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Dafna1 [17]
3 years ago
7

Justin deposited $54.25 into his bank account after making a $30.00 withdrawl to pay for some school supplies. Represent these s

ituations as signed numbers
a. 45.25, 30.00
b. -45.25, -30.00
c. 45.25, -30.00
d. -45.25, 20.00
Mathematics
1 answer:
Yuri [45]3 years ago
6 0
I believe the answer is c. You had 45.25 so that would be positive then, you withdrew 30 so that would be a negative
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dangina [55]
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4 0
3 years ago
Which of the following coordinate pairs make the equation x - 9y = 12 true?
Ne4ueva [31]

Options:

(12,0)     (0,12)    (3,-1)    (0,-4/3)

Answer:

(12,0) ,  (3,-1)  and (0,-4/3)

Step-by-step explanation:

Given

x - 9y = 12

Required

Which option is true?

A coordinate point is of the form; (x,y)

So, we have to substitute the x and y values in the given equation.

A. For (12,0)

x = 12 and y = 0

x - 9y = 12 becomes

12 - 9*0 = 12

12 - 0 = 12

12 = 12

<em>This is true</em>

B. For (0,12)

x = 0 and y = 12

x - 9y = 12 becomes

0 - 9*12 = 12

- 9*12 = 12

- 108 = 12

<em>This is false</em>

C. For (3,-1)

x =3 and y = -1

x - 9y = 12 becomes

3 - 9*-1 =12

3 + 9 =12

12 = 12<em></em>

<em></em>

<em>This is true</em>

D. For (0,-4/3)

x = 0 and y = -\frac{4}{3}

x - 9y = 12 becomes

0- 9*-\frac{4}{3} = 12

0+ 9*\frac{4}{3} = 12

0+ 3*4 = 12

0+12 = 12

12 = 12

<em></em>

<em>This is true</em>

<em></em>

<em>Hence, (12,0) ,  (3,-1)  and (0,-4/3) are true values of the equation</em>

5 0
3 years ago
2/3 cup of oatmeal is needed to make 10 granola bars. how many such granola bars can be made with 20 cups of oatmeal? Kindly ple
aleksandrvk [35]
2/3 cup of oatmeal - 10 granola bars

When the number of cups of oatmeal increases, the number of granola bars also increases.
If you use for example twice as many cups of oatmeal, you'll make twice as many granola bars.
Therefore, the first step is to calculate how many times 20 cups of oatmeal is more than 2/3 cup of oatmeal. To do it, divide 20 by 2/3.

20 \div \frac{2}{3} = 20 \times \frac{3}{2}=\frac{60}{2}=30

You have 30 times as many cups of oatmeal, so you'll make 30 times as many granola bars.

10 \times 30= 300

300 granola bars can be made with 20 cups of oatmeal.
5 0
3 years ago
Read 2 more answers
Kathy had $10 and gave half of it to her brother. She then gave a third of the remaining
liq [111]

Kelly has $10

- half: $10 - 1/2 x $10

$10 - $5 = $5

- one third: $5 - 1/3 x $5

$5 - $1.6667... or $5 - $1 and 2/3 = $3.33... or $3 and 1/3 or $10/3

She will have left $3.33 left, or $3 and 1/3

3 0
3 years ago
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