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3 years ago

8

A bag contains green tokens and black tokens. There are 6 green tokens in the bag. The ratio of green tokens to black tokens is

2 : 7. Find the number of black tokens in the bag.

2 answers:

gizmo_the_mogwai [7]3 years ago

8 0

There are 21 black tokens in the bag.

Shalnov [3]3 years ago

4 0

Answer:

21 Black tokens are in the bag

Step-by-step explanation:

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Two mechanics worked on a car. The first mechanic charged $55 per hour, and the second charged $45 per hour. The mechanics worke

lesya [120]

Answer:

A worked 20 hours and B worked 15 hours.

Step-by-step explanation:

Given:

Mechanic A hourly rate = $55

Mechanic B hourly rate = $45

Total charged = $1775

Let's assume Mechanic A worked 'A' amount of hours and Mechanic B worked 'B' amount of hours, then

Step 1:

First equation: A + B = 35

Second equation: 55xA + 45xB = 1775

Step 2:

First equation can be written as: A = 35 - B

Step 3: Replace value of A in second equation

Second equation: 55x(35-B) + 45B = 1775

: 1925 - 55B + 45B = 1775

: (1925 - 1775 )/10 = B

: B = 15 hours

A worked = 35 - 15

= 20 hours

8 0

3 years ago

Trong những phát biểu sau, có bao nhiêu phát biểu là mệnh đề?

Tamiku [17]

Answer:

có hai phát biểu là mệnh đề, đó là câu 2 và câu 4

Step-by-step explanation:

7 0

3 years ago

When the temperature of an object increases, what happens to the kinetic energy of the particles in the object?

valentina_108 [34]

C.) It increases ............

8 0

3 years ago

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4cm<br> 10cm<br> Base=<br> Height=<br> Area=

Anton [14]

Answer:

Step-by-step explanation:

If you're talking about a square, then the area would be 40.

If you're talking about a triangle, then the area would be 20.

8 0

3 years ago

HELP ME OUT PLEASE I RLLY NEED IT ASAP. ):

LenaWriter [7]

(a) Slope is rise over run, or change in y over change in x.

1 -> 3 ( $\frac{y_{2}-y_{1}}{x_{2}-x_{1}} = \frac{4 - -8}{-1 - -5} = \frac{4 + 8}{-1 +5}= \frac{12}{4} =\frac{12}{4}$ )

2 -> 3 ( $\frac{y_{2}-y_{1}}{x_{2}-x_{1}} = \frac{1 - 7}{0 - 2} = \frac{-6}{- 2} =\frac{6}{2}$ )

3 -> -1/3 ( $\frac{y_{2}-y_{1}}{x_{2}-x_{1}} = \frac{-7 - -3}{6 - -6}= \frac{-7+3}{6+6}=\frac{-4}{12}=-\frac{1}{3}$ )

(b) If a line is parallel, the slopes will be the same. If they are perpendicular, the slopes will be are negative reciprocals of one another. If they are neither, then their slopes don't match up in any way.

1 & 2 -> Parallel

1 & 3 -> Perpendicular

2 & 3 -> Perpendicular

Note - Since 1 & 2 are parallel, then both 1 and 2 will be perpendicular to 3!

Have a nice day!

If this is not what you are looking for - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

5 0

3 years ago

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