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4 years ago

12

Solve this equation -56=8r

1 answer:

VladimirAG [237]4 years ago

6 0

R = -56/8 = -7
basically the r was being multiplied by 8, so I reverses that by dividing.

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Scientific notation<br>Express this number in standard form.<br>1.304 x 107 = ?

xz_007 [3.2K]

Answer:

139.528

Step-by-step explanation:

multiply

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4 years ago

A train traveling nonstop to its destination is able to make the trip at an average speed of 70 miles per hour. On the return tr

larisa86 [58]

Answer:

Return trip travel time: 7h

Step-by-step explanation:

Let d be the distance.

Index 1 refers to initial trip, index 2 refers to the return trip.

v1=70mi/h

v2=40mi/h

t2=t1+3h, or t1=t2-3h (travel times)

d=v1×t1=v2×t2

v1×(t2-3)=v2×t2

v1 t2 -3 v1=v2 t2

v1 t2 - v2 t2=3 v1

t2(v1-v2)=3v1

t2=3v1/(v1-v2)

Or

t2=3×70/(70-40)=3×70/30=7h

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3 years ago

Find the number that makes the ratio equivalent to 8:3.<br> :30 <br> pleas just say the number

Blizzard [7]

Answer:

32 : 12 is the second equivalent ratio. = 48 : 18 is the third equivalent ratio. Therefore, the three equivalent ratios of 8 : 3 are 16 : 6, 32 : 12 and 48 : 18

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3 years ago

A gardener made a scale drawing of a lawn with a scale factor of 1:4 The dimensions of her drawing are 15 inches long by 10 inch

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3 years ago

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What is 45% in a decimal

Grace [21]

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0.45

Step-by-step explanation:

Percent is per 100, so the fraction is 45/100.

The decimal is the numerator, but you need to swoop 2 times.

Therefore, the answer is 0.45.

7 0

4 years ago

Read 2 more answers