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NemiM [27]
3 years ago
13

if nickle brass consists of 70% copper, 24.5% zinc and 5.5% nickel and the mass of the copper is 25.7Kg what is the total mass o

f all three materials​
Mathematics
1 answer:
Dmitry [639]3 years ago
3 0

Answer:

36.71kg

Step-by-step explanation:

25.7 = .7x

x = 36.71kg

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Daughter’s current age is 6 years which is 1/5 th of her mother’s age. After how many years mother’s age will be three times gre
kifflom [539]

Answer:

6 years

Step-by-step explanation:

6 = ⅕m

m = 30

"mother's age will be three times greater than daughter's age"—Not sure what "three times greater than" means. I will interpret it as: "mother's age will be three times daughter's age."

In x years, mother will be 30+x and the daughter will be 6+x.

30+x = 3(6+x) = 18+3x

12 = 2x

x = 6

In 6 years, the mother will be 36 and the daughter will be 12.

5 0
3 years ago
if the total angle of a triangle is 180 A- 43 1/2 B-5x C-26.5 and the started value is 20 what is X?​
ValentinkaMS [17]

Answer:

x= 20.05 degree

180= 43.25+36.50+5x

180= 79.75+5x

5x=180-79.75

5x=100.25

x=20.25

ANGLE B= 100.25

3 0
3 years ago
Determine whether the given length can be side lengths of a right triangle. 12m, 60m, 61m
Ne4ueva [31]

Answer:

No

Step-by-step explanation:

Using the converse of Pythagoras' identity.

If the longest side squared is equal to the sum of the squares of the other 2 sides then the triangle is right.

The longest side = 61, thus

61² = 3721

12² + 60² = 144 + 3600 = 3744 ≠ 3721

Thus these sides do not form a right triangle.

3 0
3 years ago
How can I solve a multi step equation ex. 4x-9=7x+12
harkovskaia [24]
First you bring the x to one side so u subtract 4x from 7x and you get the new equation as -9=3x+12 then you just solve and you get x is equal to -7
4 0
3 years ago
Read 2 more answers
Find the length of AD in the figure
Mrac [35]
Find the area of the trapezoid and the shaded area then subtract and u have ur answers
7 0
3 years ago
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