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mixer [17]
3 years ago
5

When solving negative one over five (x − 25) = 7, what is the correct sequence of operations?

Mathematics
2 answers:
klasskru [66]3 years ago
5 0
Multiply each side by -5, then add 25 to each side.

Mashutka [201]3 years ago
4 0

Answer: Multiply each side by −5, add 25 to each side

Step-by-step explanation:

Given expression: \frac{-1}{5}(x-25)=7

According to the BODMAS (bracket, of, divide, multiply, add, subtract), to solve for x, we need to first multiply -5 on both sides, we get

x-25=7\times-5\\\Rightarrow x-25=-35

Now, add 25 on both sides, we get

x-25+25=7+25\\\Rightarrow\ x=32

Hence, the correct sequence of operations is "Multiply each side by −5, add 25 to each side".

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Which number line shows the estimate of 22 in the correct interval of integers?​
Marta_Voda [28]

Answer:

the answer is B

Step-by-step explanation:

Just estimate ex: 5 x 5 would be 25, so sqrt 22 would be just before the 5.

5 0
3 years ago
Read 2 more answers
Can you please help
Dmitry [639]

Answer is in the file below

tinyurl.com/wpazsebu

4 0
2 years ago
How do you read this expression 8(8x+7) and 8(3x)+8(7)
Misha Larkins [42]

Answer:

64x+56 & 24x+56

Step-by-step explanation:

I hope this is what you mean because this is not an equation as it is not set equal to anything.


Both problems solved by distributive property -

8*8x + (8*7) = 64x+56

8*3x + (8*7) = 24x+56

4 0
3 years ago
Please can someone prove this equation
zubka84 [21]

Answer:

see explanation

Step-by-step explanation:

Using the trigonometric identity

sin²x + cos²x = 1

Consider the left side

2cos²A - 1 ← replace 1 by sin²A + cos²A

= 2cos²A - ( sin²A + cos²A)

= 2cos²A - sin²A - cos²A

= cos²A - sin²A = right side ⇒ verified



6 0
2 years ago
Write a linear equation that represents the cost of buying t-shirts from Paula's printing. identify the meaning of each variable
g100num [7]

Answer:

Part 1) y=x+21.5

Part 2) y=x+18

Step-by-step explanation:

Part 1) Write a linear equation that represents the cost of buying t-shirts from Paula's printing.

Let

x ----> the number of t-shirts

y ----> the cost in dollars

step 1

Find the slope

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

take two points from the table

(2,23.5) and (4,25.5)

substitute in the formula

m=\frac{25.5-23.5}{4-2}

m=\frac{2}{2}=1

step 2

Find the equation of the line in point slope form

y-y1=m(x-x1)

we have

m=1

(x1,y1)=(2,23.5)

substitute

y-23.5=(1)(x-2)

Convert to slope intercept form

y=mx+b

y=x-2+23.5

y=x+21.5

Part 2) Write a linear equation that represents the cost of buying t-shirts from Shantay's shirts.

Let

x ----> the number of t-shirts

y ----> the cost in dollars

step 1

Find the slope

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

take two points from the table

(2,20) and (4,22)

substitute in the formula

m=\frac{22-20}{4-2}

m=\frac{2}{2}=1

step 2

Find the equation of the line in point slope form

y-y1=m(x-x1)

we have

m=1

(x1,y1)=(2,20)

substitute

y-20=(1)(x-2)

Convert to slope intercept form

y=mx+b

y=x-2+20

y=x+18

6 0
2 years ago
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