Evaluate the expression if x is , y is -4, and z is -0.2. x+y

Answers:

Please read the disclaimer below.

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Explanation:

Disclaimer: The issue is that without the coordinate values, it's impossible to determine the regression line. It's not clear where some (or most) of the red points are located. Often that's why a table is needed. I would ask your teacher for clarification.

With that said, I'll still give it a shot.

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Part 1

The blue regression line appears to go through the two points (0,30) and (50,50). Let's find the slope through this line

m = (y2-y1)/(x2-x1)

m = (50-30)/(50-0)

m = 20/50

m = 0.40

The y intercept is b = 30 since the blue line appears to cross the y axis at this location.

So y = mx+b turns into y = 0.40x+30

Replace x with n and replace y with b

We go from y = 0.40x+30 to b = 0.40n+30 which is the regression line.

Again this is all based on the assumptions that the blue line goes through (0,30) and (50,50).

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Part 2

Assuming we have the correct regression equation, we can immediately see that each extra call costs $0.40 which is the same as 40 cents. So it's 40 cents per call. This is the slope value, which is the rate of change. Each time n goes up by 1, b goes up by 0.40

Because the regression line estimates the actual observed values, we won't always land on a red point. But the goal is to get as close as possible.

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Part 3

Again assuming we have the correct regression equation, we plug in n = 34 and evaluate to determine the bill

b = 0.40*n + 30

b = 0.40*34 + 30

b = 43.60

Pete would pay $43.60 if he made 34 calls.

Answer:

2^8

Step-by-step explanation:

Answer:

2 and a little 3 on top of the 2

Step-by-step explanation:

Answer:

Step-by-step explanation:

so we have

8 men.........................................9 women

40 men.......................................45 women

there are 40 men in the recital

45/9=5

5*8=40 men

Answer:

its d for number 1

Step-by-step explanation:

Answer: y = -2/5x +8

Step-by-step explanation:

Answer:

Answer is on the pic

Step-by-step explanation:

I hope it's helpful!

Answer:

7. no

8.yes

9.yes

10.no

I hope this helps!

Answer:

7. no  

8. yes

9. yes

10. no

Step-by-step explanation:

Answer:

30%

Step-by-step explanation:

Key skills needed: Probability

1) There is a 70% chance of rain.

2) We need to find the chances against rain.

3) To do this, we need to use the fact that

70% + x = 100% (Since all the probabilities add up to 1 or 100%)

4) If you subtract 70% from both sides, x = 30%

5) This means the probability against rain is 30%.

Hope you understood and have a nice day!! :D

Answer:

scalene, acute

Step-by-step explanation:

plzz help mee e

A motor home starts across a lake. The lake is 7 miles long and it takes 0.5 hours to get across. What is the speed? Write a formulae and show a label.

Answer:

see below

Step-by-step explanation:

y≤5x−4

Substitute the points in and see if they are true

(0,4)

4≤5*0−4

4≤−4  Not true not a solution

(1,3)

3≤5*1−4

3≤1  Not true not a solution

(4,3)

3≤5*4−4

4≤16  true  solution

(3,-1)

-1≤5*3−4

-1 ≤11   true  solution

(1,1)

1≤5*1−4

1≤1   true  solution

(6,0)

0≤5*6−4

0≤26   true  solution

Step-by-step explanation:

All except first 2

Let's verify

#3

[tex]\\ \rm\Rrightarrow 3<=5(4)-4<=20-4<=16\checkmark[/tex]

#4

[tex]\\ \rm\Rrightarrow -1<=15-1<=14\checkmark[/tex]

#5

[tex]\\ \rm\Rrightarrow 1<=5-4=1\checkmark[/tex]

#6

[tex]\\ \rm\Rrightarrow 0<=30-4<=26\checkmark[/tex]

Answer:

B. 2

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Linear means in a straight line, and 2 is not in a straight line

Answer:

[tex]\displaystyle y = 2e^\bigg{\frac{x^3}{3}} + 1[/tex]

General Formulas and Concepts:

Pre-Algebra

Algebra I

Algebra II

Calculus

Derivatives

Derivative Notation

Basic Power Rule:

Slope Fields

Integrals

Integration Constant C

Integration Rule [Reverse Power Rule]:                                                                   [tex]\displaystyle \int {x^n} \, dx = \frac{x^{n + 1}}{n + 1} + C[/tex]

Integration Property [Addition/Subtraction]:                                                           [tex]\displaystyle \int {[f(x) \pm g(x)]} \, dx = \int {f(x)} \, dx \pm \int {g(x)} \, dx[/tex]

U-Substitution

Logarithmic Integration:                                                                                            [tex]\displaystyle \int {\frac{1}{u}} \, dx = ln|u| + C[/tex]

Step-by-step explanation:

*Note:  

When solving differential equations in slope fields, disregard the integration constant C for variable y.

