Mathematics College

Evaluate the expression when a=−15 and b=−5.

Answers

Answer 1

Answer:

-3/5

Step-by-step explanation:

(b + 14)/a = ((-5) + 14)/(-15) = -9/15 =-3/5

Related Questions

Thorton's department store has a 30% off sale this week what is the sale price for a pair of $24 jeans

Answers

Answer:

The Sale Price is $16.80 Dollars

Step-by-step explanation:

First I find out what 30% of 24 is.

24 * 30% = 7.2

Next we subtract.

24 - 7.2 = 16.80

So, the answer is 16.80

Hope this helps! :)

Are these congruent (PLEASE HELPPP)

Answers

Answer:

all of them are congruent

Step-by-step explanation:

HOPE IT HELPS YOU

A variable needs to be eliminated to solve the system of equations below. Choose the correct first step.

Which one is it??

Answers

Black F 19. I HOOKUP ! $100 & less. Deposit required . I CAN VERIFY

According to the graph, what is the experimental probability of selecting the letter C?

Number of occurrences of letters

16.7%

24%

16%

20%

Answers

Answer:

16%

Step-by-step explanation:

50 events and C shows 8

50/8 = 16%

Answer:

The Answer is 0.16 = 16%

solve x^2-3x+1=0 using completing the square method

Answers

This won't be the easiest way to do this problem but as your teacher requires it I will do it that way. But at the end I will show another way to do it with the quadratic formula.

First complete the square

x^2-3x+1=0

(x^2-3x+9/4)+1=9/4

(x-3/2)^2=9/4-1

(x-3/2)^2=5/4

x-3/2=±[tex]\sqrt{\frac{5}{4}[/tex]

x= 3/2±[tex]\frac{\sqrt5}{2}[/tex]

Done!

*Now this next way is not the way your teacher wants you to do it but I personally think its easier.

Just use the quadratic formula x=[-b±sqrt(b^2-4ac)]/2

x=[3±sqrt(9-4*1*1)]/2

x=(3±sqrt5)/2

x=3/2±sqrt5/2

We get the same answer but I think this way is easier. Now if your teacher ask for the top way just do the top way don't do the bottom because you will lose points, its just a shorter way to do things. Now I hope this helped and any additional questions about this just ask me in the comments.

Jack Lawler, a financial analyst, wants to prepare an article on the Shadow Stock portfolio developed by the American Association of Individual Investors (AAII). A list of the 30 companies in the Shadow Stock portfolio as of March is contained in the Excel Online file below. Use the spreadsheet to answer the following questions.

Jack would like to select a simple random sample of 5 of these companies for an interview concerning management practices.

a. The Shadow Stock companies are listed in column A of the Excel worksheet provided above. In column B we have generated a random number for each of the companies. Use these random numbers to select a simple random sample of 5 of these companies for Jack by finding the smallest random number, the second smallest random number, etc. in column B using an Excel function.

The random numbers corresponding to the first 5 companies selected are (to 5 decimal places):

First company (smallest random number) ____

Second company (2nd smallest random number) ____

Third company (3rd smallest random number) _____

Fourth company (4th smallest random number) _____

Fifth company (5th smallest random number)______

0.15106
0.78664
0.46736
0.31288
0.05743
0.96845
0.70824
0.43701
0.68709
0.49262
0.69531
0.04123
0.51061
0.23796
0.92181
0.91875
0.97469
0.78824
0.30299
0.61512
0.83291
0.05894
0.76809
0.85076
0.61597
0.42998
0.92434
0.36411
0.72285
0.29854

Answers

Last one of the first one try the last one first

On a certain map 4 inches represents 26 miles. What distance does 11 inches represent?

Answers

11 inches represents 71.5 miles

The following are the last 10 run scores Colin got in cricket:
23, 20, 4, 19, 28, 35, 25, 0, 1, 30
a) Work out Colin's mean score.
b) Colin plays cricket again on Sunday. He gets 35 runs.
What is his new mean score?

