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Kruka [31]
3 years ago
8

Solve using any method! 5. x2 + 7x - 8 = 0

Mathematics
2 answers:
Eduardwww [97]3 years ago
8 0
The answer :

86

For x2 + 7x - 8 = 0
Digiron [165]3 years ago
5 0

Answer:

86

Step-by-step explanation:

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13. The center of a circle is at (7,-2) and the
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A

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Solve the system of equations by graphing. <br><br> x+y=3<br> y=2x−15
Stella [2.4K]

Hey!

Hope this helps...

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

x + y = 3

x = 3 - y


y = 2x - 15

y = 2(3 - y) - 15

y = 6 - 2y - 15

y = -2y - 9

3y = -9

y = -3


y = 2x - 15

-3 = 2x - 15

-2x = -12

x = 6


So...

The answer is: (6, -3)

4 0
3 years ago
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What kind of number is -5? Is it rational or something like that?
babymother [125]
The number -5 is anything but natural number.
It is an integer (Z) ,a rational number (Q) and a real number (R) .

4 0
3 years ago
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marshall27 [118]
The distance is (0, 1.3)
7 0
3 years ago
A water wheel has a radius measuring between 13 feet and 24 feet. The wheel is able to turn 7π9 radians from its starting positi
madam [21]

Answer:

31.76 ft and 58.64 ft

Step-by-step explanation:

The radius measures between 13 feet and 24 feet.

The wheel is able to turn 7π/9 radians before getting stuck.

We need to find the range of distances that the wheel could spin before getting stuck. That is, the length of arc.

Length of an arc is given as:

L = \frac{\theta}{2\pi} * 2\pi r

where θ = central angle = 7π/9 radians

r = radius of the circle

Therefore, for 13 feet:

L = \frac{7\pi}{18 \pi} * 2 * \pi * 13\\\\L = 31.76 ft

For 24 feet:

L = \frac{7\pi}{18 \pi} * 2 * \pi * 24\\\\L = 58.64 ft

The wheel could spin between 31.76 ft and 58.64 ft before getting stuck.

4 0
3 years ago
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