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Pani-rosa [81]
3 years ago
10

Please help me with this question 7th grade

Mathematics
2 answers:
bonufazy [111]3 years ago
4 0
The correct answer is C...
Valentin [98]3 years ago
3 0
The answer is C. This is because the red paint must be proportional to the yellow paint, and the proportion given to us is 6/8 (or 6:8 as a ratio). We notice that when simplified, 6/8=3/4, meaning that for every 3 parts of red, there are 4 parts of yellow. By multiplying 3/4 by a certain number of parts for yellow, we'll get the proportionate parts for red.

For example, if you wanted to find out the proportionate part of red for 16 parts of yellow, you would do 3/4*16, which is 12, so that would be 12 parts of red.

:)
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A see-saw is 25 feet long with a fulcrum in the middle of the board. If a 60 lb. child sits three feet from the fulcrum, what is
My name is Ann [436]

Answer:

14.4 lb

Step-by-step explanation:

In a see-saw in equilibrium, the torque generated by one side needs to be the same generated in the other side. The torque is calculated by the product between the mass and the distance to the center of the see-saw.

The torque generated by the child is:

T1 = 60 * 3 = 180 lb*feet

So, the torque generated by the weight needs to be higher than T1 in order to lift the child.

The lowest mass is calculated when the mass is in the maximum distance, that is, 12.5 feet from the center.

So, we have that:

T2 = 180 = mass * 12.5

mass = 180/12.5 = 14.4 lb

So the lowest weight is 14.4 lb

4 0
3 years ago
A pencil costs .27 and a pen costs .32. You buy six pencils and the total cost is 4.18 How many pens did you buy?
skelet666 [1.2K]

Answer:

8 pens

Step-by-step explanation:

<h2><u>Finding the number of pens bought </u></h2>

pencil costs 0.27

pen costs 0.32

6 * pencils + x pens = 4.18

6 * 0.27 + x * 0.32 = 4.18

1.62 + 0.32x = 4.18

0.32x = 4.18 - 1.62

0.32x = 2.56

x = 2.56/0.32

x = 8

<u>hence 8 pens were bought </u>

8 0
3 years ago
I need help can yall help me​
Marta_Voda [28]

Answer:

Step-by-step explanation:

3 0
3 years ago
What is the area of this
larisa86 [58]
Area of a triangle is base x height divide by 2
26x9=234
234 divide by 2 is 117
5 0
2 years ago
Find the product <br> (r-9)(r+4)
AVprozaik [17]

Answer:

2r - 36

Step-by-step explanation:

r x r = 2r

-9 x 4 = -36

7 0
3 years ago
Read 2 more answers
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