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Vedmedyk [2.9K]
3 years ago
13

Tony bought 12 identical

Mathematics
1 answer:
zhannawk [14.2K]3 years ago
7 0
Lets say a fork costs x $. Therefore a spoon costs 2x $.

2x + x = 6. => 3x = 6. => x=2

so:
a) A spoon costs: 2x = 2 × 2 = $4
b) (12 × 4) + (10 × 2) = $68
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You deposit $100 in a savings account. The account earns 11% simple interest per year.
qaws [65]

Answer:

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4 0
3 years ago
Suppose the weekly amount of money spent on maintenance and repairs by a company is NOT approximately normally distributed. Howe
UNO [17]

Answer:

Probability = 0.00621

Step-by-step explanation:

We are given;

Population mean; μ = 400

Population standard deviation; σ = 20

Raw score; x¯ = 450

the probability that the actual costs will exceed the budgeted amount will be the p-value.

Thus, let's first find the z-score after which we will find the p-value.

z = (x¯ - μ)/σ

z = (450 - 400)/20

z = 50/20

z = 2.5

From online p-value from z-score calculator attached, using z = 2.5; one tailed hypothesis; significance level of 0.05, we have;

P-value = 0.00621

8 0
3 years ago
Zuri made 2 spheres using plaster. The smaller sphere has a radius of 6 cm. The larger sphere has a radius of 24 cm.
Sliva [168]
Since we are dealing with volume, when one object is 4 times bigger than another, the difference in volume is 4^3 = 64.

6 cm sphere = 4/3 *PI * 6^3
6 cm sphere = 4/3 *PI * 216
6 cm sphere = <span> <span> <span> 904.78 cc

24 cm sphere = </span></span></span>4/3 *PI * 24^3
24 cm sphere = 4/3 *PI * 13,824
24 cm sphere = <span> <span> <span> 57,905.84 </span> </span> </span> cc

Comparing the volumes: <span>57,905.84 / 904.78 = </span><span><span><span>64 </span>


</span> </span> <span>
</span>
7 0
3 years ago
Mrs. Kim spent $4.77 on her favorite imported cheese. She bought 9/10 of a pound. Find how much cheese cost per pound.
Kruka [31]
4.77x10= 47.7/9 = 5.30. 1 pound cost $5.30
6 0
3 years ago
If a+3b=13 and a+b=5 the value of b is
hoa [83]

Answer:b=4

Step-by-step explanation:

7 0
3 years ago
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