Please help me yall
A mathematics teacher wanted to see the correlation between test scores and
homework. The homework grade (x) and test grade (y) are given in the accompanying
table. Write the linear regression equation that represents this set of data, rounding
all coefficients to the nearest tenth. Using this equation, find the projected test grade,
to the nearest integer, for a student with a homework grade of 45.
Homework Grade (x) Test Grade (y)
78
66
89
76
54
42
86
90
74
68
73
73
86
84
63
54
64
54

Answer:

it's estimated that 750 students in the whole school dislike the 8:30am start time.

Step-by-step explanation:

Since 30 of the 40 students said "no", it means 30/40, or 3/4 of the random sample disliked the 8:30am start time. Multiply this by the whole population: 1,000 × (3/4) = 750.

Another way to check this is using 10/40 = .25 and doing 1000x.25 = 250 (the amount of students who liked it). Then subtract from whole population and it's 750.

Answer:

95 to the power of 5

Step-by-step explanation:

Answer:

B po I'm sure that's is answer thank you

Answer:

C

Step-by-step explanation:

There are nine lines between 0 and 1

The line the red dot is on is 0.9

The simplified form of the given algebraic expression will be 13/8 x - 5/6.

Finding the least common multiples of the denominator expressions can help.

Then using the similar method as we use in the sum of fractions would give the sum of algebraic fractions.

For example,

[tex]\dfrac{a}b} + \dfrac{c}{d} = \dfrac{a \times d + c \times b}{bd}[/tex]

We have the given algebraic expression. we need to simplify the expression.

[tex]\dfrac{3}{4}x -\dfrac{1}{3} +\dfrac{7}{8} x-\dfrac{1}{2} \\\\\\\dfrac{3}{4}x +\dfrac{7}{8} x-\dfrac{1}{3} -\dfrac{1}{2} \\\\\\\dfrac{(6+7)}{8} x - \dfrac{(2+3)}{6} \\\\\\\dfrac{13}{8} x - \dfrac{5}{6}[/tex]

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Answer:

D low all year long because it doesn't snow in Florida

Step-by-step explanation:

Answer:

D. Low all year long

Step-by-step explanation:

It rarely snows in Florida, even in northern Florida.

Answer:

B.

Step-by-step explanation:

b is the correct answer

If the average rate of change is 18, then the value of the x is √(13/5). Then the correct option is B.

It's an average of how far the functions changed per unit throughout that time period.

Let f be the function given by f(x) = x³ + 5x.

Then the value in the closed interval [1,3] will be

The instantaneous rate of change will be

[tex]f'(x) = 3x ^2 + 5[/tex]

Then the average rate of change will be

[tex]= \dfrac{f(3) - f(1)}{3-1} \\\\= \dfrac{(3^3 + 5\times 3) - (1^3 + 5 \times 1)}{3-1}\\\\= 18[/tex]

Then we have

3x² + 5 = 18

Then the value of x will be

[tex]\begin{aligned} \rm 3x^2 + 5 &= 18\\\\\rm x &= \sqrt{\dfrac{13}{3}} \end{aligned}[/tex]

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An equation is formed of two equal expressions. The cost of a new book is $7.43, while the cost of an old book is $8.86.

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

Given the cost of 14 used books is $124. Therefore, the cost of a single used book is,

Cost of single used book(u) = 124/14 = $8.86

Also, the cost of 12 used books and 4 new books is $136. Therefore, the equation can be written as,

12u + 4n = 136

12(8.85) + 4n = 136

106.2 + 4n = 136

n = $7.43

Hence, the cost of a new book is $7.43, while the cost of an old book is $8.86.

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Answer:

Solution

Correct option is E)

To find the solution we split the inequality ∣2x+7∣>11 in two inequality ∣2x+7∣>11 and ∣2x+7∣<−11

⇒2x+7>11

⇒2x>11−7

⇒2x>4

⇒x>2

⇒2x+7<−11

⇒2x<−11−7

⇒2x<−18

⇒x<−9

∴x<−9 or x>2

Step-by-step explanation:

What do you think?

And don't forget to follow tu

Answer:

58 more ml

Step-by-step explanation:

147-89=58 ml.

Answer:

Multiply to remove the fraction, then set equal to 0 and solve.

Exact Form: y = − 1/10

Decimal Form: y = − 0.1

Step-by-step explanation:

Answer:

y = -1/10 or -0.1

Step-by-step explanation:

Multiply both sides of the equation by 100.

To find the opposite of 5y−17, find the opposite of each term.

The opposite of −17 is 17.

Combine 155y and −5y to get 150y.

Subtract 17 from both sides.

Subtract 17 from 2 to get −15.

Divide both sides by 150.

​Reduce the fraction  

​ to lowest terms by extracting and canceling out 15.

Answer: 9/25 or 36%

Step-by-step explanation:

The first time it is a probability of 3/5, and the second blue also has a prbability of 3/5. Multiply them together since it is an "and" situation, and you get 9/25. Or, in percentages, it is 60% * 60%, or 0.6 * 0.6, which is 36% or 0.36. Hope this helps!

