Mathematics College

Four pounds of apples cost $5. Eight pounds of apples cost $10. If the total cost of apples, y, varies directly with the number of pounds of apples purchased, x, what is the cost of 6 pounds of apples? Round your answer to the nearest hundredth.

$0.80
$1.25
$4.80
$7.50

Answers

Answer 1

Cost of apples, y, varies directly with pounds

of apples purchased, x.

y = kx

k is constant of proportion

Four pounds of apples cost $5

5 = 4k

k = 5/4 = 1.25

10 = 8k

k = 10/8 = 1.25

As it should be, k is a constant equal to 1.25

y = 6(1.25) = $7.50 for 6 pounds of apples

Answer 2

Answer:

the answer is D

Step-by-step explanation:

i took the test on edg your welcome

Related Questions

PLS HELP!!!!! Find the solution to (X+2)2=49

Answers

Answer:

22.5

Step-by-step explanation:

you have to do opposite bedmass to isolate the variable. the opposite of multiplying is division.

(X+2)2 =49

   2        2

Then do addition as subtraction.

X+2= 24.5

  -2    -2

X= 22.5

PRACTICE ANOTHER The administration of a large university wants to take a random sample to measure student opinion of a new food service on campus. It plans to use a scale from 1 to 100, on which 1 is complete dissatisfaction and 100 is complete satisfaction. The administration knows from past experience with such questions that the standard deviation for the responses is going to be about 3, but it does not know what to expect for the mean. It wants to be almost sure that the sample mean is within plus or minus 1 point of the true population mean value. How large, n will the random sample have to be

Answers

Answer:

81 samples

Step-by-step explanation:

According to the empirical rule :

Possible values of the sample mean is within 3 standard deviations of the population mean :

μ ± 3 sd(x) ; sd(x) = standard deviation of sampling distribution.

3 * sd(x) = 1

sd(x) = 1/3

Recall:

Standard deviation of sampling distribution, sd(x)

sd(x) = σ / sqrt(n)

1/3 = 3 / sqrt(n)

Square both sides

1/9 = 9/n

Cross multiply :

n * 1 = 9 * 9

n = 81

42/2 +9=???

what is the answer and how do you find the answer?!

Answers

42/2 is 21 then add 9 you’d get 30 as your final solution.

Two sides of an obtuse triangle measure 12 inches and 14 inches. The longest side measures 14 inches
What is the greatest possible whole-number length of the unknown side?

Answers

Answer:

Step-by-step explanation:

If you add the lengths of two sides, 12 and 14, you will get 28. Using the above theorem, the third side cannot be greater than or equal to 28. Therefore, the greatest possible whole-number length of the unknown side is 27.

Answer:

Step-by-step explanation:

7 or C

16. On a yachting trip in the South Pacific, you discover a previously unknown island. You notice that there is a population of especially fluffy and particularly cute long-eared rabbits living there. These rabbits seem to have no predators at all on the island, and their mating habits seem to be perfectly random. When they are first surveyed, they have an average ear length of about 18 cm. When they are sampled again in five years, what will likely be true of their ear length

Answers

Answer: Their ear length will be thesame because there's no force of evolution.

Step-by-step explanation:

Based on the information given in the question as we are informed that the rabbits have no predators and that their mating habits seem to be perfectly random.

We should note that when they are sampled again in five years, due to the fact that there's no source of evolution, their ear length will be thesame. Also, their offspring number will be thesame as well.

ill mark brainlist plss help

Answers

Answer:

C. 99 yd^2

Step-by-step explanation:

The formula for solving for area of a triangle is 1/2*b*h.

18*11=198

198/2=99

The list below shows all of the possible outcomes for flipping four coins.

Answers

Answer:

Each one has two possibilites, so the total is 2*2*2*2 = 16

Step-by-step explanation:

TTTT

TTTH

TTHT

TTHH

THTT

THTH

THHT

THHH

HTTT

HTTH

HTHT

HTHH

HHTT

HHTH

HHHT

HHHH

If you eliminate the duplicates, ie, the coins are identical, you get 4

TTTT

TTTH

TTHH

THHH

HHHH

factor if possible x/2+9x+18

Answers

Answer:

3) (x+6)(x+3)=0

4) (x+2)(x-6)=0

Step-by-step explanation:

A bus can hold a total of 60 students. The bus is 73% full how many students are on the bus?​

Answers

Answer:

44

Step-by-step explanation:

so youre looking for 73% of students rite? of means multiplication , you just times 73% by 60

73%*60=43.8

but there cant be point 8 of a person unless theyre missin a couple limbs, so you round up to 44!

hope it helps :)

44
---------------------

Can a triangle have three acute angles? Justify your answer

Answers

Yes because each side can be measured at atleast 90 degrees.

Nate ordered a pizza to be delivered. The bill with 5% tax and 20% tip was $24.00. What was the original cost of the pizza?

a
12.60
b
16.65
c
15.40
d
19.20

Answers

Answer:

d.  $19.20

Step-by-step explanation:

Let C = original cost of pizza

24 = .05C + .20C + C

     = 1.25C

C = 19.20

What is the percent decrease from 61 to 11?

