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charle [14.2K]
3 years ago
5

Simplify (-5) + (-2) - (-7) - (+9)

Mathematics
1 answer:
Alecsey [184]3 years ago
3 0
-5-2+7-9 = -9

- and - make a plus :)
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The line y=15x Intersex the quadratic function y=15x^2 at two points. what are the coordinates of the two points of intersection
REY [17]

Answer:

D

Step-by-step explanation:

we can set up the equation as 15x = 15x^2

factoring we get

15x(x-1) = 0

So the solutions are when x are 0 and 1

this gives the coordinates

(0,0) and (1,15)

8 0
3 years ago
What is the answer to <br> 4 - 2 x = 3
jekas [21]

4-2x = 3

-2x = 3-4

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x = 1/2

5 0
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What is m∠DHG? Enter your answer in the box.
LenaWriter [7]

the 2 equations given are vertical angles which mean they would equal the same.

Set the two equations to equal each other to solve for x:

6(x-2) = 3x+30

Simplify the left side:

6x-12 = 3x+30

Add 12 to eac side:

6x = 3x+42

Subtract 3x from each side"

3x = 42

Divide both sides by 3:

X = 42/3

X = 14


Now you know X, replace x with 14 in the equation for DHG:

DHG = 6(x-2)

6(14-2)

Simplify:

6(12)

Multiply:

72

Angle DHG is 72 degrees.

6 0
3 years ago
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Please tell me the answer.. it will mean and help me a lot and give you more points :)
vovikov84 [41]

Step-by-step explanation:

12500 divided by 0.26= liters

5 0
3 years ago
Determine the number of solutions for each quadratic.
DiKsa [7]

Answer:

1. Technically 2, but might be 0 in your teacher's opinion.

2. 1

Step-by-step explanation:

Solving problem one.

So I don't know if you have learned about imaginary numbers, but if you have, then you would end up with two answers if you plugged in the quadratic formula.

If you haven't learned about imaginary numbers, then I would say your best option would be to write 'No real solution' since there are technically 2 solutions.

Solving problem two.

Turns out this quadratic has a special property and it's actually a square of one equation. You can find out by just factoring the equation.

It's (3x-2)^2.  Since it's squared, that means that only 2/3 would work as x in this equation.

4 0
3 years ago
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