Mathematics College

What is the value of the expression?

Answers

Answer 1

Answer:

None of the above

Step-by-step explanation:

40-8/2=32/2=16

Related Questions

what does the y equal in the system of equations y= 2x-7 and 5x+2=4

Answers

Answer:

y = -31/5

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtract Property of Equality

Algebra I

Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

y = 2x - 7

5x + 2 = 4

Step 2: Solve for x

Define equation: 5x + 2 = 4Subtract 2 on both sides; 5x = 2Divide 5 on both sides: x = 2/5

Step 3: Solve for y

Define equation: y = 2x - 7Substitute in x: y = 2(2/5) - 7Multiply: y = 4/5 - 7Subtract: y = -31/5

Help I’ll mark brainliest

Answers

Answer:

ACD

Step-by-step explanation:

Judy is selling small candles at the fair for $4 each and large candles for $6 each. She collected $144 selling a total of 28 candles. How many of each candle did she sell? Use x for the small candles and y for the large candles.

small candle x= blank candles
large candle y = blank candles

Answers

Answer:

Number of small candles = 12

Number of large candles = 16

Step-by-step explanation:

Total candles = 28

x + y = 28 ---------------(I)

Cost of 'x' small candles = 4 *x = 4x

Cost of 'y' large candles = 6 *y = 6y

Total amount = $144

4x + 6y = 144 -------------(II)

Multiply equation (I) by (-4) and then add the equation. So, x will be eliminated and we can find the value of 'y'

(I) * (-4) -4x - 4y = -112

(II) 4x + 6y = 144 {Now, add}

2y = 32

y = 32/2

y = 16

Plug in y = 16 in equation (I)

x + 16 = 28

x = 28 - 16

x = 12

Answer:

small candles-x

large -y

144-4x=6y

28-x=y

28-y=x

(28-x)6+4x=144

168-6x+4x=114

-2x=-54

2x=54

x=27

27 small and 1 large

What expression is equal to -8(4y)

Answers

Answer:

32y

Step-by-step explanation:

take off the y then do the equation -8×4=32 then put the y back on an theres your answer

Cheyenne's car is in the shop, so she needs to rent a car for 4 days. The cost of a rental car is $24.99 per day, and she will be charged $0.18 per mile for every mile she drives over 200 miles. If she drives 300 miles and the sales tax she pays on the rental is 5.5%, how much will she pay for this rental?

1) Find the cost to rent the car for 4 days.

2) How many miles did Cheyenne drive over 200 miles? Remember to look at the difference between the total miles driven and the miles over 200.

3) Find the cost for miles over 200.

4) Find the total cost including the cost to rent and the cost for miles.

5) Find the total with tax. The multiplier is 1.055
A.
$124.45
B.
$117.96
C.
$130.94
D.
$99.96

Answers

Father

Step-by-step explanation:

Hhhh

The restaurant sold coffee and tea during the breakfast shift. The number of cups of tea they sold was 6 more than 1/3 of the number of cups of coffee sold. If the total cups of coffee and tea sold was 70, how many cups of each were sold?

Answers

Answer:

cups of tea = 22

cups of coffee = 48

Step-by-step explanation:

c = coffee

t (tea) = 6 + 1/3c

t + c = 70

c + 6 + 1/3c = 70

4/3c + 6 = 70

4/3c = 64

4c = 192

c = 48

t = 70 - 48 = 22

5. Which of the following represent the greatest rate? *
10 points
O (A) 0.5 mile in 10 minutes
O (B) 6 miles in 60 minutes
O (C) 27 miles in 300 minutes
O (D) 3 miles in 24 minutes

Answers

Answer:

the answer is c

Step-by-step explanation:

because 27 × 300 equals 8100 miles plus it's the most out of all the other answers

I think the answer is C i’m sorry if wrong

if 3/4g = -12 what is g

Answers

Answer:

g = -16

Step-by-step explanation:

-12/3 = -4

-4 x 4 = -16

Please help my last point and I’m confused show your work please

Answers

Answer:

A, C, F

Step-by-step explanation:

A = C

75 = 75 because X = 16

180 - 75 so D and B is 105

The amount of time it takes Isabella to wait for the bus is continuous and uniformly distributed between 4 minutes and 18 minutes. What is the probability that it takes Isabella more than 7 minutes to wait for the bus

Answers

Answer:

0.25 or 25% probability

Step-by-step explanation:

The lower limit in this question = a

The upper limit = b

P(X<=x) = x-a/b-a

a = 4

b = 8

The question says it is uniformly distributed between 4 minutes and 8 minutes

Probability that it takes her more than 7 minutes to wait for the bus

P(X<=7) + P(X>7)= 1

We are to get P(X>7)

= 1 - (7-4/8-4)

= 1-3/4

= 1-0.75

= 0.25

= 25% probability it takes her more than 7 minutes to wait

A bamboo plant is 23 cm high and grew 16 cm each day. What is the rate of change?

