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torisob [31]
3 years ago
15

I don’t get this one

Mathematics
2 answers:
kvasek [131]3 years ago
5 0
Hiya!

When there are 2 negatives together, the (-) sign changes into a (+) sign.

 -7 - (-2.5) ⇒ -7 + 2.5

Your answer is D. -7 + 2.5

(-7 + 2.5 = -5.5)
fomenos3 years ago
4 0
Hi!

Two negatives make a positive, so this can be rewritten as
-7+2.5

The answer is D. -7+2.5

Hope this helps! :)
-Peredhel
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Can someone help me with my homework I really don’t get it:(
stepladder [879]

Answer: 60 hours

(I'll help you with the first one only because you need to learn this)

Step-by-step explanation: 36 divided by 3 is 12 and 720 divided by 12 is 60

7 0
3 years ago
I don’t understand this
svet-max [94.6K]

The answer is 1/20. This is probability. <u><em>probability is the chance of you picking a certain thing</em></u>. for example: You have 3 blue marbles, 6 red marbles, and 4 purple marbles. the probability of pick a blue marble is 3/13. A red would be 6/13, and a purple would be 4/13.

So what this is asking is what are the chances that something will happen over something will not happen. the said that "the probability that an event will not happen is P(E') = 19/20. if you are having a lot of trouble with this, try removing the events with something like marbles (Something you have done before) this tends to make it a little easier to read.

5 0
3 years ago
I don’t know what the answer to this question is , help
ipn [44]

Answer:

(4, 0)

Step-by-step explanation:

given the 2 equations

y = x - 4 → (1)

- 4x - 6y = - 16 → (2)

substitute y = x - 4 into (2)

- 4x - 6(x - 4) = - 16

- 4x - 6x + 24 = - 16

- 10x + 24 = - 16 ( subtract 24 from both sides )

- 10x = - 40 ( divide both sides by - 10 )

x = 4

substitute x = 4 into (1) for corresponding value of y

y = 4 - 4 = 0

solution is (4, 0)

3 0
3 years ago
A driver of a car stopped at a gas station to fill up his gas tank. He looked at his watch, and the time read exactly 3:40 p.m.
mylen [45]

Answer:

2.675

Step-by-step explanation:

3 0
3 years ago
On his first day of school, Kareem found the high temperature in degrees Fahrenheit to be 76.1°. He plans to use the function to
wolverine [178]
The function for conversions from Fahrenheit to Celsius is:

Celsius = (Fahrenheit - 32) x 5/9 

C(76.1) = (76.1 - 32) x 5/9
             = (44.1) x 5/9
             =  24.5

Therefore, 76.1 degrees Fahrenheit = 24.5 degrees Celsius. 
5 0
3 years ago
Read 2 more answers
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