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Fittoniya [83]
3 years ago
5

Write the proportion and solve:

Mathematics
2 answers:
masya89 [10]3 years ago
8 0

Answer:

810 minutes

13 hours 30 minutes

Step-by-step explanation:

Let the unknown value be x

5\:miles = 45 \: minutes\\90\:miles = x\:minutes

Sole the proportion for x ; Cross Multiply

5\times \:x =90 \times 45\\\\5x\: = 4050

Divide both sides of the equation by 5

\frac{5x}{5} = \frac{4050}{5} \\\\x = 810 \:minutes =\\13 \:hours \:30\:minutes

Crazy boy [7]3 years ago
7 0

Answer:

810 minutes

Step-by-step explanation:

90÷5=18

18×45=810

It will take him 810 mins.

I hope this helped!!

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3 years ago
Luis bought two pieces of wax to make candles. One piece weighed 3.49 kg, and the other weighed 4.71 kg. If wax costs $1.80 per
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(3.49+4.71)1.80=cost

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8 0
3 years ago
Can i please get help with this question?
Westkost [7]
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8 0
3 years ago
Read 2 more answers
Nachelle is 1.45 meters tall. At 11 a.m., she measures the length of a tree's shadow to be 23.05 meters. She stands 18.9 meters
GREYUIT [131]

Step-by-step explanation:

this creates 2 similar triangles.

that means all angles are the same. and all the side lengths of one triangle correlate to the corresponding side lengths of the other triangle by the same multiplication factor.

her shadow is 23.05 - 18.9 = 4.15 m long.

the factor between the shadow lengths is then

4.15 × f = 23.05

f = 23.05 / 4.15 = 5.554216867...

the same factor now applies to the relation of the heights :

1.45 × 5.554216867... = 8.053614458... m

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5 0
2 years ago
Find x if AB = 9, BC = 2x - 5,<br> and AC = x + 9
Oxana [17]

Answer:

x = 5

Step-by-step explanation:

Using the fact that line segments AB and BC are parts of the whole line segment AC, we can write the following equation:

AB + BC = AC

Now, using the given values, we can substitute in for the equation and solve for x:

AB + BC = AC

9 + 2x - 5 = x + 9

2x + 4 = x + 9

x = 5

Thus, we have found that for these sets of equations for these line segments, our value for x should be 5.

Cheers.

5 0
3 years ago
Read 2 more answers
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