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PIT_PIT [208]
3 years ago
7

The nickles and dimes had a value of $5.75. if there were 70 coins in all, how many were nickles?

Mathematics
1 answer:
Murrr4er [49]3 years ago
5 0

Answer:

25

Step-by-step explanation:

If all 70 were nickels, the value would be $3.50 Since that is 2.25 less, that means it needs 45 more 5 cents. Therefore, you would replace 5 of the nickels with dimes. This means there are 25 nickels and 45 dimes.

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Write the equation of a line parallel to y= 2x + 2 that passes through the point (-1,-7). Show your work.
oksian1 [2.3K]

Answer:

\large\boxed{y=2x-5}

Step-by-step explanation:

The slope-intercept form of an equation of a line:

y=mx+b

Parallel lines have the same slope. Therefore if given line is

y=2x+2

then the slope of our line is m=2.

We have the equation:

y=2x+b

The line passes through (-1, -7). Put the coordinsted pf the point to the equation:

-7=2(-1)+b

-7=-2+b          <em>add 2 to both sides</em>

-5=b\to b=-5

Finally:

y=2x-5

6 0
3 years ago
Question 5
12345 [234]

Answer:

6

Step-by-step explanation:

8 0
3 years ago
a triangular flower bed needs a thin metal border all the way around it. The sides are 7 feet, 6 feet, and 9 feet long.
kotegsom [21]
Excuse my awful triangle drawing skills, haha..
So essentially you need to find the perimeter which is done by adding the lengths of the sides.. this gives you 22ft.
Then for part b you need to convert 22ft to yards which gives you 7.3 yards.
Since you can only buy a whole number of yards, you'll actually need 8 yards.
So if the boarder is $8.75 per yard, and you need 8 yards, how much would it cost?
Hope this was helpful.

7 0
3 years ago
What are the solutions to the system of equations? y=2x^2−6x+3 y=2x+3
adoni [48]

Answer:

Step-by-step explanation:

y=2x²-6x+3

y=2x+3

2x²-6x+3=2x+3

2x²-6x+3-2x-3=0

2x²-8x=0

2x(x-4)=0

x=0,4

y=0+3=3

and y=2(4)+3=11

so solutions are (0,3) and (4,11)

5 0
2 years ago
Someone please help me
Inessa [10]

Answer:

X is equal to 32

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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