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erma4kov [3.2K]
3 years ago
8

Paula always withdraws 20 dollars more than she needs from the bank. Write an expression for the amount of money Paula withdraws

if she needs d dollars.
Mathematics
1 answer:
Pani-rosa [81]3 years ago
7 0
Because the original statement states that Paula withdrew $20 MORE, then me can write a statement as instructed, with "d" meaning dollars:
d + $20
Hope that helps:)
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Which equation represents the line through (-8, 10) and (3, 7) in point-slope form?
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Step-by-step explanation:

7-10/3-(-8)

7-10/3+8

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3 years ago
(Picture) MULTIPLYING MONOMIALS AND BINOMIALS
Sauron [17]

Answer:

Option C is correct, i.e. 2x² +7x -4.

Step-by-step explanation:

Given is (2x-1)(x+4)

Applying FOIL method:-

F- multiply First two, O- multiply Outer two, I- multiply Inner two, L- multiply Last two.

So, (2x-1)(x+4) = 2x*x +2x*4 -1*x -1*4

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Hence, option C is correct, i.e. (2x-1)(x+4) = 2x² +7x -4.

3 0
3 years ago
The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a me
zimovet [89]

Answer:

Option D) $275

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $235

Standard Deviation, σ = $20

We are given that the distribution of amount of money spent by students is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

We have to find the value of x such that the probability is 0.975

P( X < x) = P( z < \displaystyle\frac{x - 235}{20})=0.975  

Calculation the value from standard normal z table, we have,  

P( z < 1.960) = 0.975

\displaystyle\frac{x - 235}{20} = 1.960\\x =274.2 \approx 275

Approximately 97.5% of the students spent below $275 on textbook.

7 0
3 years ago
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Answer:

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We can perform the same calculation here,

6/x=3/(k+2)

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7 0
3 years ago
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Tresset [83]
Three hundred and ten million seven hundred and sixty three one hundred and thirty six
3 0
3 years ago
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