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jeyben [28]
2 years ago
13

Solve 15 and 21, will give BRAINLIST!!

Mathematics
2 answers:
Stolb23 [73]2 years ago
5 0
The answer for 1 is 40/2=20
xeze [42]2 years ago
4 0

Answer:

Step-by-step explanation:

<h2>4/x=2/10</h2>

cross multiplication:

4*10=2*x

40=2x

x=40/2=20

<h2>w/2 = 4.5/6.8</h2>

6.8w=2(4.5)

6.8w=9

w=9/6.8=1.32352941

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Please help I need to turn this in today.
Bogdan [553]

Answer:

C

Step-by-step explanation:

If you have a Ti-84 series calculator, press "stat" then "Edit..." and then fill in the data table values for x and y in two lists. Then press "2nd" and "mode" to quit. Now press "stat" again and right arrow over to "calc" and press down until you find "ExpReg" and set the "Xlist" and "Ylist" that you used and you will get C as the answer. Another way to do this is to manually substitute values into all 4 equations, which is boring.

8 0
1 year ago
Describe how to find the sums -4+2 and -4+(-2) on a number line.
kifflom [539]

For -4+2, plot -4, then move to the right 2 spaces. You should land on -2.

For -4+(-2), plot -4 then move the left 2 spaces. You should land on -6.

3 0
2 years ago
Read 2 more answers
Please help me I will mark u as brainlist​
vitfil [10]

Answer:

What kind of question is it?

5 0
2 years ago
How are rational numbers written as decimals
Alja [10]

Answer:

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Step-by-step explanation:

a integer can be written as fraction simply by giving it a denominator so any integer is a rational number

8 0
3 years ago
Which statement about the linear factors and zeros of a quadratic function is always
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