Mathematics College

Suppose that the functions q and r are defined as follows.
q(x) = -x-1
r(x) = 2x² – 2
Find the following.
(q*r)(-5) =
(r*q) (-5) =​

Answers

Answer 1

Step-by-step explanation:

r(-5) = 2*25 - 2 = 48

Q(-5) = 5 - 1 = 4

Related Questions

write the ration in following three ways
12 mangoes to 36 fruits​

Answers

12/36, 12:36, and 1:3 I believe hope this helps

Out of 498 applicants for a job, 187 have over 10 years of experience and 127 have over 10 years of experience and have a graduate degree. Step 1 of 2 : What is the probability that a randomly chosen applicant has a graduate degree, given that they have over 10 years of experience

Answers

Answer:

the probability that randomly selected applicants over 10 years of experience is 0.6791

Step-by-step explanation:

The computation of the probability that randomly selected applicants over 10 years of experience is as follows:

Total would be

= 187 have 10 + years experience

Now

P(graduate | 10+) = (graduate and 10+ years experience) ÷ (10 + years of experience)

= 127 ÷ 187

= 0.6791

Hence, the probability that randomly selected applicants over 10 years of experience is 0.6791

A diagram of a swimming pool is shown.
3.5 m
What is the approximate circumference of the swimming pool? Use 3. 14 as an estimate for .
O A. 7m
OB. 11 m
OC. 22 m
OD. 28 m

Answers

Answer:

Yeah the answer is 22

Step-by-step explanation:

Good job! :)

A cell phone is originally priced at $80. The online retailer gives a discount and the cell phone is now priced at $40. Enter the percentage discount for the cost of the cell phone.

Answers

Answer: The percent that the phone is on sale is 50%. The discount if 40 dollars.1/2 of the total will be taken off.

[tex]\frac{1}{2} x \frac{3}{4}[/tex]

Answers

I am pretty sure it is0.375

What involves examining and evaluating information, as well as weighing alternatives and considering consequences?

Answers

Answer: Critical Thinking.

Step-by-step explanation:

Critical thinking is the process of conceptualizing, applying, analyzing, synthesizing, and/or reviewing data acquired from, or generated by, observation, experience, reflection, reasoning, or communication actively and skillfully as a guide to intellectually disciplined belief and action.

r
__ = 1.5
14

what does r equal

Answers

Answer:

answer is r=21

Step-by-step explanation:

multiply 1.5 with 14

When is subtraction always the first operation done in an expression? a. When it is the first operation in an expression, from left to right. b. When it follows addition in an expression. c. When it is in parentheses in an expression. d.Never. 1.

Answers

Answer:

Naruto usamaki is the greatest hokagey in the leaf village

Step-by-step explanation:

I took the test on edge

The variables y and x have a proportional relationship, and y = 9 when x = 2. What is the value of y when x = 3? Enter your answer as a decimal in the box. ​

Answers

If they have a proportional relationship, then set them up as a proportion

9/2 = y/3.....9 to 2 = y to 3
cross multiply
(2)(y) = (9)(3)
2y = 27
y = 27/2
y = 13.5 <== so when x = 3, y = 13.5

Could someone pls help me

Answers

Answer: Ik an easier way to answer it without waiting for someone to answer it for you. So all you have to do is search up the question for each expression and you'll find it. I remember doing this yesterday for nearly that exact worksheet but i forget the answers and cant go back so im just telling you how to find the answers your welcome

Step-by-step explanation:

The area of a square field is 4,900 square meters. How long is one side
of the field?
O 70 meters
O 140 meters
O 560 meters
O 1225 meters

Answers

Answer:

1225

Step-by-step explanation:

divide by 4 because a square has 4 sides

Plz help me it says show work to I’m confused

Answers

Answer:

1 = 7x=42 (divide both sides by 7)

7x/7 =42/7

x=6

2.=9y=81 (divide both sides by 9)

