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3 years ago

What is 7x-(2x-7)-(-6+1) simplified

Mathematics

1 answer:

expeople1 [14]3 years ago

6 0

Answer:

5x + 12

Explanation:

7x − (2x − 7) − (−6 + 1)

Distribute the Negative Sign

7x − (2x − 7) + −1(−6 + 1)

7x + −2x + 7 + (−1)(−6) + (−1)(1)

7x + −2x + 7 + 6 + −1

Combine Like Terms

7x + −2x + 7 + 6 + −1

(7x + −2x) + (7 + 6 + −1)

= 5x + 12

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-12 increased by half of a number is 28. What is the number

Nadya [2.5K]

Answer:

Step-by-step explanation:

28-28=0

0-12= -12

28+12 = 40

28-40 = -12

40 is the increase

40 is half of 80

So, the answer is 80

To check: -12 + 40 (half of a number; 80) = 28

Hope this makes sense. If you require further information, do not hesitate to ask!

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2 years ago

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A Right Triangle (ABC) has sides measuring 3 inches and 4 inches. The hypotenuse is 5 inches. A similar right triangle (A'B'C')

fenix001 [56]

Answer:

The length of hypotenuse is 12.5

Step-by-step explanation:

First 7.5 x 7.5 = 56.25

Then 10 x 10 = 100

Add them together 56.25 + 100 = 156.25

Then square root 156.25 and you get 12.5

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3 years ago

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Find the slope of the line that contains the following points: (17, -12) and (17, 8)

schepotkina [342]

Answer:

m = undef

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Coordinates (x, y)
Slope Formula: $\displaystyle m=\frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Point (17, -12)

Point (17, 8)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute in points [Slope Formula]: $\displaystyle m=\frac{-12-8}{17-17}$
[Fraction - Denominator] Subtract: $\displaystyle m=\frac{-12-8}{0}$

We cannot divide anything by 0.

∴ Our slope m is undefined and it would be a vertical line if graphed.

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Answer:

Good

Step-by-step explanation:

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iren [92.7K]

This is very similar to the other question. The vertex is at (-8,-8) and the radius is 1.

answer: (x+8)²+(y+8)²=1

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