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kipiarov [429]
3 years ago
10

Calvin paid $1.79 per pound of beans both times that he went shopping for supplies for a chili cook-off. He bought 4.05 pounds o

f beans the first time and 2.78 pounds the second time. Which expression shows the total cost in dollars of the beans he bought? CLEAR

Mathematics
2 answers:
Anna11 [10]3 years ago
8 0

Answer:

Step-by-step explanation:

The cost for one pound of beans is $1.79

Calvin bought 4.05 pounds of beans the first time and 2.78 pounds the second time. The total cost for the first time is the amount of beans that he bought for the first time × the cost per pound of beans.

First time cost = 4.05×1.79 = $7.2495

The total cost for the second time is the amount of beans that he bought for the second time × the cost per pound of beans.

Second time cost = 2.78×1.79 = $4.9762

Let y represent total cost in dollars of the beans he bought. Then

y = 7.2495 + 4.9762

y = $12.2257

zmey [24]3 years ago
6 0

Answer:

Step-by-step explanation:

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4. In one semester, Doug and Laura spent a combined 230 hours in the tutoring lab. If Doug
IRISSAK [1]

Answer:

80 hours

Step-by-step explanation:

let d represent doug, let l represent laura

first, set up a system of equations representing the problem:

since doug spent 10 less than twice the hours laura did, and we know that the total amount of hours they spent together is 230:

l=2d+10

d+l=230

then solve:

*first i rearranged the equations so i can solve this system of equations using elimination method*

l-2d=10

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*subtract*

3d=240

d=80

so, doug spent 80 hours in the lab

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3 years ago
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3 0
4 years ago
0.00952 in scientific notation
goldenfox [79]

Answer:

hopefully tht example will help u

Step-by-step explanation:

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3 years ago
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If polygon COLD is congruent to polygon WARM and the area of polygon WARM is 28 square feet, what is the area of polygon COLD
Law Incorporation [45]

Answer:

28 sqr feet.

Step-by-step explanation:

Congruent means equal to. So Cold = Warm for some given property (Area in this case).

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Bradley needs st least $280 for a laptop. He already had saved $40. He earns $8 an hour at his job. Write and solve the inequali
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Answer: 30

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