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zepelin [54]
3 years ago
14

Can somebody help me out with this please?

Mathematics
1 answer:
Crank3 years ago
4 0

Answer:

2 marbles

Step-by-step explanation:

Lana has 3 bags with x marbles in each bag totaling 12 marbles

3x=12

Divide by 3

3x/3 =12/3

x =4

Each bag has 4 marbles

Markus has 3 bags with y marbles totaling 18 marbles

3y =18

Divide each side by 3

3y/3 =18/3

y =6

Each bag has 6 marbles

6-4 =2

There are 2 more marbles in Markus' bags than in Lara's

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If there 8 boys for every 7 girls with 195 total, how many are boys?
Lilit [14]
B = boys   g = girls
.................................

b + g = 195        b = 195 - g

<u>b</u> = <u>8</u>
g    7

Substitute b for 195 - g in the 2nd equation:

<u>b</u> = <u>8</u>
g    7

<u>195 - g</u> = <u>8</u>
    g        7

Cross Multiply

8g = 7 . ( 195 - g )
8g = 1365 - 7g
8g + 7g = 1365
15g = 1365
g = <u>1365</u>
        15
g = 91

Substitute g for 91 in one of the equations:

b + g = 195
b + 91 = 195
b = 195 - 91
b = 104


S = 104 boys.
6 0
4 years ago
I need help..................
Viktor [21]

Answer:

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Step-by-step explanation:

7 0
3 years ago
Mr moore has saved the liscense plates from all his cars. He has nailed them to a wall in his garage. The wall is 5 meters long
QveST [7]

Answer: 270

Step-by-step explanation:

I might be wrong on this one, but the average license plate is 12 in by 6 in. One meter is around 3 feet. The dimensions of the wall are 9 feet by 15 feet.

Length wise, 15 license plates can fit on the wall, and bright wise, 18 can fit on the wall.

15 times 18 = 270

270 license plates is your answer

4 0
4 years ago
What is the inverse of the function f(x) = 4x + 8? h(x) = x – 2 h(x) = x + 2 h(x) = x – 2 h(x) = x + 2
melomori [17]
F(x) = 4x + 8

Find x in terms of f(x):-

4x = f(x) - 8
x = (f(x) - 8 )  /  4

replace x by h(x) and f(x) by x

h(x) = (x - 8 ) /4

I cant get any of the choices
3 0
3 years ago
Can someone pls help me with proving that (f)x^2-2|x| is increasing over [1;infinity] and decreasing over [0;1] then deduce that
dedylja [7]
Derivatives galore. Don't forget you might need to split the function because of the absolute value.

4 0
4 years ago
Read 2 more answers
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