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Zinaida [17]
2 years ago
13

Find the slope of each line

Mathematics
1 answer:
Klio2033 [76]2 years ago
6 0

Answer:

Positive, Negative, undefined, positive

Step-by-step explanation:

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Jack has twice as many dimes as quarters. If the total value of the coins is $6.30, how many dimes does he have?
ycow [4]

Answer:

Number of dimes = 28

Step-by-step explanation:

Given that:

Worth of coins = $6.30 = 6.30 * 100 = 630 cents

Let,

x be the number of dimes

y be the number of quarters

According to given statement;

x = 2y    Eqn 1

10x+25y = 630    Eqn 2

Putting x = 2y in Eqn 2

10(2y) + 25y = 630

20y + 25y = 630

45y = 630

Dividing both sides by 45

\frac{45y}{45}=\frac{630}{45}\\y=14

Putting y=14 in Eqn 1

x = 2(14)

x = 28

Hence,

Number of dimes = 28

4 0
3 years ago
What is the value of y
mixas84 [53]
840? Im not sure im sorry
8 0
3 years ago
Read 2 more answers
Write the following percent as a fraction in the simplest form. 12%
Aleksandr [31]

Answer:

I think that the answer is 3/25

4 0
2 years ago
Read 2 more answers
As a motivational speaker, Bree speaks at school assemblies, charging a school
Oksi-84 [34.3K]

Answer:

<em>Bree spoke at 55 assemblies in this district.</em>

Step-by-step explanation:

Bree speaks at school assemblies charging a school district a total cost C modeled by the equation:

C(a) = 50a+1,500

Being a the number of assemblies attending the meeting.

It's given Bree charged the Escambia City School District $4,250  to speak at school assemblies.

We can find the number of assemblies by solving the equation:

50a+1,500=4,250

Subtracting 1,500:

50a=4,250-1,500=2,750

Dividing by 50;

a = 2,750 / 50=55

Bree spoke at 55 assemblies in this district.

4 0
3 years ago
What value of n makes the equation true?
goldenfox [79]

Answer:

n=10

Step-by-step explanation:

You need n to be 10 because: y^20= (y^10)^2

4 0
3 years ago
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