Evaluate the Expression: 8r - 4w - 9 when r = 7 and w = 4

Answers

Answer 1

Answer:

= 31

Step-by-step explanation:

So first plug in the numbers 8(7) - 4(4) - 16

then solve

56 - 16 - 9 = 31

Answer 2

Answer:

31

Step-by-step explanation:

8r - 4w - 9 when r = 7 and w = 4.

~Substitute

8(7) - 4(4) - 9

~Simplify

56 - 16 - 9

~Subtract

40 - 9

~Subtract

31

Best of Luck!


Related Questions

How many gallons of a 70% antifreeze solution must be mixed with 100 gallons of 30% antifreeze to get a mixture that is 60% antifreeze?

Answers

Answer:

350 gallons

Step-by-step explanation:

Let x = number of gallons of 70% solution

   100 = number of gallons of 25% solution

Then, x + 100 = number of gallons of 60% solution

0.70x + 0.25(100) = 0.60(x + 100)

0.70x + 25 = 0.60x + 60

0.10x = 35

      x = 350 gal

Mix 350 gal of 70% solution with 100 gal of 25% solution to obtain 450 gal of 60% solution.

Answer: Add 315 gallons of 70% antifreeze to 90 gallons of 25% antifreeze to make a 60% mixture.

True or False

Gross income is the amount of money you earn before taxes
________________________

Net income is after taxes.
________________________

There are 24 pay periods in a year if you are paid monthly.
________________________

Regular or straight time pay is calculated by the hourly rate X hours worked.
___________________________

Piecework is when you are paid for each item of work that you do.
__________________________

Fill in the blank

When I earn extra money based on the amount I sell, this is called____________________________.

Overtime begins when a person works more than _____ hours per week.

Social Security, Federal , and ______________ taxes will be deducted from an employee’s paycheck.

Overtime Pay is an Act covered by ______________________________________________________.
Annual salary is calculated by dividing the salary by _____________________________________.

Answers

Answer:

True

Step-by-step explanation:

Gross income is prior to any deductions, expenses, or other appropriations have been taken out.

2. True

Net income is after taxes

3. False

This would be biweekly if 24 payperiods

4. True

5. True

Fill in blank

1. Commission (I think)

2. 40

3. State

4. Dept of Labor; act is called Fair Labor Standards Act

5. Fair Labor Standards Act

6. if you need to know annual salary, then mulitply your gross income by the number of payperiods in one year, if you need to know your monthly salary then divide the annual salary by 12 to get monthly.

Jen is single and owns a condo. Her condo costs $120,000 and she has a $100,000 mortgage at 5%. She pays $3,600 in property tax and contributes $500 to ber church per year. Does she use Iternized Deduction or Standard Deduction?​

Answers

Answer:

`298,483

Step-by-step explanation:

If you can answer my riddle I will mark as brainlest ok?
RIDDLE: If you give me food I will live but if you give me water I will die. What am I?

Answers

Answer:

fire

Step-by-step explanation:

if you give fire food or fuel it will still be alive

but if you give it water it will go out

PLZ GIVE BRAINLEST

Answer:

The answer is a fire because if you put water on a fire, it will die out, but if you put stuff in the fire it will live on.

6.) The average delivery charge for a refrigerator is $54. The standard deviation is 53. Find the
range in which at least 75% of the data values will fall.
1

Answers

Answer:

88.9%

Step-by-step explanation:

$-6.97-$114.96

Using the invNorm function on the calculator, the range of 75% of the data values is $-6.97 to $114.96. In stats, not everything makes sense.

To use the invNorm function, go to 2nd vars, invNorm. Put .75 in the area, 54 in the mean, and 53 in the standard deviation.

Find the exact value of tan^-1(1)
A. Pi/4
B. 7pi/4
C. 5pi/4
D. 3pi/4

Answers

the answer to this equation is C. Hope this helps!

Mr. Parks spent $96.30 on 3 hats and 6 key chains. a. If each hat cost $15.50, how much did each key chain cost?

Answers

8.30 per key chain

3 times 15.50 eqauls 46.50
96.30-46.50= 46.80
46.80 divided by 6= 8.40

Based on the information given the amount that the key chain cost is $8.3

Cost:

Let x represent the cost of the key chain

$96.30 = 3($15.50) + x

x = $96.30 - $46.50

x= $49.8

Hence:

Cost per key chain= $49.8/6

Cost per key chain= $8.3

Inconclusion the amount that the key chain cost is $8.3

Learn more about cost here:https://brainly.com/question/1153322

A river flows due south at 1.4 mi/h. In what direction should the swimmer head, at a velocity of 3 mi/h, in order to arrive at a landing point due east of his starting point? (Round your answer to one decimal place.)

Answers

Solution:

It is that a river is flowing in the south direction with a speed of [tex]$v_r$[/tex]1.4 mi/h.

A swimmer wishes to cross the river in a horizontal direction so that he lands at a point which is due east of his starting point.

The speed of the swimmer is [tex]$v_s$[/tex] = 3 mi/h

Therefore he has to swim in such a direction that his resultant is in the direction east to his starting point.

Let this angle be θ.

Therefore, from the figure,

[tex]$\sin \theta = \frac{v_r}{v_s}$[/tex]

[tex]$\sin \theta = \frac{1.4}{3}$[/tex]

[tex]$\theta = \sin^{-1}(0.46)$[/tex]

  [tex]$=27.4^\circ[/tex]

Therefore, the swimmer has to swim in the northeast direction making an angle of (90+27.4) = 117.4° with the direction of flow of river (i.e. south).  

anyone know thisssss​

Answers

See the attachment.....

There are 18 girls and 24 boys who want to participate in a trivia challenge. If each team must have the same ratio of girls and boys, what is the greatest number of teams that can enter? Find how many boys and girls each team would have.

Answers

Answer:

4 team could enter  5 people in each team

Step-by-step explanation:

there will be 6 teams, each team having 3 girls and 4 boys

Step-by-step explanation:

6*3=18

6*4=24

PLS HELP
4. What does the y-intercept of the graph of Monday's storm mean? Does the y-intercept of the graph of Thursday's storm have the same meaning?

Answers

Answer/Step-by-step explanation:

✅The y-intercept of the graph of Monday's storm is the amount of precipitation recorded at the beginning of the tracking or when the tracking started.

✍️The y-intercept of the graph of Monday's storm is 0 mm, when time = 0 min.

✅The y-intercept of the graph of Thursday's storm also has the same meaning as that of Monday's storm.

✍️The y-intercept of the graph of Thursday's storm is 0 mm, when time = 0 min.

Find the slope of the line graphed below.

Answers

Answer:

(rise/run) 5/4

decimal ver: 1.25

Answer:

[tex]\frac{5}{4}[/tex]

Step-by-step explanation:

The line passes trough the points (2, 2) and (-2, -3).

[tex]m=\frac{rise}{run}=\frac{-3-2}{-2-2}=\frac{-5}{-4} =\boxed{\frac{5}{4}}[/tex]

Hope this helps.

What should be subtracted from 538 to get reminder 3 when divided by 11

Answers

Answer:

4

Step-by-step explanation:

Answer: 7

Step-by-step explanation: 538÷11=48 + 10

so to get remainder 3 subtract 7 from 538

Area can be defined as the number of square units it takes to cover the inside
of a figure
A. True
B. False

Answers

Answer:

A

Step-by-step explanation:

It is making me add 20 characters to my answer so ignore this :)

Answer:

its TRUE

Step-by-step explanation:

The number of miles driven by a truck driver falls between 300 and 700, and follows a uniform distribution.
a. Find the probability that the truck driver goes more than 650 miles in a day.
b. Find the probability that the truck drivers goes between 400 and 650 miles in a day.
c. At least how many miles does the truck driver travel on the furthest 10% of days?

Answers

Answer:

(A) 0.125 probability

(B) 0.625 probability

(C) 660 miles

Step-by-step explanation:

The distance driven by a truck driver daily, falls between 300miles and 700miles and follows a uniform distribution.

(A) The probability that the truck driver goes more than 650 miles a day is:

[700 - 650] / [700 - 300]  = 50/400  = 0.125

(B) The probability that the truck driver goes between 400 and 650 miles a day is:

[650 - 400] / [700 - 300]  = 250/400  = 0.625

(C) The minimum number of miles the truck driver travels on the furthest 10% of days is given thus:

10% of 400  = 40

Subtract this from the farthest distance;

700miles - 40miles  = 660miles

In ΔIJK, j = 7.6 cm, k = 7.8 cm and ∠I=27°. Find the length of i, to the nearest 10th of a centimeter.

Answers

Answer:

3.6

Step-by-step explanation:

TRUST ME LOL

What does 0.05 x 300 represent?

Answers

Answer:

15

Step-by-step explanation:

Write an equation for 51 divided by 3 is k

Answers

Answer:

51/3 = 17

Step-by-step explanation:

3 can go into 5 one time (1)

5 minus 3 equals 2.

Bring down the one, make sure the 2 and 1 are beside. (21)

How many times can 3 go in to 21 ?

7 !

So, put 1 and 7 together, and get 17!

