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Alexxandr [17]
3 years ago
5

Can someone teach me how to do it plz.

Mathematics
1 answer:
Contact [7]3 years ago
3 0
You have the equation \frac{c-2}{13} = 1. To solve for the variable c, you need to get c on one side by itself to equal something. So the final answer should be
c = (some number).

The first step is to multiply both sides by 13. This will cancel the 13 in the denominator of the left side because 13/13 = 1.
13*\frac{c-2}{13} = 1*13 \\ 
c - 2 = 13

Almost there... now we have to move the -2 to the other side. We can do this by adding 2 to both sides of the equation.
c - 2 +2 = 13 + 2 \\ 
c = 15
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Solve for z.<br> 42 = -7 (z - 3)<br> z = ?
mezya [45]
You divide by -7 on both sides then add three to both sides and the answer is -3
6 0
4 years ago
Read 2 more answers
MATH FRACTIONS!!<br> What is 3/4 divided by 5/6 how to solve it the step by step. I NEED IT
Reil [10]

Answer:

9/10

Step-by-step explanation:

the rule says

\frac{a}{b} /\frac{c}{d} =\frac{ad}{bc}

so in our case

a=3

b=4

c=5

d=6

so the division is

\frac{3*6}{4*5} \\\\=\frac{18}{20}

we can simplify

\frac{18}{20} \\\\=\frac{2(9)}{2(10)} \\\\=\frac{9}{10}

that's our answer

I don't know if you need step by step of the rule, if you need let me know

6 0
3 years ago
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Divide -54 by -6 please
mel-nik [20]
The answer to your question is 9
8 0
3 years ago
the total cost of 2 kg of Apples in 6 of oranges is rupees 570 if the cost of 3 kg of apples is the same as the cost of 5 kg of
HACTEHA [7]

Answer:

Cost of 1 kg apple = a = RS 102 (Approx.)

Cost of 1 kg orange = b = RS 61 (Approx.)

Step-by-step explanation:

Assume;

Cost of 1 kg apple = a

Cost of 1 kg orange = b

So,

2a + 6b = 570 ....... Eq1

and

3a = 5b..........Eq2

From eq 2

3a = 5b

a = 5b / 3

So,

2a + 6b = 570

2(5b/3) + 6b = 570

b = 61.07

Cost of 1 kg orange = b = RS 61 (Approx.)

a = 5b / 3

a = 5(61) / 3

Cost of 1 kg apple = a = RS 102 (Approx.)

7 0
3 years ago
A tree 4.7 m tall casts a shadow 8.2 m long. Calculate the angle of elevation of the sun.
EleoNora [17]

Answer:

9.45

Step-by-step explanation:

A^2 + B^2 = C^2

4.7^2 + 8.2^2 = C^2

22.09 + 67.24 = C^2

89.33 = C^2

Square Root It

C = 9.45

3 0
3 years ago
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