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azamat
2 years ago
9

If the car spends 2.5 hours going 35 miles per hour on the trip, how long does it spend going 55 miles per hour?

Mathematics
1 answer:
aleksklad [387]2 years ago
8 0
Simple problem, just use a proportion:
2.5/35 = X/55
Now cross multiply:
137.5 = 35X
X = 3.928
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Can you help me with theses problems plz.Also can you explain to me how to get it.Thank you
zysi [14]
1-14, You're just dividing. Like #1, -14÷2=-7 (negative fourteen divided by two, equals negative seven). A positive and a positive make a positive, a negative and a positive make a negative, a negative and a negative, make a positive. The word problems your also dividing, for example, #15, -40÷4=-10. Use the numbers that are given to you.
7 0
3 years ago
How do you solve #4 with a proportion
Irina-Kira [14]
The clothes weigh 14.77 kilograms.

Given:
Weight of suitcase = 50 pounds
Towels = 20% of weight
Shoes = 15% of weight
Clothes = 65% of weight

convert pounds to kilograms using proportion:

<u>pounds</u>        <u>2.2</u> = <u>50</u>
kilograms       1           x

2.2x = 50 ⇒ x = 50/2.2 ⇒ x = 22.73 kgs

Clothes : 22.73 kgs * 65% = 14.77 kgs
Towels  : 22.73 kgs * 20% =   4.55 kgs
Shoes   : 22.73 kgs * 15% =   3.41 kgs
8 0
3 years ago
Evaluate each expression if a=4, b=6 and c=3<br><br> 5b-6c
iragen [17]

Answer:

it is 12

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
I need help on questions 48 and 49.
xenn [34]
48. A square's sides are equal, so we know that its area is a number multiplied by itself, or squared. To find the length of one side, you must take the square root of its area, 156.25, which is 12.5. To find the square's perimeter (how much fence we need to go around the garden) you must multiply that side by 4, to get 50. Antonine has 40 ft already, so he only needs 10 more ft, and each ft costs 4.97. Our final answer is 10*4.97, or $49.70. 

49. The square root of 12 is about 3.46, plus 2 is our answer, about 5.46 cm.
8 0
3 years ago
The GRE is an entrance exam that many students are required to take in order to apply to graduate school. In 2014, the combined
zlopas [31]

The probability that a randomly selected score is greater than 334 will be 0.02275.

<h3>What is a normal distribution?</h3>

The Gaussian Distribution is another name for it. The most significant continuous probability distribution is this one. Because the curve resembles a bell, it is also known as a bell curve.

The z-score is a statistical evaluation of a value's correlation to the mean of a collection of values, expressed in terms of standard deviation.

The GRE is an entrance exam that many students are required to take in order to apply to graduate school. In 2014, the combined scores for the Verbal and Quantitative sections were approximately normally distributed with a mean of 310 and a standard deviation of 12.

Then the probability that a randomly selected score is greater than 334 will be

The z-score is given as

z = (x - μ)/σ

z = (334 - 310)/12

z = 24/12

z = 2

Then the probability will be

P(x > 334) = P(z > 2)

P(x > 334) = 1 - P(x<334)

P(x > 334) = 1 - 0.97725

P(x > 334) = 0.02275

More about the normal distribution link is given below.

brainly.com/question/12421652

#SPJ1

6 0
2 years ago
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