1 year ago

Victor's class is going on a field trip.

Mathematics

1 answer:

Gnom [1K]1 year ago

8 0

Answer:

2180

Step-by-step explanation:

35x24=840

50x5=250

add those tou get 1090

multiply by 2

2180

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Last spring 12 birds ate 8 cups of birdseed in one month. If I am expecting 18 birds this month, how

elena55 [62]

Simplified Ratio: <u>3 : 2</u>

Birds / Cups

6 / 4

9 / 6

12 / 8

15 / 10

18 / 12

You need 12 cups of birdseed if you're expecting 18 birds this month.

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2 years ago

A car is traveling at a steady speed. It travels 1 3/4 miles in 2 1/3 minutes. How far will it travel in 45 minutes? In 1 hour?

mina [271]

Answer:

33.75 miles in 45 minutes,

45 miles in an hour

Step-by-step explanation:

45 minutes: 2 1/3= 7/3 ---> 7/3*3=7,

1 3/4= 7/4 ---> 7/4*3=5.25

car travels 5.25 miles for every 7 minutes,

45/7*5.25= 33.75 miles

1 hour (60 minutes):

using that the car travels 5.25 miles for every 7 minutes,

60/7*5.25= 45 miles

Hope that makes sense!

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2 years ago

What is the ratio 18 to 27 written as a fraction in lowest terms?

Studentka2010 [4]

$18:27=\dfrac{18}{27}=\dfrac{18:9}{27:9}=\dfrac{2}{3}=2:3$

7 0

3 years ago

Which expression represents the follow-

Varvara68 [4.7K]

Answer:

the sum of x and 5.

x + 5

the sum of is adding

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3 years ago

We gave a national verbal proficiency test that has a mean score of 500 with a standard deviation of 75. What raw score would co

charle [14.2K]

Answer:

519

Step-by-step explanation:

Let's assume that the scores for the national verbal proficiency test follow a normal distribution.

Mean score (μ) = 500

Standard deviation (σ) = 75

According to a Z-score table, the score for the 60th percentile is roughly z = 0.253

For any score "x", the z-score is given by:

$Z=\frac{X-\mu}{\sigma}$

For z = 2.53:

$0.253=\frac{X-500}{75}\\X=519$

The raw score to the 60th percentile is 519.

4 0

3 years ago