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marta [7]
3 years ago
15

Jeff is buying apples and bananas from the farmer's market. He know that to find his total cost he will use the expression 1.25a

+ 0.50b, where a stands for the number of apples he bought and b stands for the number of bananas he bought. If he buys 4 apples and 6 bananas how much money did he spend?
A) $10.00
B) $2.00
C) $7.00
D) $8.00
Mathematics
1 answer:
yan [13]3 years ago
5 0

Answer: 8.00


Step-by-step explanation:

1.25a=3 0.50=5 so the answer is D, 8.00

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There are 5 counts in half a second
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Mrs. cugini collected data on the hand span length and height of each of her Algebra 1 students.
dem82 [27]
<h3>a. slope = \displaystyle m=\frac{15}{2}</h3><h3>b. slope = m = positive = positive correlation =  two sets of data increase together</h3><h3>Further explanation</h3>

Scatter plot shows the relationship between data

We can use Regression to make lines on the chart or you can also make lines with the principle as close as possible to all points

Regression

\displaystyle m=\frac{N\sum (xy)-\sum x\sum y }{ N\sum (x^2)-(\sum x)^2}

Because data is in the form of numbers from the hand span length and height of each of students. not displayed clearly, then we make a line directly by making points on the graph above and below the line as much as possible to be balanced

We specify 2 points that are crossed by a line, for example:

(6.45) and (8.60)

slope (m) = change in y / change in x

\displaystyle m=\frac{60-45}{8-6}\\\\m=\frac{15}{2}

Slope has a positive value, and shows a positive correlation where the tendency of the number rises simultaneously, or can be concluded:

<em>tall students will have the long hand span length too</em>

<h3>Learn more</h3>

Line equation

brainly.com/question/10955762

Keywords : line equation, slope, regression, the hand span length and height, graph, Scatter plot

#LearnWithBrainly

7 0
3 years ago
The temperature Saturday is -13°, and on Sunday it is -4°. Which equation would be used to show the difference in temperature fr
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Scientists are examining two different strains of a particular bacteria. The length of one strain of the bacteria measures 0.000
vesna_86 [32]

Scientists are examining two different strains of a particular bacteria. The length of one strain of the bacteria measures 0.000000368

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= 3.04e-7

Put 3.04e-7 in standard notation.

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Put 0.00000304 back into scientific notation, instead with a multiply sign.

Move the dot back, making the number in between 1-10.

In this case, we would move it back 7 times.

3.04 · 10x^{-7}

So the answer would be A.

3 0
3 years ago
Please help!!<br> I’m so confused I really need help <br> I will mark brainliest
BartSMP [9]

Answer:

graphhhhhh

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You start at 1 on the y axis and then do this^.

Then you look at the line you have made and see which points are obvious.

You can just copy what I got on the graph below.

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