MATHEMATICS HIGH SCHOOL

The data set represents a progression of hourly temperature measurements. Use a graphing calculator to determine the quadratic regression equation for this data set.I've tried all of these answers but none of them seemed correct
The data set represents a progression of hourly temperature measurements. - 4

Answers

Answer 1
Answer:

Answer:

b

Step-by-step explanation: I had this question before
Answer 2
Answer:

Answer:

b

Step-by-step explanation:

Related Questions

Complete the equation a^1/2×a___=a
12 litres of water are poured into an aquarium of dimensions 50cm length, 30cm breadth, and 40cm height. How high (in cm) will the water rise? (1 litre = 1000cm3)a. 6b. 8c. 10d. 20e. 40
Select all the group of numbers that are ordered correctly from least to greatest
What is the range and domain of the parent function f(x) = |x|
Randy is thinking of a number. When he adds 7 to the number, multiplies the sum by 3, then subtracts 2, the result is 13. What is the original number?A. 6B. -2C. 2D. -6

Find the rate that would be better to solve the problem. A sunflower grows 28 cm in 8 days.
How many centimeters will it grow in 12 days?
a. CM / day
b. days/CM

Answers

I think the correct answer would be A. cm to days, because to find the unit rate, you have to reduce

When graphed, which of the following is the solution of the given system below?-3=-y-4x

0=6-2y-8x

a.(2,-5)

b. (1,2)

c. (2,-2)

d. Infinite number of solutions

Answers

Answer:

None of the above.

Step-by-step explanation:

-3 = y - 4x

Thus y = 4x - 3

0 = 6 - 2y - 8x

2y = 6 - 8x

Thus y = 3 - 4x

4x - 3 = 3 - 4x

8x = 6

x = 8/6 = 4/3

y = 4 × 4/3 - 3 = 7/3

Should be (4/3, 7/3)

Hopefully this answer helps you :)

Delaney would like to make a 5 lb nut mixture that is 60% peanuts and 40% almonds. She has several pounds of peanuts and several pounds of a mixture that is 20% peanuts and 80% almonds. Let p represent the number of pounds of peanuts needed to make the new mixture, and let m represent the number of pounds of the 80% almond-20% peanut mixture. What is the system that models this situation?

Which of the following is a solution to the system: 2 lb peanuts and 3 lb mixture; 2.5 lb peanuts and 2.5 lb mixture; 4 lb peanuts and 1 lb mixture? Show your work.

Answers

Answer: The system that models this situation is:

{p+m=50.6p+0.2m=0.6×5​

This system can be solved by substitution or elimination. One possible solution is:

Multiply the second equation by 5 to eliminate the fractions:

{p+m=53p+m=15​

Subtract the first equation from the second equation to eliminate m:

2p=10

Solve for p:

p=210​=5

Substitute p into the first equation to find m:

m=5−p=5−5=0

The solution is (p, m) = (5, 0), which means Delaney needs 5 lb of peanuts and 0 lb of mixture.

Another possible solution is:

Multiply the first equation by -0.2 to eliminate m:

{−0.2p−0.2m=−10.6p+0.2m=3​

Add the two equations to eliminate m:

0.4p=2

Solve for p:

p=0.42​=5

Substitute p into the first equation to find m:

m=5−p=5−5=0

The solution is (p, m) = (5, 0), which means Delaney needs 5 lb of peanuts and 0 lb of mixture.

Therefore, the only correct option among the given choices is 4 lb peanuts and 1 lb mixture.

Help plz :(The relationship between the number of cups of water, w, and the number of cups of
lemon juice, j, used in a recipe is described by the equation shown.
j = 2w

How many cups of water are needed for each cup of lemon juice?
Show your work.

Answers

Answer:

Step-by-step explanation:

The relationship between the number of cups of water, w, and the number of cups of

lemon juice, j, used in a recipe is described by the equation shown.

j = 2w

To evaluate the number of cups pr cup of juice, find the value of w given j=1

1=2w

w=1/2

iHalf a cup of water is needed for each cup of lemeonce ju

Quadrilateral ABCD is inscribed in a circle. m A is 64°, m B is (6x + 4)°, and m C is (9x - 1)°. What is m D?A. 64°
B. 82°
C. 90°
D. 98°
E. 116°

Answers

Answer: Choice D) 98 degrees

============================================================

Explanation:

The quadrilateral is inscribed in the circle which means every corner point (A,B,C,D) is on the circle. No part of the quadrilateral is outside the circle. 

One property of inscribed quadrilaterals is that the opposite angles add to 180 degrees. So,
A+C = 180
B+D = 180

We know that
A = 64
B = 6x+4
C = 9x-1

Let's use angles A and C to find x
A+C = 180
64+9x-1= 180
9x+63 = 180
9x+63-63 = 180-63
9x = 117
9x/9 = 117/9
x = 13

Which helps us find angle B
B = 6x+4
B = 6*13+4
B = 78+4
B = 82 degrees

Then we can finally find angle D
B+D = 180
82+D = 180
82+D-82 = 180-82
D = 98 degrees

Answer:

choiced c 98

Step-by-step explanation:

What are the approximate solutions of 2x2 + 9x = 8 to the nearest hundredth?a. x ≈ 1.22 and x ≈ 3.28
b. x ≈ −0.76 and x ≈ 5.26
c. x ≈ −1.22 and x ≈ −3.28
d. x ≈ −5.26 and x ≈ 0.76

Answers

Answer:

The roots of the equations are x ≈ -5.26 and x ≈ 0.76 .

Option (d) is correct.

Step-by-step explanation:

Formula for the roots is given by .

x = \frac{-b \pm \sqrt{b^(2) -4ac}}{2a}

As the equation in the form

2x^(2) + 9x - 8 = 0

As the equation in the form ax² + bx + c = 0

a = 2, b= 9 , c = -8

Put in the formula

x = \frac{-9 \pm \sqrt{9^(2) -4* 2* -8}}{2* 2}

x = (-9 \pm √(81 + 64))/(4)

x = (-9 \pm √(145))/(4)

√(145) = 12.04

Thus First roots be

x = (-9 - 12.04)/(4)

x = (-21.04)/(4)

x ≈ -5.26

The second root be

x = (-9 + 12.04)/(4)

x = (3.04)/(4)

x ≈ 0.76

Therefore the roots of the equations are x ≈ -5.26 and x ≈ 0.76 .

Option (d) is correct.

Answer:

the anwser is d, hope this helps
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