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mario62 [17]
3 years ago
15

What must be added to 3x-7 to make x^2 +4x-1 ?

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
7 0
<span> x²+4x-1 - (3x - 7) = x² + 4x - 1 - 3x +7 = x² + x + 6

</span>x² + x + 6 should be added to 3x - 7  to make  x²+4x-1.
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I’ll fail if I don’t get this right pls help
son4ous [18]

Step-by-step explanation:

In order to find the number of solutions, we have to expand both sides out first.

3(x - 2) + 7x =  \frac{1}{2} (6x - 2)

First, expand 3(x-2), which will obtain 3x-6.

Next, expand (1/2)(6x-2), which gives 3x - 1.

The result at this point should be as shown below:

3x  - 6 + 7x = 3x - 1

Now, we would shift all x terms to the left and all number terms to the right.

3x + 7x - 3x =  - 1 + 6

After simplifying, the final equation would be:

7x = 5

This is a linear equation and it has one solution.

x =  \frac{5}{7}

7 0
3 years ago
Read 2 more answers
Shane decided to dig his garden.On the first fine day,he dug 1/3 of it.On the second day he dug only 1/4 of it before it started
jeka94

Answer:

I think 1/4

Step-by-step explanation:

So, you first should find a common denominator so you can add the fractions together.

So, 1/4 + 1/3 + 1/6 becomes 3/12+4/12+2/12.

Add that up, you get 9/12.

Simplify.

9/12 = 3/4

3/4 is how much is dug out. 4/4 - 3/4 is 1/4. That's how much for digging is left, I believe.

6 0
3 years ago
Kyla measured the weight of a bunch of bananas as 1,100 grams using the scale.
vitfil [10]
B, because thats 50 grams either direction of the given weight.
4 0
3 years ago
Read 2 more answers
How much fabric is needed to<br><br><br>create the sail below?<br>14ft by 9 ft
olga55 [171]

Answer:

126 ft

Step-by-step explanation:

Calculate the area (length x height)

14 x 9 = 126

4 0
3 years ago
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. Jill is 48 5/8 inches tall. Lei is 47.5 inches tall. What is the difference in their heights? a. 0.125 inches b. 1.08 inches c
Roman55 [17]

Explanation:

First we write the fraction as a decimal. 5/8 is 0.625, so the height of Jill is 48.625 inches.

The difference is:

48.625-47.5=1.125

Answer:

c. 1.125 inches

5 0
1 year ago
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