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oksano4ka [1.4K]
3 years ago
13

19-(3-5b)....,.......​

Mathematics
1 answer:
Serjik [45]3 years ago
6 0

Answer:

Step-by-step explanation:

19(-3+5b)

-57+95b

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Six out of 10 kids prefer swimming to hiking. How many kids out of 100 prefer swimming?
eimsori [14]
6/10 = 0.6

0.6 × 100 = 60

Answer = B.60

~Aamira~

~Hope this helped~
8 0
3 years ago
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Suppose the leader of a camping trip is putting together a trail mix
wel

Answer:

8 pounds of peanuts, 6 pounds of raisins and 6 pounds of chocolate chips

Step-by-step explanation:

Let x be the number of pounds of peanuts and y be the number of pounds of raisins and chocolate chips.

Peanuts cost $2 per pound, then x pounds cost $2x.

Raisins cost $2.50 per pound, then y pounds cost $2.50y.

Chocolate chips cost $4 per pound, then y pounds cost $4y.

In total, x+y+y=20 and those 20 pounds cost

2x+2.50y+4y=20·2.75.

Solve the system of two equations:

\left \{ {{x+2y=20} \\ \\ \\ \\ \\ \\ \atop {2x+6.5y=55}} \right.

From the first equation:

x=20-2y

Substitute x into the second equation:

2(20-2y)+6.5y=55\\ \\40-4y+6.5y=55\\ \\2.5y=15\\ \\25y=150\\ \\y=6\\ \\x=20-2\cdot 6=8

8 0
3 years ago
3 out of every 5 students in Mrs. Wilson's class have brown eyes. There are 20 students in Mrs. Wilson's class. How many of the
Alex787 [66]

Answer:

12

Step-by-step explanation:

So there is 3:5 right, so 20 divided by 5 equals 4, there are four 5's in 20.  Then 4 multiplied by 3 equals 12. So there are 12 students that has BROWN EYES.

<em>Hope I Helped You :)</em>

7 0
2 years ago
A cube's edge lengths are each 5 inches. A rectangular prism's length and width are also 5 inches, but its height is 7
algol [13]

The rectangular prism is 187.5 - 125 = 62.5 cu.inches greater than the volume of cube.

<h3>What is Volume?</h3>

Volume is defined as the space occupied by a three dimensional figure.

It is given that

A cube's edge lengths are each 5 inches

A rectangular prism's length and width are also 5 inches, but its height is \rm 7\dfrac{1}{2}

The volume of the cube is given by side * side * side

Volume of cube = 5 *5 * 5 = 125 cu. inches

The volume of cuboid = length * width * height

<h3>Volume of Cuboid = 5  * 5 * 15/2</h3>

Volume of Cuboid = 187.5 cu.inches.

Therefore the rectangular prism is 187.5 - 125 = 62.5 cu.inches greater than the volume of cube.

To know more about Volume

brainly.com/question/1578538

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2 years ago
The cost of oranges in a grocery store is directly proportional to the number of oranges purchased. jerri paid $2.52 for 6 orang
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I think its A because the amount for one orange is .42

7 0
3 years ago
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