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8090 [49]
3 years ago
8

X² - 7 what does equal to

Mathematics
1 answer:
andrezito [222]3 years ago
3 0

Answer:

X-7

Step-by-step explanation:

X the second power is x

X-7 would be the next step and that should be the answer.

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What is the equation of a line that has an x-intercept of -4 and a y-intercept of 8 ?
podryga [215]

Answer:

y=2/-1+8

Step-by-step explanation:

  • -4= (-4,0) -4=x1 0=y1, 8= (0,8) 0=x2 8=y2
  • formula is, y2-y1/x2-x1
  • 8-0/0-4=8/-4=4/-2= 2/-1
  • 2/-1 is the slope or (m), use (-4,0) or (0,8) i used (0,8) because its easier.
  • (0,8), 0=x1 8=y1
  • formula is y-y1=m(x-x1)
  • y-8=2/-1(x-0) ---->distribute
  • y-8=2/-1x-0 --->get y alone

          +8          +8

  • so the answer is y=2/-1+8

7 0
3 years ago
Lola ride her bike for 7/10 of an hour on saturday and 3/5 of an hour on sunday. how much longer did she ride her bike on saturd
OverLord2011 [107]
3/5=6/10
7/10-6/10=1/10
1/10 or 6 minutes longer
6 0
3 years ago
Alma wants to buy socks. She has $11.00 and the socks cost $3.00 per pair. How many pairs of socks can Alma buy? How much money
Llana [10]

Answer:

She can buy 3 pairs for $9.00 with $2.00 extra.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Plz help....<br> Ma teacher's Gon kill me.....lol
erik [133]
Answers:

1. 74856 + 1489
= 76345

2. 42000/5
= 8400

3. 142100/10
= 14210

4. 2500 + (8-5)
2500 + 3
= 2503

5. 385 + (29 - 9)
385 + 20
= 405

6. 1780 - 643
= 1137

7. 4 x 2 + 30 / 5
4 x 2 + 6
8 + 6
= 14

8. 65743 - 754
= 64989
4 0
2 years ago
Estimate the perimeter of the figure to the nearest whole number.
Paha777 [63]

Answer:

The perimeter (to the nearest integer) is 9.

Step-by-step explanation:

The upper half of this figure is a triangle with height 3 and base 6.  If we divide this vertically we get two congruent triangles of height 3 and base 3.  Using the Pythagorean Theorem we find the length of the diagonal of one of these small triangles:  (diagonal)^2 = 3^2 + 3^2, or (diagonal)^2 = 2*3^2.

Therefore the diagonal length is (diagonal) = 3√2, and thus the total length of the uppermost two sides of this figure is 6√2.

The lower half of the figure has the shape of a trapezoid.  Its base is 4.  Both to the left and to the right of the vertical centerline of this trapezoid is a triangle of base 1 and height 3; we need to find the length of the diagonal of one such triangle.  Using the Pythagorean Theorem, we get

(diagonal)^2 = 1^2 + 3^2, or 1 + 9, or 10.  Thus, the length of each diagonal is √10, and so two diagonals comes to 2√10.

Then the perimeter consists of the sum 2√10 + 4 + 6√2.

which, when done on a calculator, comes to 9.48.  We must round this off to the nearest whole number, obtaining the final result 9.

4 0
3 years ago
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