Answers

Answer:

a)18.8

Step-by-step explanation:

Basically, you have to add all the numbers from the data set (188) then divide them by 10 and that equals 18.8

The second part you have to add 32 to 188 ( which equals 210) and that by 11 which equals 20

Evaluate p(18,3) probability

Answers

Answer:

what?

Step-by-step explanation:

What is the total area? Use 3 for Pi.
Answer fast pls!! xx

Answers

To find out area of circle bit u do (pi x r^2) /4

(3 x 6^2)/4
(3x 36) / 4
108/4 = 27

So area of circle bit is 27

For square you do:
6x6 = 36

ANSWER:

36+27 = 63

The answer is 63m^3

The answer is 63 because when you do the area of each shape and add them you get 63.

4. A varies directly as r. If A = 12, when r = 2, calculate:
a) the value of A, when r=5

Answers

Answer:

The value of A ,when r=5 then A = 14

A varies directly to r means that A= kr
Substitute the given value : 12 = 2(k) —> k=6
Eqn : A=6r
When r=5,A= 6(5)= 30 thus A= 30

James bought a television that was on sale for 3/4 of the original price, the original price was 749.99 what was the sale price in dollars of the tv round your answer to the nearest cent

Answers

Answer:
3/4 x 749.99 ( 750 ) = 562 1/2
562 1/2 = 562.5
Nearest cent 562.10 = 563

Home Prices The median selling price of an existing home in the United States increased continuously over the period 2011–2013 at the rate of 8.5% per year from approximately $166,000 in 2011.27 Write down a formula that predicts the median selling price of an existing home t years after 2011. Use your model to estimate, to the nearest $1,000, the median selling price of an existing home in 2013 and 2015

Answers

Answer:

166,000(1 + 0.085)^t ; $195,000 ; $230,000

Step-by-step explanation:

Given that :

Rate of increase = 8.5% = 0.085 per year

Initial value ; price in 2011 (A) = $166,000

Formula to predict the median price t years after 2011 ;

At a continous rate :

Median price, P:

P = initial price (1 + rate)^t

P = 166,000(1 + 0.085)^t

t = time since 2011 ;

Median price of home in 2013:

t = 2013 - 2011 = 2

P = 166,000(1 + 0.085)^2

P = 166000(1.085)^2

P = 166000(1.177225)

P = 195419.35

P = $195,000 ( nearest $1000)

Median price of home in 2013:

t = 2015 - 2011 = 4

P = 166,000(1 + 0.085)^4

P = 166000(1.085)^4

P = 166000(1.385858700625)

P = 230052.54430375

P = $230,000 ( nearest $1000)

which has a greater quantity 50% or 30%

Answers

Answer:

50%

Step-by-step explanation:

50% is half of a quantity, while 30% is less than half.

Answer:

50% is greater than 30%

Step-by-step explanation:

ooooo

Pls answer allllll! I really need it

Answers

Answer:

7) I believe it is "The sum of the large rectangle is equal to the sum of the two smaller rectangles. 3 (x + 4)" But I am not sure.

8) Make it shorter and simpler by combining like terms

9) 5x , 2a + 3 + a + 4 , 6 + 2x + x2 + 1 + x

10) ac + bc = (a + b) c

Step-by-step explanation:

Solve the equation: 3x - 2/4 = 2x – 8 Explain your reasoning / show work:

Answers

X= -15/2
Reduce the fraction
Move terms
Collect like terms and calculate

X=-15/2 is the answer

What is the slope of the line: Y= -5x subtract 15?

Answers

Answer:-5

Step-by-step explanation:

m is considered the slope

y=mx-15

And in this situation m=-5

So slope = -5

Find the missing sides of the triangle.. Please Help

Answers

Answer:

there is no possible triangle

Step-by-step explanation:

an obtuse side has to have the largest angle, therefore there is no solution

Hadley had $25,000 he had lost 30%. what does he have left

Answers

The answer is $17,500 in US dollars tho hope this helped have a good dayyyy

Simplify each expression. Justify each step
4 x 9 x 50 =

Plz fast

Answers

Well, we are asked to simplify and solve this multiplication problem.
So, at first, this looks a little bit tricky but, we can actually break it down and then multiply with easy numbers.
First off, we can multiply 4 by 9 which is 45 however, we still have that major 50 so, to make it easier, we can just change the 50 to a 5 and then add the 0 at the end when we get our answer.

