suppose 7 out of 30 students are going on a ski trip.predict the number of students out of 150 that are going on the ski trip

Answers

Answer 1

Answer: 35 students. 150 divided by 30 is 5 that means you'll multiply 7 by 5 and getting 35.

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A rectangular pool is 20 feet wide and 50 feet long. A deck used for sunning surrounds the pool. The deck is the same width all the way around the pool. The total area of the deck is 456 square feet. How wide is the walkway?

Answers

deck=456
area of pool=legnth times width=20 times 50=1000

the area of the deck is made up of 4 rectangles and 4 squares, the rectangles' areas come in pairs
areas are
area of deck= 2(20w)+4(w^2)+2(50w)d

456=2(20w)+4(w^2)+2(50w)

distribute

456=40w+4w^2+100w

add like terms

456=4w^2+140w

divide everybody by 4

114=w^2+35w

subtract 114 from both sides

0=w^2+35w-114

find what 2 numbers multiply to get 114 and add to get 35 and factor

-3 and 38

0=(w-3)(w+38)

set each to zero

w-3=0

w=3

w+38=0

w=-38

false since measures in real life cannot be negative

therfor width of walkway=3ft

Answer: 3 feet

Step-by-step explanation: this basically sum up the verifed answer

Please help with mathematics

Answers

Number 2 would be A.4/1/2
Number 1 would be C.
Number 3 would be .2/2
Number 4 would be D because you subtract.
Number 5 would be 22. x=22. 22 divided by 10 equals 2 1/5.
Hope this helps!:)

First question:-

Order from least to smallest.

9,3, 9 1/3, 37/4, 9.34

Now, let us get all the numbers in the same format.

37/4 = 9 1/4

9 1/4 = 9.25

9.34

9.3 = 9.30

9 1/3 = 9.33

Now order them.

Final answer: 37/4, 9.3, 9 1/3, 9.34 DONE!

Second question:-

6 1/2 + 5 1/5 = 6 5/10 + 5 2/10 = 11 7/10

11 7/10 + 2 4/5 = 11 7/10 + 2 8/10 = 13 15/10 = 14 1/2

14.5 = n + 10

Now solve for n

14.5 - 10 = n + 10
-10

4.5 = n

Final answer: n = 4 1/2

Third question:-

Reciprocity of 1 1/2

first, we make the mixed number an improper fraction.

1 1/2 = 1*2 = 2 + 1 = 3

3/2 the reciprocal of it is 2/3

Final answer: 2/3

Fourth question:-

solve the proportion.

2 2/5 minutes to run 1.5 miles.

2.4/1.5 = 1/x

Cross multiply. 2.4*x = 1.5*1

2.4x = 1.5
-------------
2.4

x = 2.4/1.5

Final answer: x= 1 3/5

Fifth question:-

x/10 = 2 2/10 <--------- i made sure the denom's are the same!

22/10 = x/10

x = 22

Final answer: x = 22

YES...WE HAVE OUR ANSWERS...AND THIS TOOK ME FOREVER. :D

Write an expression that equals 24. Include an exponent.

Answers

Does the answer require only an exponent?

Can the sum of two mixed numbers be equal to 2, explain why or why not

Answers

no because a mixed number is a whole number with a fraction and the smallest whole number is one so 1 and a fraction pulse and a fraction will equal more than 2

Do 20/10 and 22/11 because they will have 2

How many decameters are there in 14 meters

Answers

In 1 meter is 10 decameters. In 14 meters=140 decameters

8 (x-1) = 3 (3x-2)
Please help, its due tomorrow!

Answers

$8\left( x-1 \right) =3\left( 3x-2 \right) \n \n 8x-8=9x-6\n \n 9x-8x=-8+6\n \n x=-2$

$8 (x-1) = 3 (3x-2)\n8x-8=9x-6\n8x-9x=-6+8\n-x=2\nx=-2$

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How fast in miles per an hour is a bus going if it travels 36 miles in 45 minutes?