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zmey [24]
3 years ago
7

An alloy is composed of nickel, zinc, and copper in a ratio of 7:2:9. How many kilograms of each metal are needed to make 3.6 kg

of this alloy?
Mathematics
1 answer:
ivolga24 [154]3 years ago
8 0

Answer:

Nickel= 1.8 kg

Zinc= 0.4 kg

Copper= 1.8 kg

Step-by-step explanation:

7:2:9

7=nickel

2=zinc

9=copper

7+2+9=18

18×2=36

7×2=14 2×2=4 9×2=18

Divide by 10

14÷10=1.4 4÷10=0.4 18÷10=1.8

1.8+1.4+0.4= 3.6

1.8=nickel

0.4=zinc

1.8=copper

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tensa zangetsu [6.8K]

5x^4

Step-by-step explanation:

simply we take 5x^4 bec. it can be divided by 40 and 135

7 0
3 years ago
Estimation is best defined as: a. both a process of inferring the values of unknown samples statistics from those of known popul
Ghella [55]

Answer:

Option D is the correct answer - Estimation is best defined as   a process of inferring the values of unknown samples statistics from those of known population parameters

Step-by-step explanation:

Estimation involves the usage of the value of a statistic derived from a sample to estimate the value of a corresponding population parameter.

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Thus, option D is correct.

8 0
3 years ago
Write<br> (b^4)^2 without exponents
Anna35 [415]

Answer:

b^8

Step-by-step explanation:

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4 0
2 years ago
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5 0
3 years ago
Solve the proportion X-16/x+6 = 3/5
BartSMP [9]

Answer:

x = 49

Step-by-step explanation:

Given

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x = 49

6 0
3 years ago
Read 2 more answers
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