9y/9y= 81/9

y=9

3.= –40=8a (divide both sides by 8)

–40/8= 8a/8

a=5

4.=y divided 11=12

y=11 multiplied by 12

y= 132

5.= –15y=135( divide both sides by –15)

–15y/–15=135/–15

y= –9

6.= 17p=51(divide both sides by 17)

17p/17=51/17

p=3

7.= –65= –13w (divide both sides by 13)

–65/–13=–13w/–13

w=5

8.=y/–2=4

(cross multiply)

y/–2=4/1

4 multiplied by –2= –8

therefore:y= –8

Step-by-step explanation:

I HOPE THIS HELPED :)

Answer:

a) 7x=42

Step-by-step explanation

use the co-efficient of the unknown to divide both sides

7x=42

7x/7=42/7

x=6

9y=81

9y/9=81/9

y=9

-40=8a

is the same thing as

-8a=40

-8a/-8=40/-8

a=-5

y+11=12

y=12-11

y=1

-15y=135

-15y/-15=135/-15

y=9

17p=51

17p/17=51/17

p=3

-65=-13w

13w=65

13w/13=65/13

w=5

y/-2= 4

cross multiply y=-8

If you multiply a number by 3 and then subtract 5, you will get 40. What is the number?

Answers

Answer:

15

Step-by-step explanation:

Solve the problem backwards and it gives you the answer. Hope this helps

please help y'all no matter what I do I cannot figure this out please help what number would you add to both sides to complete the square in this trinomial x ^ 2 + 6x = -5 and the options are 6 , 9 , 12 and please show how you did it so I can figure out the rest of my homework ​

Answers

Answer:

Im sorry im not sure

Step-by-step explanation:

Please help.. Please. Is this a positive trend or negative trend or no trend ​

Answers

Answer:

it's a no trend cause its literally nothing but dots

Find the area of triangle abc

Answers

Ne demek istoyusun anlamadım

for each one fifth, use a horizontal line or lines to show fractions equivalent to 1/5 and write the equivalent fractions

Answers

Answer:

2/10

Step-by-step explanation:

PLEASE ANSWER THIS ASAP, I WILL BE GIVING YOU A THANKS! ..

Answers

Answer:

D

Step-by-step explanation:

7 - z = 3 + z + 4 - 2z

7 - 3 - 4 = z - 2z + z

0 = 0 (Infinitely many solutions)

5(a + 4) - 15 = -5(a - 1)

5a + 20 - 15 = -5a + 5

5a + 5a = 5 - 20 + 15

10a = 40

10a/10 = 40

a = 4

(one solution)

-2d + 4d - 4 = 5 + 3(d - 3)

2d - 4 = 5 + 3d - 9

2d - 3d = 5 - 9 + 4

- d = 0

d = 0

(one solution)

-11(n - 2) + 8(n + 1) = -3(n + 10)

-11n + 22 + 8n + 8 = -3n - 30

-11n + 8n + 3n = -30 - 22 - 8

0 = -60

(no solutions)

What is 6% of 15? Use a fraction to solve

Answers

Answer:

0.9

Step-by-step explanation:

can't really Explain, its simple mathamatics 6% of 15 = 0.9

SOMEONE HELP PLEASE !!!

n^2 - m; use m = 7, and n = 8

Answers

Answer:

57

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Step-by-step explanation:

Step 1: Define

n² - m

m = 7

n = 8

Step 2: Evaluate

Substitute:                    8² - 7Exponents:                   64 - 7Subtract:                       57

which of the followiing units the Metric System Identify 5 units

Answers

ANSWER:

MEASURE OF BASIC SI UNIT

Distance meter

volume(capacity) liter

mass(weight) gram

time. seconds

Temperature. Degree (Celsius)

