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11111nata11111 [884]

2 years ago

15

Melissa, Ravi, and Eric sent a total of 154 txt msg. Melissa sent 10 more msg than Eric. Ravi sent 4 times as many msg as Eric h

ow many messsges did they each send

1 answer:

romanna [79]2 years ago

8 0

Answer:

Eric=154 txt msg

Melissa=164 txt msg

Ravi=615 txt msg

I hope this helped :)

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If 8 men on a construction crew make up 40% percent of the entire crew, how many people are in the crew?

pochemuha

Answer:

Step-by-step explanation:

Since 40% of the crew are men, which means n. 40=8 n=8/. 40 n=20 total number of crew 20 - 8=12 are women

6 0

2 years ago

Read 2 more answers

Chris has 18 marbles and Kevin has 15 marbles. Chris gave half of his marbles to Kevin.

Helen [10]

Ok so…
The answer is: 15 more marbles
Because
18 divided by 2 is 9
15+9=24
Now Chris has 9
Kevin has 24
24-9=15
Hope this helps:)

5 0

2 years ago

Wendy took a trip from city A to city B, a distance of 220 mi. She traveled part of the way by bus, which arrived at the train s

Sphinxa [80]

Answer:

1.72 hours on the train.

Step-by-step explanation:

The distance between the two cities is 220 miles. Therefore the sum of the bus and train distances is 220 miles. Let x be the distance by train and y the distance by bus: x + y = 220

Bus speed was 30 mph and train speed was 85 mph. The whole trip was 5 1/2 hours, that is 5.5 hours.

We have to, the bus distance would be equal to:

y = 260 - x

speed equals distance over time, like so:

v = d / t; if we rearrange for time

t = d / v, we can do another equality, since we know that the total time is 5.5 hours

5.5 = x / 85 + (260 - x) / 30; reorganizing we have left that:

(30 * x + 85 * 260 - 85x) / 85 * 30 = 5.5

Solving:

-55 * = 2550 * 5.5 - 22100

x = 146.81

146.81 miles would be the train distance.

To find the time, we divide by the speed of the train which is 85 mph:

146.81 / 85 = 1.72 h

We buy, with the equation the time:

146.81 / 85 + (260 - 146.81) / 30 = 5.5 hours

Therefore, Wendy takes 1.72 hours on the train.

6 0

2 years ago

Simplify : (√x + √y ) (√x − √y) (x + y)(x2 + y2)

Ivan

$Solution, \mathrm{Expand}\::\left(\sqrt{x}+\sqrt{y}\right)\left(\sqrt{x}-\sqrt{y}\right)\left(x+y\right)\left(x^2+y^2\right):\quad :x^4-:y^4$

$Steps:$

$\mathrm{Expand}\:\left(\sqrt{x}+\sqrt{y}\right)\left(\sqrt{x}-\sqrt{y}\right):\quad x-y, =\left(x-y\right)\left(x+y\right)\left(x^2+y^2\right)$

$\mathrm{Expand}\:\left(x-y\right)\left(x+y\right):\quad x^2-y^2, =:\left(x^2-y^2\right)\left(x^2+y^2\right)$

$\mathrm{Expand}\:\left(x^2-y^2\right)\left(x^2+y^2\right):\quad x^4-y^4, =:\left(x^4-y^4\right)$

$\mathrm{Expand}\::\left(x^4-y^4\right):\quad :x^4-:y^4, =:x^4-:y^4$

The correct answer is <u><em> $x^4-y^4$ </em></u>

Hope this helps!!!

4 0

3 years ago

You have 45 pencils. Five out of every 9 are yellow pencils and the rest are brown. How many pencils are yellow?

Aleks [24]

Five out of every nine pencils are yellow. You can make a fraction for this:

$\frac{5}{9}$

You have 45 pencils. To find the amount of yellow pencils, multiply the fraction by 45. First set up the equation:

$\frac{5}{9} \times 45$

Make 45 as a fraction so that you'll be multiplying fractions together. It will also make it easier.

To write a whole number as a fraction, <em>ALWAYS</em> make the whole number the denominator and 1 as the numerator.

$45 \rightarrow \frac{45}{1}$

Here is the "new equation":

$\frac{5}{9} \times \frac{45}{1}$

Multiply. You multiply the numerators and denominators together.

$\frac{5}{9} \times \frac{45}{1} =\frac{225}{9} = 25$

That means <u>25</u> pencils are yellow

5 0

2 years ago

Read 2 more answers