Yesterday morning, the temperature was -11°F. The temperature increased 7°F by noon and then decreased 4°F by nightfall. What was the temperature at nightfall last night?

Answer:

[See Below]

Step-by-step explanation:

3/4 = 0.75

1/3 = 0.333..

5/8 = 0.625

Largest to Smallest: 3/4, 5/8, 1/3

Answer:

$37.60

Step-by-step explanation:

If 7 shirts = 32.90 then (32.90/7) x 8 = 37.60

Greetings from Brasil...

Be that unknown number X

Then we can write the following expression:

X + 4.7 = 8.1

Part A

The equation would be y = 12x+200 where x is the number of hours and y is the amount saved. The 200 is what you already have, and then you add on 12x additional dollars.

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Part B

equation would be y = -0.10x+12. You start off with 12 gallons and each time you use up 0.10 gallons of gas for each mile you drive, so in total you use up 0.10x gallons

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Part C

Equation is y = 2x+60. You add on 2x additional points to the 60 you already have

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Part D

x is the number of messages and y is the total monthly bill, so the equation would be y = 0.25x + 35

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Part E

eating x cookies, at 120 calories a piece, means y = 120x is the total number of calories you consume per day. This is just considering the cookies of course and not other meals.

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In each case, the independent variable is the variable that is allowed to change and you know this value (or are given it). For instance, you know how many miles you drive and it varies. The dependent variable relies on the value chosen for the independent variable. So as x changes, then so does y.

Answers & Step-by-step explanation:

Let's define the two terms that we need to identify:

Independent variable: A variable that you have control over.

Dependent variable: A variable you cannot control and depends on other factors.

Let's solve your problems!

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Amount saved: dependent variable

Amount earned: independent variable

Explanation:

The amount you can save depends on how much you earn.

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Amount of gas: dependent variable

Amount you drive: independent variable

Explanation:

The amount of gas you have affects how much you can drive.

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Test grade: dependent variable

Extra credit you gain: independent variable

Explanation:

Your test grade is dependent on the amount of extra credit you earn.

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Monthly bill: dependent variable

Number of texts sent: independent variable

Explanation:

The monthly bill is dependent on the number of texts sent.

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Amount of calories per day: dependent variable

Amount of cookies eaten: independent variable

Explanation:

The number of calories eaten each day is dependent on how many cookies you eat.

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Answer:

no slope

Step-by-step explanation:

Answer:

- 56

Step-by-step explanation:

JT = CJ + CT

4x + 2 = 8x + 5 + 55

4x + 2 = 8x + 60

4x - 8x = 60 - 2

- 4x = 58

x = 58/-4

x = -29/2

x = - 14.5

JT = 4x + 2 = 4(-14.5) + 2 = - 58 + 2 = - 56

Answer:

4(5+3)

Step-by-step explanation:

I just did this question and I got it correct trust me ;)

Answer:

4(5 + 3)     (C or 3)

Step-by-step explanation:

Edge 2020

Answer:

Cost for 35 songs:  1(35)+11=46

Cost for s songs:  1s+11

Step-by-step explanation:

Answer:

62

Step-by-step explanation:

JL = JK + KL

5x + 2 = 3x - 1 + 27 add like terms

5x + 2 = 3x + 26

2x = 24

x = 12

JL = 12 × 5 + 2

JL = 62

Answer:

27m3- is the answer equals to 8n 3

Answer:

z < 2

Step-by-step explanation:

4z - 5 < 3

4z < 8

z < 2

Answer:

Step-by-step explanation:

We are given that the factory produces  42,000  computer monitors per day

And the claim is of this amount produces fewer than 660 are defective.

a random sample shows that of 240 monitors 2 are defective

to verify the factory managers claim we need to know how many 240s are there in 42000

=42000/240= 175

Since each 240 will give 2 defective monitors

175 will give= 175*2= 350

350 is less than 660 hence the managers claim is correct

Answer:

d=126 degrees

z=28 units

Answer:

Step-by-step explanation:

We can simplify (cross multiply) to get [tex]xy^2=wz[/tex]

Then we easily simplify to get [tex]y=\sqrt{\frac{wz}{x}},\:y=-\sqrt{\frac{wz}{x}};\quad \:w\ne \:0,\:x\ne \:0[/tex]

Answer:

1290

Step-by-step explanation:

15 x 86 = 1290

Answer:

o45

Step-by-step explanation:

Because 45 is the largest number.

Answer:

Step-by-step explanation:

A = (5,-5)

B = (-1,-5)

AB = (5 - - 1) + (-5 - - 5)

AB = 6

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

Mid Point CD

C = - 3,4

D = 6,3

Midpoint = (-3 + 6)/2 , (4+3)/2

Midpoint = 3/2, 7/2

Midpoint = 1.5, 3.5

Answer:

-1.5

Step-by-step explanation:

1,5-2=-.5

-.5*2=-1.5

Answer:

x = 2

Step-by-step explanation:

AC = BC

5x = 10

x = 2

Answer:

the answer is 12z-2

Step-by-step explanation:

hope it help

Answer:

12z-2

Step-by-step explanation:

We are given the expression:

10z+2z-2

and asked to combine like terms.

