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elena-s [515]
3 years ago
15

What is the solution to the equation 38x=10x+42

Mathematics
1 answer:
Alex3 years ago
8 0

hey mate here is you answer..! ;)

Answer:

x = 3/2

Step-by-step explanation:

38x = 10x + 42

=>38x - 10x = 42

=>28x = 42

=>x = 3/2


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21. In the figure given below, AC is parallel to DE. Find the valuesof xy and z and hence find the 2DBE.
algol13

Answer:

X= 50°

Y= 70°

Z= 30°

BDE= 30°

2BDE= 60°

Step-by-step explanation:

(2x -70 )+z+(2x+20)=180...(sum of angle on a straight line)

2x -70 = BDE... alternate angles

Y + (2x-70)+(50+x-20) = 180...(sum of angles in a triangle)

X-20 = z ... alternate and opposite angles

(2x -70 )+z+(2x-+20)=180

2x-70 + x-20 +2x +20= 180

5x -70= 180

5x = 250

X= 50°

X-20 = z

50-20= z

30° = z

2x -70 = BDE

2(50) -70 = BDE

100-70 = BDE

30°= BDE

Y + (2x-70)+(50+x-20)

Y + 100-70 +50 +50 -20 = 180

Y + 200-90=180

Y= 70°

2BDE = 2*30

2BDE= 60°

8 0
3 years ago
Let the function f(x) have the form fx) = Acos(x+C). To produce a graph that matches the one shown below, what must the value of
slava [35]

Answer:

B. 4

Step-by-step explanation:

The given function is of the form:

f(x) = A \cos(x+C).

A is called the amplitude of the given function.

We can read from the graph that, the function ranges between:

-4 and 4

This implies that:

|A| = 4

Therefore the amplitude of the function is 4.

Hence the value of A must be 4.

8 0
4 years ago
Evaluate this expression <br> (-7--9)*(8+2)
Marizza181 [45]
Before we get started, it is good to remember PEMDAS - the acronym that tells you the order to carry out equations.

P = parentheses
E = exponents
M = multiplication
D = division
A = addition
S = subtraction

Knowing this, we should start by doing the equations <em>within </em>each parentheses.
 
(-7 - -9) *(8 + 2)
 (2) *(10)

So we did the addition and subtraction pieces within each group leaving us with the above equation. Now let's multiply:

(2)*(10) = 20

20 is the answer.
5 0
3 years ago
Without multiplying determine whether the product of 5 x 4/5 is located on the number line at point A,B or C
WARRIOR [948]
I the answer is 20/5 but you have to put it in abc
4 0
3 years ago
Can anyone help me solve this problem: 3i(-5i)
katovenus [111]
The answer is -15i^2

4 0
4 years ago
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