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djverab [1.8K]
3 years ago
5

Add the following numbers. (-4) + (-9) =

Mathematics
1 answer:
soldi70 [24.7K]3 years ago
6 0

Answer:

-13

Step-by-step explanation:

Adding a negative means that you subtract the number as + (-) = -

This means that the equation is -4-9=-13.

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Simplify.<br> -2(y+3)+4y
stiks02 [169]
The correct answer is 2y-6 let me know if you want to know how I got that
6 0
2 years ago
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PLEASE HELP! GIVING BRAINLIEST! DUE SOON PLEASE HELP!
Mrrafil [7]

Answer:

4-9 = 4+(-9)

-6-7 = -6+(-7)

-4-(-9) = -4 + 9

6-(-7) = 6+7

Step-by-step explanation:

Double negatives means a positive and one positive and one negative is a negative.

Please give brainliest. I am working hard to get it.

7 0
2 years ago
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Solve for w 4w - 9 = 7
bagirrra123 [75]

Answer:

w = 4

Step-by-step explanation:

1. Isolate the variable by adding 9 to both sides

--> 4w = 16

2. Divide each side by 4

--> w = 4

-If this answer helps you, please remember to vote it as 'brainliest answer' :)

Thank you!

6 0
3 years ago
Help please with algebra problem
Strike441 [17]
Number of weekend minutes used: x
Number of weekday minutes used: y

This month Nick was billed for 643 minutes:
(1) x+y=643

The charge for these minutes was $35.44
Telephone company charges $0.04 per minute for weekend calls (x)
and $0.08 per minute for calls made on weekdays (y)
(2) 0.04x+0.08y=35.44

We have a system of 2 equations and 2 unkowns:
(1) x+y=643
(2) 0.04x+0.08y=35.44

Using the method of substitution
Isolating x from the first equation:
(1) x+y-y=643-y
(3) x=643-y

Replacing x by 643-y in the second equation
(2) 0.04x+0.08y=35.44
0.04(643-y)+0.08y=35.44
25.72-0.04y+0.08y=35.44
0.04y+25.72=35.44

Solving for y:
0.04y+25.72-25.72=35.44-25.72
0.04y=9.72

Dividing both sides of the equation by 0.04:
0.04y/0.04=9.72/0.04
y=243

Replacing y by 243 in the equation (3)
(3) x=643-y
x=643-243
x=400


Answers:
The number of weekends minutes used was 400
The number of weekdays minutes used was 243
6 0
2 years ago
I will give brainiest to whoever answers correctly !! There are two parts to this question A and B
laila [671]

Answer:

Step-by-step explanation:

5 1/2%=0.024

3500 x 0.025 = 87.5

She paid 87.5$ dollars for the use of money

due date is after 6 months so

3500 times 6 = 21000

21000 times 0.025 = 525

She paid 525$ dollars on the due date

4 0
3 years ago
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