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skad [1K]
4 years ago
10

Nathan has 7 boxes of marbles. Each box contains b marbles If he has c marbles altogether, express c in terms b

Mathematics
1 answer:
melisa1 [442]4 years ago
4 0

Answer:

c= 7b

Step-by-step explanation:

7b = c Because Nathan has 7 boxes of marbles, and each has b marbles inside. That means 7 times b is the total amount of marbles. Since c is the total amount of marbles, 7b = c Express c in terms of b means it has to be c = something

:)

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3 years ago
find the value of k for which the following system of equations has a unique solutions 1 . kx +2y= 5 , 3x+y=1​
lana66690 [7]

Answer:

If you choose any value for k other than 6, that will be give you the one solution.

If k=6, you have no solutions because the lines will be parallel.

Step-by-step explanation:

We are going to put each of this in y=mx+b where m is the slope and b is the y-intercept.

kx+2y=5

Subtract kx on both sides:

    2y=-kx+5

Divide both sides by 2:

     y=(-k/2)x+(5/2)

The slope is -k/2 and the y-intercept is 5/2

3x+y=1

Subtract 3x on both sides:

     y=-3x+1

The slope is -3 and the y-intercept is 1.

We want the system to have one solution so we want the slopes to be difference.

So we don't want (-k/2)=(-3).

Multiply both sides by -2: k=6.

We won't want k to be 6.

3 0
3 years ago
Catbi)<br> If z= (a+bi) what is the value of ( a+bi)^2
WITCHER [35]
Z^2
You can substitute (a+bi) for z.
z^2 can also be written as z times z (like you multiply z by z)
I hope that makes sense!
6 0
3 years ago
What is the slope of the line through (-7,-8) and (0,4)
Oksanka [162]

Answer:

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Step-by-step explanation:

3 0
3 years ago
An employee at an electronics store makes $12 per hour, plus a commission of 4.5% of her sales.
Darya [45]

Answer:

The employee earned a total of $1004.40 dollars in commissions this week

Step-by-step explanation:

Times the number of televisions (36) by there cost ($620)

That will give you $22320

Then time $22320 by 0.045 which will give you $1004.40

Hope that helps

3 0
2 years ago
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