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Burka [1]
3 years ago
13

Ms. Henning wants to purchase 30 calculators for her math class. Calculators cost $14 each. Me. Henning currently has $300 in he

r account to spend on the calculators. How much more money does she need?
Mathematics
1 answer:
KATRIN_1 [288]3 years ago
8 0

Answer:

She needs 120 more dollars in order to purchase the calculators for her math class

Step-by-step explanation:

In order to solve this you have to find how much money 30 calculators are worth (30*14.00=420) which when subtracted from the amount she has in her account, (300) you can then subtract 420-300 to give you the answer of $120 more dollars

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alexgriva [62]

Answer:

x = 20

Step-by-step explanation:

This isn't too difficult once you understand it.

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180 - 160 = 20

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3 years ago
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3 years ago
What are the intercepts of 2x + 3y – 6z = 30?
ycow [4]

Intercept of equation 2x + 3y - 6z = 30 is (15, 0, 0) , (0, 10, 0) and (0, 0, -5)

<h3><u>Solution:</u></h3>

Given equation is:

2x + 3y - 6z = 30

We have to find the intercepts

Intercept are the point where equations cut the x- axis, y- axis and z- axis.

<em><u>Thus, at x- axis :</u></em>

y and z both are zero

So substitute y = 0 and z = 0 in given equation

2x + 3(0) - 6(0) = 30

2x = 30

x = 15

<h3>Thus the intercept is (15, 0, 0)</h3>

<em><u>Thus at y - axis:</u></em>

x and z both are zero

So substitute x = 0 and z = 0 in given equation

2(0) + 3y -6(0) = 30

0 + 3y + 0 = 30

3y = 30

y = 10

<h3>Thus the intercept is (0, 10, 0)</h3>

<em><u>Thus at z - axis:</u></em>

x and y are both zero

So substitute x = 0 and y = 0 in given equation

2(0) + 3(0) - 6z = 30

-6z = 30

z = -5

<h3>Thus the intercept is (0, 0, -5)</h3>

Thus, intercept of equation 2x + 3y - 6z = 30 is (15,0,0) ,(0,10,0) and (0,0,-5)

6 0
3 years ago
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kow [346]
Answer: x=13

explanation:
-2x+6=-20
subtract 6 from both sides
-2x=-26
divide -2 by both sides
two negatives equals a positive
x=13
8 0
4 years ago
Read 2 more answers
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natali 33 [55]

Answer:

A

Step-by-step explanation:

Let

x = the number of phone available

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Hence, correct option is option A.

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3 years ago
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