Step 1: Define

[tex]\displaystyle \frac{dy}{dx} = x^2(y - 1)[/tex]

[tex]\displaystyle f(0) = 3[/tex]

Step 2: Rewrite

Separation of Variables. Get differential equation to a form where we can integrate both sides and rewrite Leibniz Notation.

Step 3: Find General Solution Pt. 1

Step 4: Find General Solution Pt. 2

Identify variables for u-substitution for dy.

Step 5: Find General Solution Pt. 3

General Form:  [tex]\displaystyle y = \pm Ce^\bigg{\frac{x^3}{3}} + 1[/tex]

Step 6: Find Particular Solution

∴ our particular solution is  [tex]\displaystyle y = 2e^\bigg{\frac{x^3}{3}} + 1[/tex].

Topic: AP Calculus AB/BC (Calculus I/I + II)

Unit: Differentials and Slope Fields

Book: College Calculus 10e  

Answer:

Piece A: 42 inches

Piece B: 14 inches

Step-by-step explanation:

If the pipe is 56 inches long and divided into 2 parts with a 3;1 ratio, then you would divide 56 by 4 (3;1->3+1) to get 14. 14 would be the smaller piece, then you'd multiply 14 by 3 to get 42 inches because theres 3 parts for the larger piece in the ratio of 3;1. :) the explanation is probably really weird but the answer should be correct anyways

Answer:

-196

explain: √3.742 - 14 = -196

Answer:

you are probably gonna get it wrong

Step-by-step explanation:

i dont know the answer

Step-by-step explanation:

1. Increase amount = 40-25=15 Increase percent = (15/25)×100%= 60%.

2.Increase amount = 30-15 = 15. Increase percent = ( 15/15)× 100% = 100%.

3. Increase amount= 50-18=32 Increase percent= (32/18) x100% = 177.77%

4. Increase amount= 80-22=58 Increase percent= (58/80) x 100% = 72.5% -----> 73% (when rounded of to the nearest 10's).

5. Increase amount= 18-16=2 Increase percent = (2/18)×100 %= 11.111...% -----> 11% (when rounded of to the nearest 10's).

6. Increase amount = 10-3=7 Increase percent= (7/10)×100% = 70%.

7. Increase amount = 100-85 = 15 Increase percent = ( 15/100) × 100% = 15%

Answer:

The length of hypotenuse is 45 kilometers

Step-by-step explanation:

Assuming that given lengths are of perpendicular and hypotenuse, and the triangle is a right angled triangle

Perpendicular = P = 27 km

Base = B = 36 km

Hypotenuse = H = ?

We can use Pythagoras theorem for finding the length of hypotenuse

The Pythagoras theorem is given by:

[tex]H^2 = B^2+P^2[/tex]

Putting the values, we get

[tex]H^2 = (36)^2 + (27)^2\\H^2 = 1296 + 729\\H^2 =2025[/tex]

Taking square root on both sides

[tex]\sqrt{H^2} =\sqrt{2025}\\H =45[/tex]

Hence,

The length of hypotenuse is 45 kilometers

Answer: 1.5 bananas per sundae

Step-by-step explanation:

There was a total of 6 bananas used in making 4 sundaes.

To find the number of bananas used per sundae, you should divide the number of bananas by the number of sundaes.

= No. of bananas / No. of sundaes

= 6 / 4

= 1.5 bananas per sundae

Answer: 1928.90

Step-by-step explanation:

Answer:

Step-by-step explanation:

9(5 + 2)

the answer is D

Answer:

2.95, 2.25 and 2.016

Step-by-step explanation:

Answer:

60

Step-by-step explanation:

4/3 = x/45

45/3=15

15*4=60

x=60

Answer:

it should be D. subtraction

Answer:

[C] 52

Step-by-step explanation:

If line SQ bisects angle RST, that means it splits it in half. This would make angles RSQ and QST equivalent.

So that means that angle RSQ would equal 26

Since the question is asking for angle RST (the whole angle), you would add both of the angles

26 +26 = 52

Answer:

29

Step-by-step explanation:

32+28+30 is 90 degrees which is a right angle

Answer:

it will be 56

Step-by-step explanation:

maney because I am 9nyears old

Answer:

it will be 56

Step-by-step explanation: