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Bad White [126]
3 years ago
5

The ratio of zinc to copper in metal alloy A is 7 : 11 and in metal alloy B is 16 : 25.

Mathematics
1 answer:
Anastaziya [24]3 years ago
6 0

Answer:

A

Step-by-step explanation:

You first want to simplify the proportions:

7:11 becomes 1:11/7

16:25 becomes 1:25/16

Now you find the LCM of the denominators of the copper which is 112 and that gets us to:

176/112 and 175/112

you see the numerator of the first one is bigger so the number is bigger so the awnser is A

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Step-by-step explanation:

Given

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4 country music CD

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2 rap CD

3 Tejano CD

\text{Probability that Jerry randomly select a Tejano CD and then a rap CD from his case}=\text{Probability of selecting a Tejano CD}\times \text{Probability of selecting a rap CD}

P=\frac{3}{10}\times \frac{2}{9}

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3 years ago
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3 years ago
Given sets X, Y, Z, and U, find the set Xn(X - Y) using the listing method.
Aliun [14]

Answer:

{f, a}

Step-by-step explanation:

Given the sets:

X = {d, c, f, a}

Y = {d, e, c}

Z ={e, c, b, f, g}

U = {a, b, c, d, e, f, g}

To obtain the set X n (X - Y)

We first obtain :

(X - Y) :

The elements in X that are not in Y

(X - Y) = {f, a}

X n (X - Y) :

X = {d, c, f, a} intersection

(X - Y) = {f, a}

X n (X - Y) = elements in X and (X - Y)

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3 years ago
In the sketch below, two parallel lines are cut by a transversal.
Anettt [7]

Answer:

m<1 = 150°

Step-by-step explanation:

Given:

m<1 = (4x + 50)°

m<2 = (7x - 25)°

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m<1

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To find m<1, we need to create an equation that will enable us determine the value of x.

Thus,

4x + 50 = 7x - 25 => corresponding angles are congruent to each other

4x + 50 - 7x = 7x - 25 - 7x (subtraction property of equality)

-3x + 50 = - 25

-3x + 50 - 50 = -25 - 50 (substraction property of equality)

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x = 25

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Plug in the value of x

m<1 = 4*25 + 50 = 100 + 50

m<1 = 150°

7 0
3 years ago
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