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leonid [27]
3 years ago
14

PLSSS HELP MARKING BRAINLIST QUESTION BELOW

Mathematics
1 answer:
Nadya [2.5K]3 years ago
5 0

Answer:

The third answer. ( John's boat was farther from the deck at the beginning but Roberta's boat traveled more quickly)

Step-by-step explanation:

You already know that in the beginning John's boat begins 20 miles  from the dock. Now you need to find Roberta! When each boat begins from the dock, it means when x=0. So lets insert that! y= 6(0)+15. You get 15. Now you know that its either the 3rd or 4th answer.  The second piece of info you have for John is that it is 45 miles from the dock after 5 hours. Again, in the beginning it started with 20 miles. 45-20= 25 miles TRAVELED in 5 hours.  For Roberta, we need to insert 5 in the equation for x. y=6(5)+15. You get: 45 again! But... Roberta started at 15 miles. So 45-15 is 30 miles. She traveled 30 miles in 5 hours. The only answer that is matching to our problem solving is the third answer. Hope this helps!

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A chemical balance needs to weigh 237g using weights of 50g, 20g, 10g and 1g. How many of each weight is needed?
Delicious77 [7]

The required number of weights used in chemical balance to weigh 237g is 4,1,1,7 respectively.

What is mathematical expression?

A mathematical expression expression in mathematical is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Here, it is given that :

A chemical balance needs to weigh 237g using weights of 50g, 20g, 10g and 1g.

Now, let us find the number of weights for each weight type :

For 50g weight the maximum number of weights needed will be 4 that is :

50g x 4 = 200g

Now, for 20g weight the maximum number of weights needed will be 1 that is :

20g x 1 = 20g

Now, for 10g weight the maximum number of weights needed will be 1 that is :

10g x 1 = 10g

Now, for 1g weight the maximum number of weights needed will be 7 that is :

1g x 7 = 7g

Adding all the weights we get :

200g + 20g + 10g + 7g = 237g;

which is the required weight and the number of weights used is 4,1,1,7 respectively.

Read more about weights at:

brainly.com/question/16177712

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4 0
1 year ago
Read 2 more answers
The figure shows the graph of f(x) as a solid curve and the graph of g(x) as a dashed curve which equation describes the relatio
Olenka [21]

Answer:

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Step-by-step explanation:

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3 years ago
WILL MARK YOU BRAINLIEST ANSWER WHAT YOU CAN PLS
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Answer:

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E'(-1;1)

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3

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the scale factor is 4

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8 0
3 years ago
Three times the number of red marbles in a bag is the same as 33 1/3 percent of the number of red marbles in the bag increased b
sattari [20]

Answer:

24 red marbles

Step-by-step explanation:

Ok, why not let  R = number of red marbles.

The first sentence says:

3 * R =  (33 and 1/3) % * R  + 64

or

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3 years ago
Xyz-qrs and the scale factor from xyz to qrs is 2/5. what is the length of side rs?
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Answer:

RS = 10

Step-by-step explanation:

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YZ = 25

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RS = 25*⅖

RS = 10

3 0
2 years ago
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