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Paraphin [41]
3 years ago
8

(PLEASE HELP ME BEG)Joe has a savings account and a credit card. He has $422 saved in his savings account and has purchased $524

worth of merchandise on his credit card. Use positive and negative numbers to explain the sitiuation. Is Joe's overall balance represented by a positive or negative number? Justify your answer.
Mathematics
2 answers:
sineoko [7]3 years ago
5 0
He spent a extra 120
Delicious77 [7]3 years ago
4 0
If he had $422 to begin with and bought $524 worth of stuff with money he didn't have them his account would go into the negative, $-102
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MaRussiya [10]
(5 * 2) - (8 + 3) = 10 - 11 = -1
7 0
3 years ago
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a week before election day, 276 out of 450 people said they would vote for the republican candidate. if 15,240 registered voters
Ann [662]

Answer:

(a) \frac {276}{450}=\frac {y}{15240}

(b) We cross multiply the probability by the total voters

(c) 9347

Step-by-step explanation:

(a)

Probability of getting a republican voter is

\frac {276}{450}=\frac {138}{225}=\frac {46}{75}

\frac {276}{450}=\frac {138}{225}=\frac {46}{75}=\frac {y}{15240}

These are found by dividing the first numerator and denominator by 2, then by 3

To make it complete, the situation is therefore defined as \frac {276}{450}=\frac {y}{15240} where y is unknown value

(b)

Cross multiplication of the probability and number of voters gives the actual figure of y in the equation formed in part a of the question.

(c)

Since we have 15240 voters who plan to participate in election, we cross multiply to get the approximate number of republican voters which yields

\frac {46}{75}\times 15240=9347.2\approx 9347

5 0
3 years ago
What is the difference of the two polynomials? (9x2 + 8x) – (2x2 + 3x) 7x2 + 5x 7x2 + 11x 11x2 + 5x 11x2 + 11x
Anuta_ua [19.1K]

we have

(9x^{2}+8x)-(2x^{2}+3x)

Step 1

Eliminate the parenthesis

(9x^{2}+8x)-(2x^{2}+3x)=9x^{2}+8x-2x^{2}-3x

Step 2

Group terms that contain the same variable

9x^{2}-2x^{2}+8x-3x

Step 3

Combine like terms

7x^{2}+5x

therefore

the answer is

7x^{2}+5x

5 0
3 years ago
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What is the equation of a line which includes points (-5, 5) and (2, 5)?
sveta [45]
<h2>Hello!</h2>

The answer is:

The equation of the line which includes the points (-5,5) and (2,5) is:

y=5

<h2>Why?</h2>

To find the line which includes the points (-5,5) and (2,5) we can use the following equation:

y-y_1=\frac{y_2-y_1}{x_2-x_1}*(x-x_1)

So, using the points (-5,5) and (2,5), we have:

y-5=\frac{5-5}{2-(-5)}*(x-(-5))

y-5=\frac{0}{2+5}*(x-(-5))

y-5=0*(x+5)

y-5=0

y=5

We have that the equation of the line which includes the points (-5,5) and (2,5) is:

y=5

Have a nice day!

Note: I have attached a picture for better understanding.

8 0
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You read online that a 15 ft by 20 ft brick patio would cost about $2,275 to have professionally installed. Estimate the cost of
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Answer:

$4884 to the nearest $.

Step-by-step explanation:

By proportion it is  2275 *  (23*28) / (15*20)

= $4884

3 0
3 years ago
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