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Romashka-Z-Leto [24]
2 years ago
8

A bag contains 120 marbles. Some are red and the rest are black. There are 19 red marbles for every black marble. How many red m

arbles are in the bag?
Mathematics
1 answer:
Alexus [3.1K]2 years ago
6 0

Answer:

6

Step-by-step explanation:

brainest plz

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PLS HELP.!!!!!!!!!!!
Bezzdna [24]

Answer:

35040

Step-by-step explanation:

3.48(104)+0.24(103)

=35040

7 0
3 years ago
Read 2 more answers
The ratio of x to y is 1/2 . If the ratio of x + 2 to y + 1 is 2/3 , then what is the value of x?​
Natali5045456 [20]

Answer:

x =4

Step-by-step explanation:

x/y = 1/2

(x + 2) / (y + 1) = 2/3

Cross multiply the first equation

2x = y

Put that value for y into the second equation.

(x + 2) / (2x + 1) = 2/3              Cross multiply

3(x + 2) = 2(2x + 1)                   Remove the brackets.

3x + 6 = 4x + 2                        Subtract 3x from both sides

6 = 4x - 3x + 2

6 = x + 2                                  Subtract 2 from both sides

6-2 = x

x = 4

5 0
3 years ago
1. Josefina ha pintado 2/4 de una pared y su hermano<br>  ¿Cuánto han pintado entre los dos?
Irina18 [472]

Answer  67+67=6886

Step-by-step explanation:

8 0
3 years ago
What is the area of a rectangle with a length of (x - 5) and width of (x + 8)?
dlinn [17]

Answer:

a = x² + 3x - 40

Step-by-step explanation:

a = l * w

a = (x - 5)(x + 8)

a = x(x + 8) - 5(x + 8)

a = (x² + 8x) + (- 5x - 40)

a = x² + 3x - 40

3 0
3 years ago
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adelina 88 [10]
3. you cannot simplify √30
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2 years ago
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