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ehidna [41]
3 years ago
15

Simplify -(-7y+12) and explain

Mathematics
2 answers:
otez555 [7]3 years ago
8 0
Use the Distributive Property to Simplify. However, to make it easier, write out the equation like this. 
-1(-7y+12)
This makes it so it simplifies to 7y-12.
Gre4nikov [31]3 years ago
3 0
In front of the negative their is an invisible 1 and that invisible 1 is the one your going to do distributive property with and then get a positive 7 because a negative divided by a negative is a positive.Your going to do the same thing to the twelve and then your answer is going to be 7y-12
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If 2 inches are equivalent to 5 centimeters, how many square centimeters are in one square inch
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Answer:

there are 6.45 or 6.5 square cm in one square inch

Step-by-step explanation:

6 0
3 years ago
(x – 3)(4x + 2) using the distributive property. Select the answer choice showing the correct distribution
Nataly [62]

The distributive property: a(b + c) = ab + ac

(x - 3)(4x + 2) = (x)(4x + 2) + (-3)(4x + 2)

= (x)(4x) + (x)(2) + (-3)(4x) + (-3)(2) = 4x² + 2x - 12x - 6

<h3>= 4x² - 10x - 6</h3>
5 0
3 years ago
Which of the following statements is true about an image after a dilation?
tino4ka555 [31]

Answer:

Not sure what the answer choices are, but choose the choice that says the new image is either stretched or shrunk. In a dilation, the shape/corresponding sides of the pre-image are preserved in the new image, but the size of the new image is altered.

Step-by-step explanation:

hope this helps!

6 0
3 years ago
calculates the sum of the first 8 terms of an arithmetic progression starting with 3/5 and ending with 1/4
N76 [4]

We conclude that the sum of the first 8 terms of the arithmetic sequence is 17/5.

<h3>How to get the sum of the first 8 terms?</h3>

In an arithmetic sequence, the difference between any two consecutive terms is a constant.

Here we know that:

a_1 = 3/5\\a_8 = 1/4

There are 7 times the common difference between these two values, so if d is the common difference:

a_1 + 7*d = a_8\\\\3/5 + 7*d = 1/4\\\\7*d = 1/4 - 3/5 = (5 - 12)/20 = -7/20\\\\d = -1/20

Then the sum of the first 8 terms is given by:

3/5 + (3/5 - 1/20) + (3/5 - 2/20) + ... + (3/5 - 7/20)\\\\8*(3/5) - (1/20)*(1 + 2 + 3+ 4 + 5 + 6 + 7) = 3.4 = 34/10 = 17/5

So we conclude that the sum of the first 8 terms of the arithmetic sequence is 17/5.

If you want to learn more about arithmetic sequences:

brainly.com/question/6561461

#SPJ1

6 0
2 years ago
Question on the photo
IrinaVladis [17]

Answer:

C

Step-by-step explanation:

Since it is only addition and subtraction, you can rearrange the order of the equations. This is what the three eqautions will look like after the arrangement:

1.6z + 8.3 z = ? (9.9z)

6.2y - 5.1y = ? (1.1y)

4.3x + 5.5x = ? (9.8x)

Then you just add and subtract.

8 0
3 years ago
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