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RideAnS [48]
3 years ago
12

When solving the equation 4(3x+2)-9=8x+7, Emily wrote 4(3x+2)=8x+16 as her first step. Which property justifies Emily's first st

ep
Mathematics
1 answer:
nataly862011 [7]3 years ago
6 0
The Addition Property of Equality justifies Emily's first step. She added 9 to both sides, canceling out the minus 9 while keeping the equation equal.
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Brainliest + points
Oksana_A [137]

Answer:

I know this one!!!

Step-by-step explanation:

Take the x value and multiply it by the y value to get a number. In this case, xy=60. That is the inverse equation. (15/8) times 32 is 60.

You can also take 60 and divide it by 32 to get (15/8)

4 0
3 years ago
Rewrite the expression 7x^2 + 7x - 42 as THREE factors where one of the factors is an integer value.
kondaur [170]
<h3>Answer:  7(x+3)(x-2)</h3>

========================================

Explanation:

First factor out the GCF 7

7x^2 + 7x - 42

7*x^2 + 7*x + 7*(-6)

7(x^2 + x - 6)

Now focus on factoring x^2+x-6

We need to find two numbers that multiply to -6 and add to 1. Those values are 3 and -2. That means x^2+x-6 factors to (x+3)(x-2).

The 7(x^2 + x - 6) then turns into 7(x+3)(x-2)

The factor out front, the "7", is the integer factor. The other factors (x+3) and (x-2) are binomial factors.

6 0
3 years ago
Sheila has 12 1/2 pounds of potato salad. She wants to divide the potato salad into containers, each of which holds 2 1/4 pounds
NeX [460]

Answer:

6 containers needed

Step-by-step explanation:

Given

Total = 12\frac{1}{2}\ lb ----- Size

Container = 2\frac{1}{4}\ lb ----- Size

Required

Determine the number of containers needed

This question illustrates the knowledge of fraction and division.

To get the number of containers needed, we simply divide the total size by the size of the container as follows;

Number = Total/Container

Number = 12\frac{1}{2}/2\frac{1}{4}

Convert to improper fractions

Number = \frac{25}{2}/\frac{9}{4}

Number = \frac{25}{2}*\frac{4}{9}

Number = \frac{100}{18}

Number = 5.5555556

Number = 6 --- Approximated

4 0
3 years ago
Select whether the number is rational, irrational, or imaginary. 1/4
rjkz [21]
Because 1/4 is a fractional number, it is also a ratio which means it is Rational. :)
7 0
3 years ago
Read 2 more answers
The radius of a circle is 12 cm. Find its area in terms of pie. ​
SCORPION-xisa [38]

Answer:A≈452.39cm

Step-by-step explanation:

5 0
3 years ago
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