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Nastasia [14]
3 years ago
6

How do i expand brackets in quadratic form because i need help with it

Mathematics
1 answer:
xenn [34]3 years ago
5 0

To expand a bracket means to multiply each term in the bracket by the expression outside the bracket. For example, in the expression 3 ( m + 7 ) , multiply both. 3 ( m + 7 ) = 3 × m + 3 × 7 = 3 m + 21 .

I hope it help

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1. Mila spends $71.05 at the craft store.
marshall27 [118]

Answer:

$3.4

Step-by-step explanation:

Total amount spent by Mila equals $71.05

She bought 5 yards of fabric at $12.85 per yard. Hence, the total amount she spent on fabric is 12.85 × 5 = $64.25

It should be noted that since she bought only 2 kinds of things, this mean that Amount spent of fabric + Amount spent on thread = $71.05

Amount spent on thread = $71.05 - Amount spent on fabrics.

Amount spent on thread = $71.05 - $64.25 = $6.8

This is the total amount spent on thread.

But the question asks amount spent on one spool of thread. Since 2 spools would cost $6.8, one spool would cost $6.8 ÷ 2 = $3.4

7 0
3 years ago
The perimeter of a square is 100. The side length is represented by 2x+3. Solve for x.
aliina [53]

Answer:

4×side length=perimeter of the square

4×(2x+3) = 100

2x+3 = 25

2x=25-3=22

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3 0
3 years ago
The sum of the first 65 odd, positive integers is?
Aleksandr [31]
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7 0
4 years ago
Write as a Fraction 65%
Licemer1 [7]

Answer:

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Step-by-step explanation:

5 0
4 years ago
Read 2 more answers
If m is the midpoint of segment JK, JM equals 7x minus 32, and MK equals 89 minus 4x, what is MK?
KonstantinChe [14]

Step-by-step explanation:

Imagine this segment, given that m is the midpoint of segment JK...

      J________M________K

   JM = 7x-32        MK = 89 - 4x (given)

If m is the midpoint, then JM and MK are the same lengths (equal to each other). We can use that to first find what <em>x</em> is.

7x -32 = 89 - 4x\\

Steps to find x (we have to get x by itself):

7x - 32 + 4x = 89 - 4x  +4x

11x -32 = 89

11x -32 +32 = 89 +32

11x = 121

\frac{11x}{11} = \frac{121}{11}

x=11 (we haven't found the answer yet! we only found x)

Now that we found x, we can find segment MK. Now we know that:

MK = 89 - 4x  

x= 11

Let's plug x into the equation:

MK = 89 - 4(11)\\MK = 89- (44)\\MK = 45

Answer: MK= 45

4 0
3 years ago
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