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Alla [95]
3 years ago
10

Is this a true proportion? 15. 22:88::10: 40

Mathematics
1 answer:
USPshnik [31]3 years ago
5 0
Yes that is a true proportion
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Evaluate the expression when a=3 and b=4<br><br> 2<br> 2a+ b =
damaskus [11]

The answer you are looking for could either be 16 or 40.  To solve the equation, you would follow the steps of PEMDAS. Since the 2 above the equation is an exponent, you'd first solve there.  

Fill in "a" and "b", the equation will now say 2^2 * 3 + 4 = ?. Assuming that the exponent is meant to go with the 2 alone, 2 * 2 = 4. This leaves the equation to say 4 * 3 + 4 = ? Multiply 3 and 4 to get 12, then add 4 to get 16.  

OR  

Fill in "a" and "b". This time, we're assuming that the exponent is going with 2 * 3 (originally 2a). Multiply 2 and 3 to get 6, then square 6 to get 36. Finally, add 4 to 36 to get 40.  

I'm not quite sure where the exponent was meant to go, but I hope this helps!

3 0
3 years ago
What is --- <br> 8x + 2y = 30<br> 7x + 2y = 24
kolezko [41]

Answer:

x = 6 y = -9

Step-by-step explanation:

8x +2y = 30

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8(6)

48 + 2y =30

-48. -48

2y = -18

÷2. ÷2

y = -9

5 0
3 years ago
Write 1.417x10^2 in standard notation please hurry .thank you
stellarik [79]

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The standard notation would be 141.7

Step-by-step explanation:

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3 years ago
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We have 500 grams of a 10% salt solution. How many grams of water must be added to dulite the solution to form a 4% solution. Sh
lys-0071 [83]
Hmm, one way is this
there's 500 times 0.10 or 50 grams of salt in the water
if we want to make 50 grams=4% of everything, how much water do we need to add

50=4% of all
50=0.04 of all
divide both sides by 0.04
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so
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minus 500 both sides
what=750

750 grams of water
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4 years ago
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Convert m= -1 and (9,4) to slope intercept form
Inga [223]

Answer:

Write in slope-intercept form,

y=mx+b. y=−x+13

Step-by-step explanation:

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3 years ago
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