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3 years ago

What is the answer to -5+4=-17

Mathematics

2 answers:

Eduardwww [97]3 years ago

8 0

Answer:

-16

Step-by-step explanation:

-5 + 4 = -17 + 5 - 4

0 = -16

Answer: -16

defon3 years ago

4 0

Answer:

-16

Step-by-step explanation:

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To travel 105 miles, it takes Sue, riding a moped, 3 hours less time than it takes Doreen to travel 64 miles riding a bicycle. S

Volgvan

Let t=time Doreen travels; let r=rate of Doreen

RATE * TIME = DIST.
Sue | r+13 t-3 105
Doreen | r t 64

Now solve the system:
(r+13)(t-3)=105
r*t=64

 $r= \frac{64}{t} 
\\
\\(\frac{64}{t} +13)(t-3)=105 
\\
\\64- \frac{192} {t}+13t-39-105=0
\\
\\13t- \frac{192} {t}-80=0
\\
\\ 13t^2-80t-192=0
\\
\\t_{1,2}= \frac{80\pm \sqrt{(-80)^2-4\times13(-192)} }{2\times13}= \frac{80\pm128}{26} 
\\
\\t=\frac{80+128}{26} =8
\\
\\r=\frac{64}{t} =\frac{64}{8} =8$ 

Doreen: rate = 8 mph, time = 8 hours
Sue: rate = 21 mph, time = 5 hours

8 0

3 years ago

How do you simply a fraction

padilas [110]

Answer:

Step-by-step explanation:

Depending on what type of fraction you're trying to simplify there are different ways.

One subtraction example would be:

6-3/7-4 you minus the numerator and denominator to get 3/3 since we have 3 on both top and bottom our simplified answer would be 1

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2 years ago

Read 2 more answers

In the given figure x = 145°. What theorem can be used to prove the lines p and q are parallel?

Gemiola [76]

C alternate exterior angles converse theorem

When two lines are parallel the alternate exterior angles are congruent

4 0

2 years ago

Make n the subject of the formula: M=3n

natta225 [31]

Divide each side by 3. ----- n=M/3 .

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3 years ago

Rewrite this percent as a decimal: 80%

ella [17]

Answer:

.80

0.80

Step-by-step explanation:

80 is out of 100, which is other words is .80 or 0.80

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3 years ago