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Papessa [141]
3 years ago
12

A bag contains 150 marbles. Some are blue, and the rest are white. There are 21 blue marbles for every 4 white marbles. How many

blue marbles are in the bag? Explain your reasoning.
Mathematics
1 answer:
Soloha48 [4]3 years ago
5 0

Answer:

126

Step-by-step explanation:

21 + 4 = 25  (blue plus white marbles)

150/25 = 6 (all the marbles divided by how many we know are white and blue)

21 x 6 = 126  

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Zeke was born in August 1991 Jake was born in May 1993 how much more older is Zeke Than Jake give your answer in years and month
V125BC [204]

Answer:

2 years and 3 months

Step-by-step explanation: 1991 to 1992=1yrs

1992 to 1993=2 yrs and May to August=3 months

3 0
3 years ago
For each equation given below, write ONE related equation. a) x + 5 = 18 b) 66x =330
GenaCL600 [577]

Answer:

x = 13 ; x = 5

Step-by-step explanation:

The easiest related equation to get is simply solving for x:

a) x + 5 = 18

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Subtract 5 from both sides:

x + 5 (-5) = 18 (-5)

x = 18 - 5

x = 13*

b) 66x = 330

Isolate the variable, x. Divide 66 from both sides of the equation:

(66x)/66 = (330)/66

x = 330/66

x = 5*

*Note: An equation simply is a expression that has an equal sign. This means that as long as there is an equal sign, it counts as an equation.

~

4 0
3 years ago
Jayden has been reading a 275275275-page book for English class. On average, he has read about 101010 pages in 151515 minutes (\
maxonik [38]
First let's define variables:
 r: reading
 s: skimming
 We write the system of equations that adapts to the problem:
 r + s = 275
 (15/10) r + (10/15) s = 355
 We solve the system of equations:
 r = 206
 s = 69
 Note: see attached image for system solution.
 Answer: 
 Jayden had to skim 69 pages through

8 0
3 years ago
Can some one explain to me what substitution is and how to use it to solve equations?
Yakvenalex [24]

Answer:

Step-by-step explanation:

Say that your equation is 2x+4=8, x=2

you would plug in the 2 where your x is so, 2(2) +4=8

then you'd solve regularly.

Hope my answer has helped you!

5 0
3 years ago
Which of the following shapes are polygons with more than 444 sides?
Leviafan [203]
Hexagon and pentagon
6 0
3 years ago
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