Answers

the rate of change is 7cm

1. Sand falling from a chute forms a conical pile whose altitude is always equal to 4/3 the radius of the base. (a) How fast is the volume increasing when the radius of the base is 3 ft and is increasing at a rate of 3 in/min

Answers

Answer:

The volume is increasing at a rate of 16286 in³/min.

Step-by-step explanation:

a) The volume of a cone is given by:

[tex] V = \frac{1}{3}h\pi r^{2} [/tex]

Where:

r: is the radius

h: is the height

The rate of change of the volume can be calculated by using the chain rule:

[tex] \frac{dV}{dt} = \frac{\pi}{3}[\frac{dh}{dt}r^{2} + h\frac{d(r^{2})}{dt}] [/tex]

Since h = 4/3 r we have:

[tex] \frac{dV}{dt} = \frac{\pi}{3}[\frac{d(\frac{4r}{3})}{dt}r^{2} + \frac{4r}{3}\frac{d(r^{2})}{dt}] [/tex]

[tex] \frac{dV}{dt} = \frac{4\pi}{9}[\frac{dr}{dt}r^{2} + r\frac{d(r^{2})}{dt}] [/tex]

[tex] \frac{dV}{dt} = \frac{4\pi}{9}[\frac{dr}{dt}r^{2} + 2r^{2}\frac{dr}{dt}] [/tex] (1)

With:

[tex]\frac{dr}{dt}[/tex] = 3 in/min

[tex]r = 3 ft*\frac{12 in}{1 ft} = 36 in[/tex]

And by entering the above values into equation (1) we have:

[tex] \frac{dV}{dt} = \frac{4\pi}{9}[(3 in/min)*(36 in)^{2} + 2*(36 in)^{2}*3 in/min] [/tex]

[tex]\frac{dV}{dt} = 16286 in^{3}/min[/tex]

Therefore, the volume is increasing at a rate of 16286 in³/min.

I hope it helps you!

Joe earns $1,475 per month as a clerk at Elm City Sporting Goods. How much does he earn in a year? Explain how you got your answer.

Answers

1475X12
As there are 12 months in a year
=17700

Answer:

$17,700

Step-by-step explanation:

multiply the monthly by 12 for the 12 months of the year

Kylie use the number 400 represent a location 400 miles north of the equator.She uses the number -2,000 to represent a location 2,000 miles south of the equator.Which number would represent a location on the equator?

Answers

Okay this ones tricky, 30/12 is 2.5 so in 12 mins she does 2.5?

Pam ordered a circular hot tub cover with a diameter of 80 inches. Find the area of the hot tub cover.

Answers

Answer:

1600π or about 5026.5 square inches

Step-by-step explanation:

Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)

Answer: I wonder why the hot tub didn't already come with a cover

Step-by-step explanation: 5026.5 inches²

to the nearest unit, what is the perimeter of this pentagon ? pls help

Answers

Answer:

Step-by-step explanation:

You are given a line with a slope of 4 and a point on the line of (-1, 3). Write
the equation in point slope form, then slope-intercept form.

Answers

Answer:

Point-slope form: [tex]y-3 = 4(x+1)[/tex]

Slope-intercept form: [tex]y=4x+7[/tex]

Draw a tape diagram to represent the problem.
In Mr. Dutton's class there are 4 boy for every 5 girl ?

Use the tape diagram above to answer the question.
If there are 16 males, how many females are in Mr. Dutton's class?

If there are 18 student in Mr. Sutton's class, how many boy are there? How many girl are there?

Answers

Answer:

uhijhkhyhbjgyvhfthvhtfm

Step-by-step explanation:

yglughujgyjyuhjvgyjhbygjhgjjyjgjjhbjgbjhjhbj

The Pelicans won 16 games last year. This year the Pelicans won 20 games. What is the percent increase in the number of games the Pelicans won compared to last year?

Answers

there would be a 4% increase from last year

Answer:

I believe the answer to your question is 25%!

Step-by-step explanation:

If this is wrong, tell me so i can improve my skills.

Have a great day

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