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Pani-rosa [81]
2 years ago
14

IF the sum of four times a number and four less than three times a number is seventeen what is the number

Mathematics
1 answer:
Virty [35]2 years ago
3 0

Answer: 3

Step-by-step explanation: This equation can be written as 4x+3x-4=17

We can now solve.

Moving the 4 to the other side (adding) and we get 21.

Now we have 4x+3x. Adding like terms, we get 7x = 21. Now we divide by 7.

X = 3.

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9 apples and 9 bananas cost £2.43 altogether. The total cost of 2 apples and 3 bananas is £0.69. Calculate the cost of an apple
vekshin1
Answer: 0.27£

Explanation:

9 apples + 9 bananas = 2.43
9(apple + banana) = 2.43
Apple + banana = 2.43/9
Apple + banana = 0.27£

Therefore, the cost of an apple AND a banana is 0.27£
6 0
2 years ago
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The mean salary of people living in a certain city is $37500 with a standard deviation of $1561. a sample of 33 people is select
Murrr4er [49]
The probability is 0.9671.

The z-score for this is given by

z = (x - μ)/(σ/√n)
z = (38000-37500)/(1561/(√33)) = 1.84.

Using a z-table (http://www.z-table.com) we see that the area under the curve to the left of, less than, this is 0.9671.
8 0
3 years ago
Which expression is equivalent to that
kari74 [83]

Answer:

3. 9x

4. D. -5v + 4

Step-by-step explanation:

3. (-3+12)v

= 9v

4. Combine like terms:

(-2v - 3v) + (8 - 4)

= -5v + 4

6 0
3 years ago
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Does Anyone have idea how to solve this problem?
garik1379 [7]
A.

5 * 2 = 10

8 * 2 = 16

10 cm by 16 cm is the new dimensions. Area = 160 sq cm. Perimeter = 52 cm.

B.

5 * 3 = 15

8 * 3 = 24

15 cm by 24 cm is the new dimensions. Area = 360 sq cm. Perimeter = 78 cm.

C.

The areas for the different sized photos both still maintain a ratio of 5:8 cm.
6 0
3 years ago
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Which answer describes the solution to each equation?
BigorU [14]
I hope this helps you

8 0
3 years ago
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