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Allushta [10]
2 years ago
11

PLZ HELP :) here's the problem !​

Mathematics
1 answer:
Pavlova-9 [17]2 years ago
3 0

Answer: I think the answer is 34.. sorry if I’m wrong

Step-by-step explanation:

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Scott burned 20 calories per minute jogging for x minutes and 5 calories per minute for biking for y minutes. He spent a total o
stiv31 [10]

Answer:

x = 112

Step-by-step explanation:

We can create two equations 1. one that calculates calories burned and 2.another that calculates minutes:

20*x + 5*y = 1200

x + y = 120

Then we can solve for x

x = 120 - y

then we can plug that into the top equation:

20(120 - y) + 5y = 1200

divide by 5:

4(120 - y) + y = 240

distribute:

480 - 4y + y = 240

and then do all that combining like factors what not and simplify and solve:

480 - 3y = 240

-3y = -240

y = 8

NOW WE CAN JUST PLUG IN THE ANSWER FOR Y TO FIND X

8+x =120

x = 112

7 0
2 years ago
I = Prt
Olegator [25]

Answer:

r=3.5\%

Step-by-step explanation:

we know that

The simple interest formula is equal to

I=P(rt)

where

I is the Final Interest Value

P is the Principal amount of money to be invested

r is the rate of interest  

t is Number of Time Periods

in this problem we have

t=5\ years\\ P=\$1,200\\ I=\$210\\r=?

substitute in the formula above

210=1,200(5r)

solve for r

r=210/6,000

r=0.035

convert to percentage (multiply by 100)

r=3.5\%

6 0
3 years ago
Which ratios are equivalent to 3 parts silver paint to 4 parts green paint?
Zigmanuir [339]

Answer:

6/8, 9/12

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Margaret is reading a book. The number of pages she has left to read is 276−35d276−35d , where d represents the number of days s
mamaluj [8]
276 - 35d

276 = total pages
35 = pages read per day
35D = number of pages she has read during D days
8 0
3 years ago
Read 2 more answers
PLs help...............
lina2011 [118]

Answer:

your answer is a. x = 11

Step-by-step explanation:

Move all terms that don't contain x to the right side and solve.

7 0
2 years ago
Read 2 more answers
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