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IceJOKER [234]
3 years ago
11

Please help !! 10 pts!!!!

Mathematics
1 answer:
Cloud [144]3 years ago
3 0

Y = 8000/1000= 8

Y= 8*20

Y= 160

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What are the solutions to the system of equations?<br> y = 2x² + 6x - 10<br> \ y =<br> y = -x + 5
Akimi4 [234]

Answer:

x= 1.5, y= 3.5

or x= -5, y= 10

Step-by-step explanation:

Let's solve by substitution.

Label the two equations:

y= 2x² +6x -10 -----(1)

y= -x +5 -----(2)

Substitute (2) into (1):

2x² +6x -10= -x +5

2x² +6x +x -10 -5= 0

Simplify:

2x² +7x -15= 0

Factorise:

(2x -3)(x +5)= 0

2x -3= 0 or x +5= 0

2x= 3 or x= -5

x= 1.5

Now that we have found the value of x, we can find the value of y through substitution.

Substitute into (2):

y= -1.5 +5 or y= -(-5) +5

y= 3.5 or y= 10

Supplementary:

Do check out the following should you wish to learn more about solving quadratic equations!

  • brainly.com/question/12187987

3 0
2 years ago
HEELPPPPPP I NEED HELPPPP
lora16 [44]

Answer: the anser is

Step-by-step explanation:

9/24= 0.375 0.375x40=15

w=15 liters

8 0
3 years ago
Evaluate the following expression. 5^-3
Ulleksa [173]
5^-3 is 1/125

The negative in the exponent makes it so there is a 1 over the problem if there was no negative. When you have a negative in the exponent, the answer will be the reciprocal (opposite) of the question with no negative.
For example,

9^2 = 81

9^-2 = 1/81

6 0
3 years ago
Ben bought a digital camera for $90. The tax rate is 6%.
Inessa05 [86]
OK so basically you will times 90 by 6% which will give you $95.40
8 0
4 years ago
Read 2 more answers
What is the perimeter and area of this figure? Round to the nearest whole number.
Tpy6a [65]

Answer:

Step-by-step explanation:

This figure is quarter of a circle.

=> Perimeter = π/2r + 2r

=> 5π + 10

=> 5(3.14) + 10

=> 15.7 + 10

=> 26 units

Area = πr²/4

=> 3.14 x 100 / 4

=> 25 x 3.14

=> 79 sq. units

4 0
3 years ago
Read 2 more answers
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