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GaryK [48]
3 years ago
12

Please answer ASAP:She had 2 quarters, 4 dimes, 3 nickels and 2 pennies. The total cost of the bread $0.82. She promised to make

sure she had exactly 1 coin remaining after purchase.
Mathematics
1 answer:
Mandarinka [93]3 years ago
7 0

Answer:

You would have 1 quarter

Step-by-step explanation:

4 dimes=40 3 nickels=15 2 pennies 1 quarter =25

so you would add 40+15×25+2 and that would give you 82 and the last coin you left with is 1 quarter

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Melissa got 18 out of 20 on a math quiz. Tom got 85% on the quiz. Whose mark was greater?
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Answer:

tom =  \frac{85}{100}  \times 20 \\  = 17 \: questions

Melissa had a greater mark.

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3 years ago
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A factory machine produces kilograms of chocolate every minutes. At what rate does the machine produce chocolate?
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The question says kilograms every minutes, so it's C or D. The answers on A and B same
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Find the area between the curves x=-2,x=3,y=4x,y=x-5
mixas84 [53]
Those are all lines...

So the x interval is from -2 to 3, because of x=-2 and x=3

The upper line is y(u)=4x and the lower line is y(l)=x-5

So the area between the two lines is:

A=⌠y(u)-y(l) dx

A=⌠4x-x+5 dx

A=⌠3x+5 dx

A=[3x^2/2+5x]

A=[(3x^2+10x)/2], x=[-2,3]

A=(1/2)(27+30-(12-20))

A=(1/2)(57+8)

A=(1/2)(65)

A=32.5 u^2
5 0
3 years ago
Factorize (2u+3u)(u+v)-2u+3v​
Stolb23 [73]

Answer:

Step-by-step explanation:

(2u+3u)(u+v)-2u+3v

=2u(u+v)+3u(u+v)-2u+3v

=2u^2+2uv+3u^2+3uv-2u+3v

=5u^2+5uv-2u+3v

7 0
3 years ago
At what point will 3y=4x-6 and 8x-6y=-30 intercept
tester [92]

Answer:

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Step-by-step explanation:

we have

3y=4x-6

isolate the variable y

Divide by 3 both sides

y=\frac{4}{3}x-\frac{6}{3}

simplify

y=\frac{4}{3}x-2 -----> equation A

8x-6y=-30

Isolate the variable y

6y=8x+30

Divide by 6 both sides

y=\frac{8}{6}x-\frac{30}{6}

simplify

y=\frac{4}{3}x-5 -----> equation B

Compare equation A and equation B

The slopes are the same and the y-intercepts are different

Remember that

If two lines has the same slope, then the lines are parallel

therefore

In this problem line A and line B are parallel lines

The system of equations has no solution, because the lines don't intercept

3 0
3 years ago
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