Answer:

the correct answer is 36%

Step-by-step explanation:

I got it right on Edmentum

Hook me up with a 5 star and a thanks :)

The average speed of Keane’s journey in mph is 56.25 mph (miles per hour)

From the question, we are to determine Keane's average speed

Average speed is given by the formula,

Average speed = Distance / Time

Distance travelled = 180 miles

Now, we will calculate the time spent

From the given information,

He leaves his home at 09:30 and arrives in Liverpool at 12:42

09:30 to 12:42 is 3 hours 12 minutes

∴ Time = 3 hours 12 minutes = 3 + (12/60) hours = 3.2 hours

Thus,

Average speed = 180 / 3.2

Average speed =  56.25 mph (miles per hour)

Hence, the average speed of Keane’s journey in mph is 56.25 mph (miles per hour)

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[tex]~~~~~~\text{Circumference}~ = 2 \pi r\\\\\\\implies r = \dfrac{\text{Circumference }}{2\pi}\\\\\\\implies r = \dfrac{3}{2\pi} \\\\\\\text{Now,}\\\\\text{Area} = \pi r^2 \\\\~~~~~~~~=\pi \left( \dfrac{3}{2\pi} \right)^2\\\\\\~~~~~~~~=\pi \cdot \dfrac{9}{4\pi^2}\\\\\\~~~~~~~~=\dfrac{9}{4\pi}\\\\\\~~~~~~~~\approx0.72[/tex]

Answer:

45 degree ange slice

Step-by-step explanation:

Answer: ITs B

Step-by-step explanation: because the Ir which mean of real numbers the range is the higher number

Answer:

1 kg of mushrooms costs £2.7.

Step-by-step explanation:

Step 1: Write equations.

Let a be the cost of apples per kg and m the cost of mushrooms per kg.

First equation: Ibrar buys 3 kg of apples. He also buys 0.4 kg of mushrooms. The total cost is £6.93.

[tex]3a + 0.4m = 6.93[/tex]

Second equation: 1 kg of apples cost £1.95.

[tex]a = 1.95[/tex]

Step 2: Solve the system of equations.

1) [tex]3a + 0.4m = 6.93[/tex]

2) [tex]a = 1.95[/tex]

Substitute a in the first equation with a from second.

[tex]3a + 0.4m = 6.93\\3(1.95) + 0.4m = 6.93[/tex]

Solve for m.

[tex]5.85 + 0.4m = 6.93\\0.4m = 6.93 - 5.85 \\0.4m = 1.08\\m = \frac{1.08}{0.4}\\m = \text{\£}2.7[/tex]

The cost of 1 kg of mushrooms is £2.7.

Two or more expressions with an Equal sign is called as Equation.

Given that Ibrar buys 3kg of apples

Ibrar buys 0.4kg of mushrooms.

The total cost is £6.93

3x+0.4y=6.93...(*)

1kg of apples cost is £1.95

x=1.95

Substitute the value of x in *

3(1.95)+0.4y=6.93

5.85+0.4y=6.93

Subtract 5.85 on both sides

0.4y=6.93-5.85

0.4y=1.08

Divide both sides by 0.4

y=2.7

Hence, the cost of 1 kg of mushrooms is £2.7.

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Answer:

the 4th option because 24 months times the amount plus the 39.99 to set up would get you a final answer

Answer:

39.99/24c = 351.75

24c + 39.99 = 351.75

Where c is the cost to set up an account

Step-by-step explanation:

Knowing that it given:

What is the cost(c) month for using the service for 24 months?

That means "Cost = c"

That leads us to the answer:

"Where c is the cost to set up an account"

We also know that we are finding for the 24 months thus 24c.

That leads us to

24c + 39.99 = 351.75 and 39.99/24c = 351.75

Hence, the answers are:

39.99/24c = 351.75

24c + 39.99 = 351.75

Where c is the cost to set up an account

Kavinsky

Answer:

[tex]\huge\underline{\red{A}\blue{n}\pink{s}\purple{w}\orange{e}\green{r} -}[/tex]

given - an equation and its roots !

To find - values of a and b in the given equation ~

[tex]Quadratic \: eq {}^{n} = ax {}^{2} + 7x + b = 0 \\ [/tex]

roots of the question are [tex] \dashrightarrow - 3 \: and \: \frac{2}{3} \\ [/tex]

Now ,

[tex]Sum \: of \: zeroes \: ( \: \alpha \: + \: \beta \: ) = - \frac{ - b}{a} \\ \\ \implies \: - 3 + \frac{2}{3} = \frac{ - 7}{a} \\ \\ \implies \: \frac{ - 9 + 2}{3} \\ \\ \implies \frac{ - 7}{3} = \frac{ - 7}{a} \\ \\ \underline{on \: comparing} \\ \\\bold\red{\implies \:a = 3}[/tex]

further ,

[tex]Product \: of \: zeroes \: ( \: \alpha \: \times \beta \: ) = \frac{c}{a} \\ \\ \implies \: (- \cancel {3})( \frac{2}{\cancel3} ) = \frac{b}{a} \\ \\ \implies \: - 2 = \frac{b}{3} \\ \\ \implies \: b = 3 \times - 2 \\ \\ \bold\red{\implies \: b = - 6}[/tex]

hope helpful :D

Answer:

b

Step-by-step explanation:

...

Answer:

C - no association

Step-by-step explanation:

The data isn't linked/following a general trend.

Answer:

16

Step-by-step explanation:

10*2 = 20

8*2 = 16

Answer:

△JKL is not congruent to △J′K′L′ because there is no sequence of rigid motions that maps △JKL to △J′K′L′.

Step-by-step explanation:

If L' were (-3,-4), it would be a reflection of L across the x-axis as J' and K' are with respect to J and K. Unfortunately, because it is not, the side lengths J'L' and K'L' of triangle J'K'L' are different from those of triangle JKL. This ensures the triangles JKL and J'K'L' are not congruent.

- Jackson

Answer:

6

Step-by-step explanation:

You would divide the total number of hours by the number of hours to come to the final answer of 6

please mark brainliest (:

Answer:

The answer to the question is 20.55.

Answer:

20.55

Step-by-step explanation:

1 Simplify 68.5/100 to  0.685.

0.685×30

2 Simplify.

20.55