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liberstina [14]
3 years ago
5

Jamal buys postcards of Washington, D.C., for $14.62, not including tax. Each postcard costs $0.86. How many postcards does Jama

l buy?
20 points please help me!
Mathematics
1 answer:
Nostrana [21]3 years ago
5 0
He buys 17 postcards, you divide, the total price by each postcard
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A store is selling a TV for $389. This is %64 less than the regular price. What is the regular price?
nignag [31]
64%      =       $389
___                ____

100%                X$               = Cross multiplication. (64x = 38900 = $607.81)

I rounded it.

Hope I become the brainliest answer.

4 0
3 years ago
Pat has $25 to spend at the amusement park. It costs $7 to get into the park, and $2.50 for each ride.
Andreas93 [3]

Answer:

7

Step-by-step explanation:

First, subtract 7 from 25. Then divide the answer by 2.5. You get 7 as your answer :)

4 0
3 years ago
Read 2 more answers
In the Ma-and-Pa grocery store, shelf-space is limited and must be used effectively to increase profit. Two-cereal items, Grano
insens350 [35]

Answer:

No. 2/3 of the space to Grano and 1/3 of the space to Wheatie.

Step-by-step explanation:

Allocating about 57% to Wheatie and 43% to Grano, means to allocate 60(.57)=34.2 ft2 of Wheatie and 60(.43)=25.8 ft2 of Grano. In that case there would be 34.2/.4=85.5≈85 boxes of Wheatie and 25.8/.2=129 boxes of Grano. The total profit would be 129(1)+85(1.35)=$243.75

Best option:

200 Granos boxes and 50 Wheaties boxes on the shelf.

200(.2)=40ft^2 will allocate Granos boxes

50(.4)=20ft^2 will allocate Wheaties boxes.

This means that 40/60=2/3=66.6% of the space will allocate Granos boxes and 20/60=1/3=33.3% of the space will allocate Wheaties boxes.

The total profit would be 200(1)+50(1.35)=$267.5

EXTRA:

This is a optimization problem.

Let X1 be the number of Granos boxes

Let X2 be the number of Wheaties boxes

Objective:

Max Z=1(X1)+1.35(X2)

Subjecto to

0.2(X1)+0.4(X2)<=60,

X1<=200,

X2<=120,

X1,X2>=0.

You can solve it using the simplex method. Check the image for more details.

5 0
3 years ago
Can you help me with this, please? ​
Aloiza [94]

Answer:

y =x-12

Step-by-step explanation:

(x_1, y_1) = (16, 4) \ \ \ and \ \ \ (x_2, y_2) = (17, 5)

Equation of straight line is

y-y_1 =\frac{y_2-y_1}{x_2-x_1}  (x-x_1)

y-4 =\frac{5-4}{17-16}  (x-16)

y =(x-16)+4

y =x-12

3 0
3 years ago
Samantha and Corey are on a road trip. The first day, they drive 318 miles in 6 hours. What is their speed in miles per hour?
Setler [38]

Answer: 58 miles per hour

Step-by-step explanation:

If you divide 318 by 6 then you get how many miles were driven in that hour. so there speed was 58 miles per hour

8 0
3 years ago
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