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Ksju [112]
3 years ago
12

Last night, the temperature fell from 0°F to Negative 13 and one-fifth°F in4 and two-fifths hours. Alan calculated the average t

emperature change per hour.
Negative 13 and one-fifth divided by 4 and two-fifths = Negative StartFraction 66 over 5 EndFraction divided by StartFraction 22 over 5 EndFraction = Negative StartFraction 66 over 5 EndFraction (StartFraction 22 over 5 EndFraction) = Negative StartFraction 1,452 over 25 EndFraction
Alan solved the problem, but when he checked the answer by estimating, it didn’t seem right. What error did he make?
Alan converted the mixed number to the wrong improper fraction.
He did not use the correct reciprocal fraction.
He did not change the division problem to multiplication.
He added the numerators and denominators instead of multiplying.
Mathematics
2 answers:
Sever21 [200]3 years ago
7 0

Answer:

the real answer is b

Step-by-step explanation:

hope this helps:^

USPshnik [31]3 years ago
5 0
Negative 3.14
Times that by Pi which is 3.14 and then multiply by the base number and you will get the correct answer
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Which expression is equivalent to 2 to the 2nd power times 2 divided by 2 to the 4th power
Ivan

Answer:

The choice B.

{2}^{ - 1}

Step-by-step explanation:

{2}^{2}  \times  \frac{2}{ {2}^{4} }  =  \frac{2}{ {2}^{2} }  =  \frac{1}{2}  =  {2}^{ - 1}

I hope I helped you^_^

3 0
3 years ago
mario earned a raise that increased his hourly pay rate from $8 to $10 what was the percent increase in marios hourly pay rate
kogti [31]
8 / 10 = 1/5 = 0.2
 Mario's hourly pay rate increased by <span>$</span>0.2
3 0
3 years ago
Read 2 more answers
M is directly proportional to r squared
Nesterboy [21]

Answer:

m=84

r:m = 1:7

therefore when r= 1 then M=14

r = 12 \\ m = 7 \times 12 \\ m = 84

I think that's how you do it

5 0
2 years ago
2. I earned $9. I bought 4 candy bars for $0.85 each. How much money do I
quester [9]

Answer:

A

Step-by-step explanation:

4 x $0.85= $3.40  

$9-$3.40= $5.60

5 0
3 years ago
Read 2 more answers
Round to the nearest tenth, I will give brainlyest PLEASE
BabaBlast [244]

1. cos B= a/x

x= 11/cos 37°

x= 13.77

2. tan A= a/x

x= 4/tan 41°

x= 4.60

3. sin B = x/c

x= sin 37° × 10.3

x= 6.20

4. tan A= a/b

tan A= 4/13

A= tan-1(0.31)

A= 17°6'10"

5. cos A= b/c

cos A= 12/13

A= cos -¹(0.92)

A= 22°37'12"

6. tan B= a/b

tan B= 3/3

tan B= 1

B= tan‐¹(1)

B= 45°

7 0
2 years ago
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