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Gala2k [10]
3 years ago
12

Beverley has quarters and dimes in her pocket. She has 21 coins with a total value of $3.00. How many of each type of coin does

she have
Mathematics
1 answer:
forsale [732]3 years ago
8 0

Answer:

6 quarters and 15 dimes

Step-by-step explanation:

6 quarters = $1.50

15 dimes = $1.50

6 quarters + 15 dimes = $3.00

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Emily designed a robot that could climb down steps. She drew a graph to show the results from a test of her new robot. The graph
mamaluj [8]
The answer is A.) \frac{-1}{10}x+15 

To find this answer the first thing we need to do is look at the equation of a straight line: y=mx+b

What I did first was look at b. b represents the y-intercept. By looking at the graph we can tell that the line crosses the y-axis at (0,15), so the y- intercept is 15. So our answer should at least have b=15. Using this we can go ahead and eliminate answers B & C 

Next we look at the slope (m). One way you can figure out slope is using the rise over run method. Since this line has a negative slope our rise should be a negative number. So, the only answer that should be left is A.) \frac{-1}{10}x+15 
7 0
3 years ago
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Please help I’ll give brainliest!!!
solong [7]

Answer:

the 3 one

Step-by-step explanation:

3 0
3 years ago
A polar bear swims 390 meters at a in 150 seconds, what is the speed of the polar bear?
topjm [15]
The answer is 2.6 m/s

The speed (v) is distance (d) through time (t).
v = d/t

We know:
d = 390 m
t = 150 s

v = d/t
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4 0
3 years ago
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Solve the equation for x. <br><br> 2(5x + 3) = 26
Aleksandr [31]

Answer: x=2

Step-by-step explanation:

2(5x+3)=26

Distribute the 2

10x+6=26

Subtract 6 from both sides

10x=20

Divide both sides by 10

x=2

5 0
3 years ago
WHAT'S THE ERROR? A student says 3(n- 5) is equal to 3n - 5. What's<br>the error?​
inn [45]

Answer:

The student incorrectly used the Distributive property!

Step-by-step explanation:

The Distributive property says a(b+c)=ab+ac

In this problem the answer SHOULD be 3n-15, however the <u>student forgot to distribute the 3 to the -5</u>!

8 0
3 years ago
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