First, let’s analyze each term.

10z : has the variable “z”

2z : has the variable “z”

-2 : does not have a variable

The like terms in this expression are the 2 terms with the variable “z”. Add the 2 terms, 10z and 2z.

10z + 2z -2

(10z+2z)-2

(10+2)z-2

(12)z -2

(12z)-2

12z-2

The expression 10z+2z-2 when simplified is 12z-2.

Answer:

Y= - [tex]\frac{38}{9}[/tex] or -4.222...

Step-by-step explanation:

-5=y-[tex]\frac{7}{9}[/tex]

y=[tex]\frac{7}{9}[/tex]-5

y= [tex]\frac{7}{9} - \frac{45}{9}[/tex]

y = - [tex]\frac{38}{9}[/tex]

y= about -4.222...

Answer:

The answer is

2.4z+1.2z=0.7+6.5.

3.6z=7.2.

z=7.2/36.

z=2

Answer:

A. (5,2)

Step-by-step explanation:

If you go to solve the equation you would first try to get y by itself in the first equation and you would do that by subtracting x on both sides. Then you would have y=7-x and then you would plug the second equation in for the x and get the equation y=7-y-3 because you distribute the negative sign of the x to both the y and 3. Then you combine like terms and get y=4-y and then add the y to both sides and get 2y=4 and then divide both sides by 2 and get y=2. Then you plug in y in the first equation and get x+2=7. Then you subtract 2 from both sides and get x=5.

Answer:

The length of the frame is 17

Step-by-step explanation:

The computation of the length of the frame is shown below:

As we know that

The perimeter of a rectangle is

= 2 (length + width)

where,

let us assume the width be x

So, the length is x - 6

And, the perimeter is 80 yards

So, now put these values to the above formula

80 yards = 2 (x - 6+ x)

80 yards = 2 (2x - 6)

80 yards = 4x - 12

92 = 4x

x = 23

So, the length of the frame is

= 23 - 6

= 17

Answer:

4 is twice a number of 2 so the answer would be 14

Step-by-step explanation:

Answer:

x = 18

Step-by-step explanation:

Given:

Finding x for which 3b = 5a:

Answer:

x = 18

Step-by-step explanation:

Plug in 4x-7 for b and 2x+3 for a in 3b = 5a

3(4x-7) = 5(2x +3)

Solve for x:

12x-21 = 10x+15

2x = 36

x=18

Answer:

D: an endpoint at one end and an arrow on the other or answer hope this helped,

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

A line segment has an endpoint at both ends. A has arrows at both ends.A ray has a endpoint at one end and an arrow at the other.

Answer:

Number of nickels = 6

Number of dimes = 14

Number of quarters = 23

Step-by-step explanation:

Total number of coins = 43

Let number of nickels = n

Let number of dimes = d

Let number of quarters = q

[tex]n+d+q=43 ...... (1)[/tex]

Money in n nickels = [tex]n \times 0.05[/tex]

Money in d dimes = [tex]d \times 0.10[/tex]

Money in q quarters = [tex]q \times 0.25[/tex]

Total money = $7.45

[tex]0.05n +0.10d+0.25q = 7.45\\\Rightarrow 5n +10d+25q = 745 .... (2)[/tex]

The sum of the numbers of nickels and dimes is 3 less than the number of quarters.

i.e.

[tex]n+d=q-3[/tex]

Let us put the value  in (1):

[tex]q-3+q=43\\\Rightarrow 2q= 43+3\\\Rightarrow q =23[/tex]

Putting the value of q in (1) and (2):

n+d = 20 .... (3)

[tex]5n+10d+575 =745\\\Rightarrow 5n+10d =170\\\Rightarrow n+2d =34 .... (4)[/tex]

(4) - (3):

d = 14

Now, from (3):

n = 6

Number of nickels = 6

Number of dimes = 14

Number of quarters = 23

Answer:

B

Step-by-step explanation:

The equation of a horizontal line is

y = c

where c is the value of the y- coordinates the line passes through.

The line passes through (- 3, 8 ) with y- coordinate of  8, thus

y = 8 ← equation of horizontal line

Answer:

y=15+-6x

Step-by-step explanation:

y = -6x + 15

Reorder the terms:

y = 15 + -6x

Solving

y = 15 + -6x

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Simplifying

y = 15 + -6x

Step-by-step explanation:

[tex]6x - 15 = y \\ 6x = y + 15 \\ \frac{6x}{6} = \frac{y + 15}{6} \\ x = \frac{y + 15}{6} \\ x = \frac{y}{6} + \frac{5}{2} [/tex]