45 * 5
= 225

Lastly, we just need at put and add a zero (0) to our answer so, in conclusion, the answer to this question is: 2250.

PLS HELP I’LL MARK BRAINLIEST!!! ALSO THE ANSWER IS NOT 118!

Answers

Answer:

B. 128

Step-by-step explanation:

so the sum of the interior angle is 180

180 - 76 is 104

since both sides are the same divide 104 with 2 to get 52

to find x = 180 - 52 = 128

what is the equivilent of 2(6x+2)

Answers

Answer:

12x+4

Step-by-step explanation:

2(6x+2)

2multiply both 6x and 2

12x+4

hope it's helpful ❤❤❤❤

THANK YOU.

Answer:

12x + 4

Step-by-step explanation:

I used the distributive property

2(6x + 2)

12x + 4

Skye needs 50 g of sugar to make 30 biscuits.
She also needs
three times as much flour as sugar
two times as much butter as sugar
Skye is going to make 120 biscuits.
(a) Work out the amount of flour she needs.

Answers

Answer:600g

Step-by-step explanation: 50x3=150 150x4=600 since 30x4=120

A game is packaged in a box. Each game cube has a side length of 2 inches.
How many games can be packed inside of a box whose dimensions are 1 foot by 1 foot by 2 feet?

3456 games

8 games

432 games

8 cubic inches

Answers

Answer:

432

Step-by-step explanation:

6 games x 6 games x 12 games = 432 games

If the figure is a regular polygon solve for x 7x + 3

Answers

Answer:

The answer is 7 x + 3 =24 because its a problem solving

The requried simplified value of the 12 sided-polygon is given as 21.

What is a polygon?

Polygon is defined as a geometric shape that is composed of 3 or more sides these sides are equal in length, and an equal measure of angle at the vertex,

Examples of polygons, equilateral triangles, squares, pentagons, etc

Here,
The polygon given has 12 sides,
The angle of the polygon is given as,
7x + 3 = (n - 2) × 180/n
7x + 3 = (12 - 2) × 180/12

7x + 3 = 10×15
7x = 150 - 3
x = 147/7
x = 21

Thus, the requried simplified value of the 12 sided-polygon is given as 21.

Learn more about polygon here:

https://brainly.com/question/24464711
#SPJ5

Solve the formula for the specified variable.
I = Prt
P=

Answers

to isolate variable P, you would divide rt on both sides, leaving you with I/rt=P

Step-by-step explanation:

I= PRTP=I/RT

................

Simplify.
289
A)
17
18
C)
19
D)
20
I need help

Answers

Answer:

add my sc = bmic ava, no spaces

or add my discord = XoXo_ava

Step-by-step explanation:

have a good day bro

7/8 Of the distance between two cities is 147 miles. How far apart are the two cities?

Answers

Answer:

168

Step-by-step explanation:

First, find the unit rate (the amount it increases with every 1/8)

147 ÷ 7 = 21

Next, multiply that by the denominator (8)

21 x 8 = 168

The answer is 168

Answer:

1/168

Step-by-step explanation:

hope this is right but you divide both of them

Evelyn jogs around the park every 4 1/4 minutes. How many laps will she jog in 38 1/4 minutes?
34
43
42 1/2
9

Answers

Answer:

Step-by-step explanation:

38.25 minutes × (1 lap)/(4.25 minutes) = 9 laps

9 laps is the answer

If $5.000 is invested at a rate of 8%, compounded weekly, find the value of the investment after 7 years.

Answers

Simple Interest: A = P(1+rt)

P: the principal, the amount invested
A: the new balance
t: the time
r: the rate, (in decimal form)
Ex1: If $1000 is invested now with simple interest of 8% per year. Find the new amount after two years.
P = $1000, t = 2 years, r = 0.08.
A = 1000(1+0.08(2)) = 1000(1.16) = 1160
i found this online

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