Answers

I think it’s a 49 percent decrease
The change would be 82 percent . 11 is a 81.967% decrease of 61 .

Find the area of the shaded region using Pick's Theorem.



A. 25
B. 42
C. 18
D. 27

Answers

Answer:The answer is B

Step-by-step explanation:

write 194.218 in expanded form


Answers

One hundred ninety four and two hundredth eighteenths

Mrs. Hall bought a package of 8 pencils for $4.64. What is the unit price per pencil?

Answers

Answer:

$0.58

Step-by-step explanation:

There are 8 pencils per package. To find the value of each pencil, divide the cost by 8

4.64/8 = $0.58

Answer:

$0.58

Step-by-step explanation:

unit means one, or the rate or price of each pencil. so if the total was 4.64, youd divide 4.64 by 8, which comes out to $0.58 per pencil

1/4 Marks
5/17 Marks
Given that f(x) = x2
x2 – 3
9
a) Find f(3)
b) Find f(x)
c) Find f'(11)

Answers

Answer:

a)13

b)F(x)=1/f(x) = 2/ x^2-3

c) 1/59

there are only two lines of symmetry in a circle true or false​

Answers

Answer:False

Step-by-step explanation: a circle has infinite lines of symmetry an oval has two

URGENT GEOMETRY!!! can someone help me with this please

Answers

Answer:

To find the angle of this triangle you have to [tex]cos^{-1}(\frac{4.87}{5.35})[/tex]. When you do this you will get 24 as the angle

Step-by-step explanation:

Hope this Helped

what is the solution of

sqrt 2x + 4 equals 16?​

Answers

Answer: x=6

Step-by-step explanation:

2x+4=16

   -4   -4

(2x=12)/2

x=6

I will mark you brainliest

Answers

Answer:

a i think

GIVE ME BRAINLIESTpls not trynna be demanding

Step-by-step explanation:

but pls can i have brainliest

The area of a rectangular field of length 12 m is 108 sq.m
Find the width of the field.

Answers

Answer:

width of rectangle is 9m

Find the value of a and the area of the triangle. Round to the nearest hundredth

Answers

Answer:

a = 6.65

Area = 15.84

Step-by-step explanation:

By cosine rule in the given triangle,

BC² = AC² + AB² - 2(AC)(AB)cos(C)

a² = 5² + 9²- 2(5)(7)cos(28°)

a² = 25 + 81 - 61.81

a = [tex]\sqrt{44.19}[/tex]

a = 6.65

Area of a triangle with given three sides = [tex]\sqrt{s(s-a)(s-b)(s-c)}[/tex]

Here, s = Average of lengths of all sides

a, b and c are the measures of the respective sides of the triangle.

s = [tex]\frac{6.65+7+5}{2}[/tex]

s = 9.325

a = 6.65, b = 5 and c = 7

Now substitute these values in the formula to get the area,

Area = [tex]\sqrt{9.325(9.325-6.65)(9.325-5)(9.325-7)}[/tex]

        = [tex]\sqrt{9.325\times 2.675\times 4.325\times 2.325}[/tex]

        = [tex]\sqrt{250.8313}[/tex]

        = 15.838

        = 15.84

solve this system of equations by graphing . first graph the equations then type the solution .

y=1/5x-5
y=-3/5x-1

PLEASE HELP ILL GIVE 40 POINTA PLEASE DONT SKIP:(((

Answers

9514 1404 393

Answer:

  (x, y) = (5, -4)

Step-by-step explanation:

The Desmos graphing calculator is a handy tool for solving questions like this one. It tells you the solution is ...

  (x, y) = (5, -4)

PLS GIMME ANSWER OR IM FAILING THIS

Answers

Answer:

2/7

Step-by-step explanation:

-1 1/7 + 6/7 = -8/7 + 6/7 = 2/7

the answer is 2/7 um there’s a word count thing on this so don’t mind the part

Round 456.5347 to 1. d.p

Answers

456.5
because the 2 d.p is lower than 5 you round down
The answer is 456.5
....................

0.8 -0.50 3 with solution​

Answers

Answer:

0.3

Step-by-step explanation:

Answer:

0.8-0.503=0.297

0.8-0.50= 0.3

Step-by-step explanation:

Solve for x.
5x + 14 greater than or equal to 54

Answers

Answer:

x = 8

Step-by-step explanation:

Answer:

equal, tell me if I'm wrong

Factor the algebraic expression.
12a +9

Answers

Answer:

110

Step-by-step explanation:

because you have to add the number

please help me on this it is 55 points

Answers

The answer is 1/9

Hope this helps

Answer:

59/1

Step-by-step explanation:

25 POINTS!!
The radius of a circle is 10 feet. What is the angle measure of an arc bounding a sector with area 15​ square feet? plz help no one answered the last one

Answers

Answer:

no only 13 points

Step-by-step explanation:

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