Max pays a flat rate of $85 for his cell phone. He is also charged $0.15 for every text that he sends. His cell phone bill can be no more than the amount he has budgeted for it each month. If x represents the number of texts and y represents his budgeted amount, which inequality represents Max's cell phone budget each month? (3 points)
a $0.15x + $85 ≥ y
b $0.15x + $85 ≤ y
c $0.15x - $85 ≥ y
d $0.15x - $85 ≤ y​

Answers

answer : b, .15x + 85 ≤ y

helppppp please I will give brainliest​

Answers

Answer:

y=3/4x

Step-by-step explanation:

Evaluate the following expression. Express your answer in simplest form.
3
16
+
5
18
1
2
5
16
10
32

Answers

Answer:

518125161348

Step-by-step explanation:

                316

518125161032

-------------------------

518125161348

Which polynomial was factored? x2 – 2x – 8 x2 + 2x – 8 x2 – 2x – 4 x2 + 2x – 4

Answers

Answer:

x^2+2x-8

Step-by-step explanation:

x^2+2x-8 = (x+4)(x-2)

Answer: A. x^2 -2x -8

Step-by-step explanation:

What is the sum of –356.1 + 258.6? –614.7 –97.5 97.5 614.7

Answers

Answer:

The answer is -97.5

Answer:

-97.5

Step-by-step explanation:

um yas

Marlene made a table to relate the number of T-shirts to the total cost. How can
you tell from the table that the relationship is not proportional?
Number of T-shirt
1
2
3
4
A
The number of T-shirts increases in intervals of one.
B
The rule of multiplying by 8 works for all but 4 T-shirts.
C
The number of T-shirts increases by a different amount than the total cost does.
D
All of the numbers of T-shirts can be multiplied by the same amount to get the cost.

Answers

Answer:

The Correct answer would be B.  

The rule of multiplying by 8 works for all but 4 T-shirts

Step-by-step explanation:

Answer:   B) The rule of multiplying by 8 works for all but 4 T-shirts.

Step-by-step explanation:

Got ir right on Time4Learning

Compare using <, > or = 7 2/5 _ 7 3/7 ​

Answers

Answer:

<

Step-by-step explanation:

7 2/5 = 37/5

7 3/5 = 52/7

~~~~~~~~~~~

37/5 times 7 = 259/35

52/7 times 5 = 260/35

~~~~~~~~~~~~~~~~~

Subtract then you difference is one, therefor 7 3/5 is greater.

Find the limit. Use l'Hospital's Rule if appropriate. If there is a more elementary method, consider using it. lim xâ[infinity] x + x2 1 â 5x2

Answers

Answer:

[tex]\frac{1}{5}[/tex]

Step-by-step explanation:

Given the expression;

[tex]\lim_{x \to \infty} \dfrac{x+x^2}{5x^2}[/tex]

To find the limit of the function, we need to first divide through by the highest degree if x i.e x² as shown;

[tex]\lim_{x \to \infty} \dfrac{\frac{x}{x^2} +\frac{x^2}{x2}}{\frac{5x^2}{x^2} }\\ \lim_{x \to \infty} \frac{\frac{1}{x}+ 1 }{5}\\As \ x \ tends \ to \ \infty, \ \frac{1}{x} \ tends \ to \ zero. \ Hence;\\ \lim_{x \to \infty} \frac{\frac{1}{x}+ 1 }{5} = \frac{0+1}{5}\\= \dfrac{1}{5}[/tex]

Hence the limit of the function as x tends to infinity is [tex]\frac{1}{5}[/tex]

The mass of Earth is 5.9722×1024 kg. The mass of Venus is 4.8685×1024 kg. What is the difference between the mass of Earth and the mass of Venus?

Answers

Step-by-step explanation:

5.9722x1024 - 4.8685x1024

1130.1888

Use the information mZ1 = (3x + 30), m42 = (5x – 10°, and x = 20, and the theorems you have learned to
show that 1 || m.

Answers

Answer:

Step-by-step explanation:

First you have to do 2 + 2=

Calculate the insurance costs.
The Greene family obtains bodily injury and property damage automobile insurance in the amount of 50/100/10. The car
that they insure is not driven to work, and no male drivers under twenty-five use the car.
a. What does the Greene family pay as an annual premium?
b. How much would it cost him to purchase insurance in the amount of 100/300/25?
c. What is the difference in cost?

Answers

Answer:

a. What does the Greene family pay as an annual premium? $450.60

b. How much would it cost him to purchase insurance in the amount of 100/300/25? $480.70

c. What is the difference in cost? $30.10

(っ◔◡◔)っ ♥here you go♥

What equation shows how to use equivalent fractions to evaluate 2/5 + 3/4

Answers

Answer:

Step-by-step explanation:

Exact form: 23/20

Decimal form: 1.15

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