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saul85 [17]
3 years ago
13

Plzzzzzzz help 20 points

Mathematics
2 answers:
SOVA2 [1]3 years ago
8 0

Answer:

8.15

Step-by-step explanation:

NISA [10]3 years ago
6 0

Answer:

8.15

Step-by-step explanation:

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Solve the system using elimination<br> y=-3x+6<br> y=x^2-4
ElenaW [278]
Mutiply first equation by -1 and add to 2nd

-y=3x-6
<u>y=x^2-4 +</u>
0=x^2+3x-10
factor like any equation
what 2 numbers multiply to -10 and add to 3
-2 and 5
0=(x-2)(x+5)
set to zero
x-2=0
x=2

x+5=0
x=-5
solve for y in each case

for x=2
y=2^2-4
y=4-4
y=0
(2,0) is a point

for x=-5
y=(-5)^2-4
y=25-4
y=21
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8 0
3 years ago
Evaluate the expression <br> [3(15+4)2 +2(20+5)2]0<br> 0<br> 5<br> 1<br> 2
Lostsunrise [7]

0, 5, 5, 1, 2

is evaluate

5 0
3 years ago
Solve this for me 15x+82= 20x +12<br>​
Lina20 [59]

Answer:

here

Step-by-step explanation:

15x-20x= -82+12=>

=> - 5x= -70=>

= x= 14

8 0
3 years ago
Which is the equation of a circle whose center is at the origin and that passes through the point (3, 5)?
xxTIMURxx [149]

Answer:

x² + y² = 34

Formula:

  • (x - h)² + (y - k)² = r²                    where (h, k) is the center

<u>Here find the radius using distance formula</u>:                → origin : (0, 0)

  • √(x2-x1)²+(y2-y1)²
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  • √9+25
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<u>Thus the equation of circle</u>:

  • (x - 0)² + (y - 0)² = (√34)²
  • (x - 0)² + (y - 0)² = 34
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7 0
3 years ago
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if the working age population is 250 million,170 million are unemployed and 9 million are unemployed, the unemployment rate is
Amiraneli [1.4K]

Answer: 5%

Step-by-step explanation:

9/179

4 0
3 years ago
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