Leah plans to purchase merchandise from a department store that is valued at $100. She will use $20 in-store bucks that she has earned
plus a 30% discount coupon to reduce her final cost. What is the final cost of the items (before tax) if the $20 store bucks are applied before
the 30% discount?

Answer:

a(7) = -32.

Step-by-step explanation:

if a(x) = -5x+8

then a(7) = -5(7) + 8.

-5(7) +8

-40+8

-32.

I hope this helps!

Answer:

62

Step-by-step explanation:

100 • cos52°

Answer:

C. Yes.  Daniel and Elizabeth each read 15 pages an hour

Step-by-step explanation:

30 + 45 = 75

3 + 2 = 5

75/5 = 15/h

Hope it helps, sorry if its wrong.

Given:

[tex]m\angle ABC=46^\circ[/tex]

BD bisects angle ABC.

To find:

The [tex]m\angle ABD[/tex].

Solution:

It is given that, BD bisects angle ABC. It means, BD divides the angle ABC is two equal parts. So,

[tex]m\angle ABD=m\angle DBC=\dfrac{\angle ABC}{2}[/tex]

We need to find [tex]m\angle ABD[/tex], so

[tex]m\angle ABD=\dfrac{\angle ABC}{2}[/tex]

[tex]m\angle ABD=\dfrac{46^\circ}{2}[/tex]

[tex]m\angle ABD=23^\circ[/tex]

Therefore, the [tex]m\angle ABD[/tex] is 23°. Hence first option is correct.

Answer:

(6, 4)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Algebra I

Step-by-step explanation:

Step 1: Define Systems

2x - 10y = -28

-10x + 10y = -20

Step 2: Solve for x

Elimination

Step 3: Solve for y

Answer:

B y<11

Step-by-step explanation:

Complete Question

Bacteria culture A culture of the bacterium Rhodobacter sphaeroids initially had 30 bacteria and t hours later increases at a rate of 2e^2t 1 bacteria per hour. Find the population size after four hours

Answer:

3010

Step-by-step explanation:

We were given the rate: 2e^2t

Step 1

We would integrate

P = Population

dP/dt = 2e^2t

dP =( 2e^2t) dt

∫dP = ∫ 2e^2t dt

P(t) = (2e^2t)/2 + C

P(t) = e^2t + C

Step 2

We solve for C

The culture initially has 30 bacteria

When t = 0

P(0) = 30

P(0) = e^2t + C

30 = e^2× 0 + C

30 = 1 + C

C = 30 - 1

C = 29

Step 3

Find the population size after four hours

t = 4, C = 29

P(t) = e^2t + C

P(4) = e^2 × 4 + 29

P(4) = e^8 + 29

P(4) = 3009.957987

Approximately = 3010 bacteria

Answer:

Thank you for your question. The options are missing: here are the missing options:

f(–3) = 8

f(3) = 5

f(8) = 0

f(–6) = 10

Answer

When a function f(x) is defined by ordered pairs (x,y), we can say that f(x) = y. Since it's a function, for every given x, there should only be one value for y.

(-6,10)

(0 , 4)

(1, -5)

(2, -1)

(8 ,-3)

it is not a line because the slopes are different

The correct answer is f(–6) = 10

Using the ordered pairs given, it is found that the true statement regarding the function is: f(–6) = 10​

A function y = f(x) is composed by a sequence of ordered pairs (x, f(x)).

In this problem, the pairs are as follows: {(8, –3), (0, 4), (1, –5), (2, –1), (–6, 10)}, hence:

Hence the correct statement is f(–6) = 10​.

More can be learned about ordered pairs at https://brainly.com/question/10585472

23-y=8 x=16

24-y=1.5 x=1.5

25-b=9 a=8

26-y=3.5 x= 3.5

that's what I know i don't think my answers are fully right

Answer:1 foot

If 3 units equal 3 feet, what is the value of 1 unit?

Answer:

D

Step-by-step explanation:

Answer:

A=πr²

3.14×5²

3.14×25

=78.5cm²

Answer:

n = -20

Step-by-step explanation:

(n + 7)2 = n - 6

2n + 14 = n - 6

14 = -n - 6

20 = -n

Checking my answer

(-20 + 7)2 = -20 - 6

(-13)2 = -26

-26 = -26

Answer:

i think the answer would be 8 2/5

Step-by-step explanation:

but i also need to know what the other uestions are saying

Answer:

You can do 60 ÷ 6 = 10 groups.

Step-by-step explanation:

There are many ways to answer this and it's very simple.

6 and 10 is just one of the many factors of 60.

you can also do 60 ÷ 2 = 30 groups

Answer:

[tex]A_s=179 \ yd[/tex]

Step-by-step explanation:

Area of Circle can be calculated using following formula

[tex]A=\pi r^{2}[/tex]

Where r is radius of circle

Area of outer circle (r=11 yd)

[tex]A_1=\pi (11)^{2}\\A_1=379.94 \ yd[/tex]

Area of inner circle (r=8 yd)

[tex]A_2=\pi (8)^{2}\\A_2=200.96 \ yd[/tex]

Area of shaded region

[tex]A_s=A_1-A_2[/tex]

[tex]A_s=379.94-200.96\\A_s=179 \ yd[/tex]

Answer:

d is 4 :))

hope that helped

Answer:

5

Step-by-step explanation:

2d+1=9

2d=8 (one crosses to the other side and becomes minus nine)

so d=4

Answer: 3 different orderings :)

Step-by-step explanation:

Answer:

504

Step-by-step explanation:

9*8*7 = 504

Answer:

8 × 6.98

Step-by-step explanation:

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

Answer: (C)

Step-by-step explanation:

Answer:

6 are trout

Step-by-step explanation:

1/4 of 8 is 2.

So, 3/4 of 8 will be 6.

This means 6 of them are trout

Answer:

1.8

2.24

3.15

Step-by-step explanation:

Answer:

x=6

Take 2 to the other side, the sign becomes negative. You're then left with 5x is less than 30. After that just divide both sides with 5 so that you're left with x.

The value of  x is less than 6

Inequality shows the relationship between two values in an algebraic equation that are not equal.

The given inequality is 5x + 2 < 32

Subtract -2 from both sides of the inequality then we get

5x < 30

Next, divide both sides by 5, then we get the range of x.

i.e x < 6

The solution to the given inequality  is x < 6 .

To learn more about inequality use the below link:

https://brainly.com/question/28823603

#SPJ5

Answer:

on edge I got it right so yea

Answer:

A sample of 307 is needed.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which

z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].

The margin of error is of:

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In this question, we have that:

We dont know the true proportion of women police officers, so we use [tex]\pi = 0.5[/tex], which is when the largest sample size would be needed.

92% confidence level

So [tex]\alpha = 0.08[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.08}{2} = 0.96[/tex], so [tex]Z = 1.75[/tex].

How large should a sample be if the margin of error is .05 for a 92% confidence interval

We need a sample of n, and n is found when [tex]M = 0.05[/tex]. So

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

[tex]0.05 = 1.75\sqrt{\frac{0.5*0.5}{n}}[/tex]

[tex]0.05\sqrt{n} = 1.75*0.5[/tex]

[tex]\sqrt{n} = 17.5[/tex]

[tex](\sqrt{n})^2 = (17.5)^2[/tex]

[tex]n = 306.25[/tex]

Rounding up

A sample of 307 is needed.

Answer: attached 47 degrees

Step-by-step explanation:

There is three inner triangles the total angle is 540 or 180*3 see comment

Answer:

$%

Step-by-step explanation:

cause x to the square root of 27 x 9382 is equal to the penguin race that gives us $%

Glad i could help!