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Harrizon [31]
3 years ago
8

(X+7)(X-7) what is the answer

Mathematics
1 answer:
kondaur [170]3 years ago
5 0

Answer:

X^2 - 49 .

Step-by-step explanation:

(X+7)(X-7)

= X(X-7) + 7(X-7)

= X^2 - 7X + 7X - 49

= X^2 - 49 .

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Helppppp this is timed
telo118 [61]

Answer: In order to convert Celsius to Fahrenheit, you will need to use this formula: F = 9/5C + 32. Therefore, you will need to solve for C or substitute values and solve in that manner. To find Fahrenheit temperature for -20 degrees Celsius, you can just plug it into the formula

Step-by-step explanation:

6 0
3 years ago
The length of a rectangle field if 7/5 of its width. if the perimeter of the field is 240 meters, what are the length and width
trasher [3.6K]
Perimeter of any figure is all its sides summed up

for a rectangle, with two equal pairs, that means, length + length + width + width or   2length + 2width, or  2(length + width)

but we know the length is 7/5 the width

width = w
perimeter = P


\bf P=2\left(\frac{7}{5}w +w \right)\qquad P=240\implies 240=2\left(\frac{7}{5}w +w \right)
\\\\\\
120=\frac{7}{5}w +w\impliedby \textit{let's multiply both sides by 5}
\\\\\\
600=7w+5w\implies 600=12w\implies \cfrac{600}{12}=w

and the length is 7/5 of that
7 0
4 years ago
The perimeter of the scalene triangle is 88 cm.Which equation can be used to find the value of b if side a measures 12.5 cm?
Mariulka [41]

Answer:

A scalene triangle is one whose sides are all a different length. So there is no way you can find the length of b when you are only given the length of a and the perimeter.

Step-by-step explanation:

hopes it help :)

5 0
3 years ago
Miss Wilson has spent $6 on breakfast using her debit card 5 mornings per week for the past 8 weeks. What is the change in Miss
zvonat [6]

Answer:

Step-by-step explanation:

240

3 0
3 years ago
Read 2 more answers
Which figure represents the image of parallelogram LMNP after a reflection across the line y = x? (see image)
loris [4]

When you reflect a point across the line y = x, the x-coordinate and y-coordinate change places. This gives you such reflection rule:

(x,y)\rightarrow (y,x).

From the diagram:

L(3,1), M(4,3), N(5,3) and P(4,1).

Using the reflection rule, you can find coordinates of image points:

L'(1,3), M'(3,4), N'(3,5) and P'(1,4).

As you can see, these are coordinates of vertices of the figure C.

Answer: correct choice is option 3 - figure C.

8 0
4 years ago
Read 2 more answers
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