PLEASE ANSWER ASAP FOR BRANLEST!!!!!!!!!!!!!!!
Solve,Check, show work:

a) 2x + 7 = 15
b) 3/4x + 8 = -12

Answers

A)11

B)0.1875

Step-by-step explanation:

2x+7=15

2x+7-7=15+7

2x=22

2x/2=22/2

3.4x+8=-12

3/4x+8-8=-12+8

3/4x=-4

3/4divided by 3/4=-4 divided by 3/4

x=0.1875

Which three side lengths best describe the triangle in the diagram?
O NG
1
2
3
0 1 2
3 4
5 6 7 8 9 10 11 12 13
LLLLLLL
12 13
5
8 9 10 11
4
O NCS 2 3
2
O NOS
O A. 5 cm, 12 cm, and 13 cm
OB. 5 cm, 10 cm, and 13 cm
O C. 4 cm, 8 cm, and 12 cm
OD. 7 cm, 12 cm, and 13 cm

Answers

Step-by-step explanation:

Option A best describes the diagram given above.

Give the name (monomial,
binomial, trinomial etc.) and
degree of the polynomial.
3x – 4

Answers

Answer:

degree- 1

name- binomial i think

neeed helppp pleasseeee

Answers

-1/24 is the answer

1. A 15-pound bag of sugar is being split into containers that hold of a pound. How many
containers of sugar will the 15-pound bag create?
The answer is: 17 1/7 containers. The work is on the photo

Answers

Answer:

yes

Step-by-step explanation:

yes

Write an equation of the line that passes through (−2,3) and (0,8).

Answers

Answer:

[tex]y = \frac{5}{2}x + 8[/tex]

Step-by-step explanation:

(-2 , 3 ) ; (0 , 8)

Slope = [tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]

          [tex]= \frac{8-3}{0-[-2]}\\\\=\frac{5}{0+2}\\\\=\frac{5}{2}[/tex]

   m = 5/2 ; (0 , 8)

Equation: y -y1 = m(x -x1)

               [tex]y - 8 =\frac{5}{2}(x - 0)\\\\y - 8 =\frac{5}{2}x\\y = \frac{5}{2}x + 8[/tex]

The top of a 25-foot ladder is sliding down a wall at a rate of 3 feet per second. When the top of the ladder is 15 feet from the ground, what is the rate of change between the bottom of the ladder and the wall?

Answers

Answer:

1.8ft/s

Step-by-step explanation:

Using the formula for calculating Speed as shown:

Speed = Distance/Time

Time = Distance/Speed

t = d/s

Given

d1 = 25 foot

s1 = 3ft/s

d2 = 15ft

Required

s2

Using the formula;

d1/s1 = d2/s2

s2 = s1d2/d1

s2 = 3*15/25

s2 = 45/25

s2 = 1.8ft/s

Hence the rate of change between the bottom of the ladder and the wall is 1.8ft/s

Hello? STOP RIGHT THERE.... Please help me with this.

Answers

Answer: THE ANSWER IS 2 :)

Step-by-step explanation:

3(q+2)  Do distributive property

3q=6 Divide 3q to both side

3q = 3q

q= 2       This is the answer

Passes through (-4,-5) Slope = -314
Please Helppppp!!!!!!!!!!!!

Answers

Answer:

[tex]y=-314x-1261[/tex]

Step-by-step explanation:

When we are writing an equation we have to put it in slope-intercept-form [tex]y=mx+b[/tex]. We already know the slope it's -314, we replace m with the slope. Now we have to find b which is the y-intercept. So what we have to do is plug in the ordered pair into the equation. -4 for x and -5 for y.

[tex]y=mx+b\\-5=-314(-4)+b[/tex]

Now we solve

[tex]-5=-314(-4)+b\\-5= 1256+b\\b=-1261[/tex]

So now that we know everything we need we plug in and....

[tex]y=mx+b\\y=-314x-1261[/tex]

we've got our equation!

Answer:

The line slants upward, so the slope is positive.

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