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irina1246 [14]
3 years ago
6

The graph shows the price, in dollars, of different numbers of sweet breads at Alan's store. The table shows the price, in dolla

rs, of different numbers of shortcakes at the same store. A graph shows Number of Sweet Breads on x-axis and Price of Sweet Breads on y-axis. The x-axis scale is shown from 0 to 30 at increments of 5 and the y-axis scale is shown from 0 to 160 at increments of 20. A straight line joins the ordered pairs 5, 20 and 10, 40 and 15, 60 and 20, 80 and 25, 100 and 30, 120. Shortcake Number of Shortcake Price of Shortcake (dollars) 5 45 10 90 15 135 20 180 How many dollars more is the price of a shortcake than the price of a sweet bread at David's store?
$4 $5 $9 $25
Mathematics
1 answer:
mixer [17]3 years ago
7 0

Answer:

$5 is the answer.

Step-by-step explanation:

when you plot out the graph for line #1 and take the highest coordinate and divide the biggest number by that smallest number using rise over run (or any coordinate for the line it is a constant proportion) you find that the constant proportionality is $4 (which is a reasonable price for a shortcake) doing the same to line #2 you find that the price for  a single cupcake is $9.

All you have to do to fine the difference between them is to subtract the higher number from the smaller one. $9 - $4 = $5

There's your answer!!!! Brainliest plz!!!

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Aneli [31]

Answer:

What question

Step-by-step explanation:

3 0
2 years ago
The school is 3.2 blocks from someone’s house. how many blocks does the person walk to go to and from school?
DENIUS [597]

The answer is: " 6.4 blocks " .

________________________________________________________

3.2 blocks (one way), PLUS: 3.2 blocks the other way:

3.2 + 3.2 = 6.4 blocks .

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4 0
3 years ago
What is the quotient of m^6/5 divided by 5/m^2
DENIUS [597]

Answer:

\large\boxed{\dfrac{m^8}{25}}

Step-by-step explanation:

\dfrac{m^6}{5}\div\dfrac{5}{m^2}\\\\\text{Divide by a fraction is the same as multiply by its reciprocal}\\\\=\dfrac{m^6}{5}\times\dfrac{m^2}{5}=\dfrac{m^6\times m^2}{5\times5}\\\\\text{use}\ a^n\times a^m=a^{n+m}\\\\=\dfrac{m^{6+2}}{25}=\dfrac{m^8}{25}

3 0
3 years ago
Here is a simple probability model for multiple-choice tests. Suppose that each student has probability p of correctly answering
Alla [95]

Answer:

a) The probability that Jodi scores 78% or lower on a 100-question test is 4%.

b) The probability that Jodi scores 78% or lower on a 250-question test is 0.023%.

Step-by-step explanation:

a) To approximate this distribution we have to calculate the mean and the standard distribution.

The mean is the proportion p=0.85.

The standard deviation can be calculates as:

\sigma=\sqrt{\frac{p(1-p)}{n} }= \sqrt{\frac{0.85*(1-0.85)}{100} }=0.04

To calculate the probability that Jodi scores 78% or less on a 100-question test, we first calculate the z-value:

z=\frac{p-p_0}{\sigma} =\frac{0.78-0.85}{0.04} =-1.75

The probability for this value of z is

P(x

The probability that Jodi scores 78% or lower on a 100-question test is 4%.

b) In this case, the number of questions is 250, so the standard deviation needs to be calculated again:

\sigma=\sqrt{\frac{p(1-p)}{n} }= \sqrt{\frac{0.85*(1-0.85)}{250} }=0.02

To calculate the probability that Jodi scores 78% or less on a 250-question test, we first calculate the z-value:

z=\frac{p-p_0}{\sigma} =\frac{0.78-0.85}{0.02} =-3.5

The probability for this value of z is

P(x

The probability that Jodi scores 78% or lower on a 250-question test is 0.023%.

6 0
3 years ago
10. Solve using substitution.<br> x - 2y = 3 3x + y = -5
nasty-shy [4]

Move all terms that don't contain x to the right side and solve.

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