All categories

3 years ago

Watch help video

Mathematics

1 answer:

Evgen [1.6K]3 years ago

6 0

Answer:

20 dimes and 2 quarters

Step-by-step explanation:

x = number of dimes

y = number of quarters

minimum is greater than or equal to ≥

x+y ≥16

no more than is less than or equal to ≤ ,

value of dime is $ 0.10

value of quarter is $0.25 so

0.10x + 0.25y ≤ 3.00

Rewrite inequalities in terms of y:

y ≥16 - x

(0.25/0.25)y ≤ (3.00/0.25)-(0.10/0.25)x→

y≤12 - 0.4x

Graph system: see file

You might be interested in

Suppose you have 52 feet of fencing to enclose a rectangular dog pen. The function A = 26x = x2 where x = width, gives you the a

saul85 [17]

maximum area is a square

the side of the square would be 52/4 = 13 feet

area = 13*13 = 169 square feet

6 0

4 years ago

Read 2 more answers

Carrie borrowed $800 dollars from her aunt at 8% interest per year. If she paid her a total of $448 in simple interest, how many

Jet001 [13]

Answer:

13 years

Step-by-step explanation:

First we will have to see how much she owns her aunt:

800-448= 362

8% of 348 = 27.84

362 ÷ 27.84 = 13 years

I might be wrong but hopefully this helps :)

8 0

3 years ago

When rounded to the nearest hundred thousand thousand will result in 2,400,000

xenn [34]

This question confused me. I don't know what u are asking

5 0

3 years ago

A rectangle has an area of 228 ft and a length that measures 12ft find the perimeter

Blizzard [7]

The area of a rectangle is the width times the length:

$A = w\cdot l \iff 228 = w\cdot 12 \iff w = \dfrac{228}{12} = 19$

The perimeter is twice the sum of the dimensions:

$2p = 2(12+19) = 2\cdot 31 = 62$

8 0

3 years ago

She needs to buy at least 100 chairs. Chairs with arms cost $80. Chairs without arms cost $70. Ms. Robinson can spend, at most,

stealth61 [152]

Answer:

50 chairs with arms and 50 without arms will cost $7500

Step-by-step explanation:

Create two equations using the given information. The unknowns are :

W = Number of chairs with arms

N = Number of chairs with No arms

First equation (associated with the total number of chairs to buy):

W + N = 100

Second equation (associated with the amount to spend):

80 W + 70 N = 7500

Solving: solve for W in the first equation: W = 100 - N

Use it to substitute for W in the second equation:

80 (100 - N) + 70 N = 7500

8000 - 80 N + 70 N = 7500

subtract 8000 from both sides and combine

- 10 N = - 500

Divide both sides by -10 in order to solve for N

N = -500 / (-10) = 50

Now use this value in the substitution equation to solve for W:

W = 100 - 50 = 50

So the person can buy 50 chairs with arms and 50 chairs without arms paying for them $7,500.

8 0

3 years ago