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vlabodo [156]
3 years ago
6

Please help asap....​

Mathematics
1 answer:
Anton [14]3 years ago
4 0

Answer:

x=-15, x=-5

Step-by-step explanation:

x^2+20x+82-7=7-7

x^2+20x+75=0

(x+15)(x+5)=0

x+15=0

x=-15

x+5=0

x=-5

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Of 100 staff member of school 48 drank coffee 25 drank both tea and coffee and every one drinks either coffee or tea . How staff
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27

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3 years ago
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5 0
3 years ago
Read 2 more answers
By which angle measures can the square be rotated so it maps onto itself?
Amanda [17]

The <em><u>correct answers</u></em> are:

90°, 180° and 270°

Explanation:

Squares have rotational symmetry at 90°.  This can be found by dividing the number of degrees in a circle, 360, by the number of sides, 4:

360/4 = 90

This means that at all multiples of 90, the square will rotate onto itself.  This means that 90, 180 and 270 are all correct.

3 0
3 years ago
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