x small candles and y large candles should be less than or equal to $80. We can represent this information in an inequality as:

3.50x+5.00y\geq 80

Therefore, our required system of inequalities would be:

x+y\geq 20

3.50x+5.00y\leq 80

4 0
3 years ago
A health club charges a one-time sign-up fee and a monthly membership fee. The equation y=30x+40 represents what the health club
riadik2000 [5.3K]

Answer:

$24

Step-by-step explanation:

30X + 40

$24 IS THE RATE OF CHANGE

5 0
3 years ago
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