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Andrej [43]
4 years ago
6

Determine if the proportion is true

Mathematics
2 answers:
gogolik [260]4 years ago
8 0

Answer:

False Proportions

Step-by-step explanation:

2/5 does not equal 5/10

Converting both of them to a percent,

2/5 = 40%

5/10 = 50%

A clear difference of percentage. Another convertion,

2/5 = 0.4

5/10 = 0.5

Another clear difference.

Inessa [10]4 years ago
6 0
Not true. 2/5 is equivalent to 4/10
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Q =3x2+5x-2 R = 2 – x2 S = 2x + 5 Find Q – [R + S] Show all of the steps.
matrenka [14]

Q=3x^2+5x-2\\R=2-x^2\\S=2x+5\\\\Q-[R+S]=(3x^2+5x-2)-[(2-x^2)+(2x+5)]\\\\=(3x^2+5x-2)-(2-x^2+2x+5)\\\\=(3x^2+5x-2)-[-x^2+2x+(2+5)]\\\\=(3x^2+5x-2)-(-x^2+2x+7)\\\\=3x^2+5x-2-(-x^2)-2x-7\\\\=3x^2+5x-2+x^2-2x-7\\\\=(3x^2+x^2)+(5x-2x)+(-2-7)\\\\=\boxed{4x^2+3x-9}

5 0
3 years ago
Jerry has $558 to spend on dining room chairs. if each chair costs $58, does he have enough to purchase nine chairs
netineya [11]

Answer:

No because the chairs would have to be the price of $62.00

Step-by-step explanation:

divide 558 by 9

so if the chairs had been 62 dollars then he would have enough

4 0
3 years ago
Please I need help ASAP!!!
lesantik [10]

Answer:

First answer.

Step-by-step explanation:

This is called the Arc length, here is the formula:

Arc length = (angle/360)*(2Pi*radius)

So,

(45/360)*(2*3.14*4)

= 3.14

SO Pi !!!!!

4 0
3 years ago
Which number line correctly shows 4.5 - 2.5?
il63 [147K]

Answer:

number one

Step-by-step explanation:

if if 4.5 - 2.5 the answer is 2 that means the answer is number one

5 0
3 years ago
Read 2 more answers
800 is 10 times as much as
Anon25 [30]
80 because 800= 10 x 8
3 0
3 years ago
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