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Akimi4 [234]
3 years ago
12

20+4m=42 and what's the solution to this?

Mathematics
1 answer:
KiRa [710]3 years ago
8 0
20+4m=42. The answer to m is 5.5. I got my answer by doing the inverse operation of adding 20 by subtracting 20 from both sides and I got 4m=22. I later did the inverse operation of multiplying 4 I divided by 4 from 22 getting me 5.5.

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A certain relationship is defined as having only one corresponding y-value for each x-value. Which of the following best describ
igomit [66]

Answer:

We conclude that a function is defined as having only one corresponding y-value for each x-value.

Hence, option (C) is true.

Step-by-step explanation:

We know that A function is a certain relationship is defined as having only one corresponding y-value for each x-value.

Considering the function

  • f(x) = x+1

Here,

  • x is the input and f(x) or y is the output.
  • 'x' is often called an independent value and y is called the 'dependent' value.

Considering the table

x                      y

1                      2

2                     3

3                     4

4                     5

The values in the table satisfy the function y = x+1.

It is clear from the table that the function has only one corresponding y-value for each x-value. In other words, there is no repetition of 'x' value.

Therefore, we conclude that a function is defined as having only one corresponding y-value for each x-value.

Hence, option (C) is true.

6 0
3 years ago
A kite is flying 79 ft off the ground, and its string is pulled taut. The angle of elevation of the kite is 50°. Find the length
Art [367]

Answer:

If the kite has an 11 ft line attached to it and it casts an 8 feet shadow, we will have a rectangle triangle (see picture below).

To find the height x of the kite, we can apply the Pythagorean theorem.

x² = 11² - 8²

x² = 121 - 64

x² = 57

x =√57

Step-by-step explanation:

4 0
2 years ago
Which system of equations has the solution (4,−2)?
Marat540 [252]

Answer:

A)

Step-by-step explanation:

To find the answer we must solve each of the systems separately. Starting with the first one:

x + y = 2

2x - y = 10

We must find what x or y is equal to and then replace it in the second equation. I'll go with y as it seems easier:

x + y = 2

y = 2 - x

Now that we found y we replace it in the second equation this way. Be careful with the signs, the minus with change our signs:

2x - (2 - x) = 10

2x - 2 + x = 10

3x = 12

x = 12/3

x = 4

Now that we have x, we replace the variable with its value in one of the equations. Again, for simplicity I'll go with the one that seems easier.

4 + y = 2

y = 2 - 4

y = - 2

7 0
2 years ago
PLEASE HELP WILL BRAINLIST (20 POINTS)
Delvig [45]

Answer:

x=2/3+1/3\sqrt{10}

Step-by-step explanation:

Let's solve your equation step-by-step.

3x2−4x−2=0

For this equation: a=3, b=-4, c=-2

3x2+−4x+−2=0

Step 1: Use quadratic formula with a=3, b=-4, c=-2.

3 0
3 years ago
What is 309,099,990 in expanded form
Vlad [161]
Three hundred million, ninety nine thousand, nine hundred ninety :)
6 0
3 years ago
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