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2 years ago

How do I find the X? (sorry the triangle is really small-)

Mathematics

1 answer:

Ber [7]2 years ago

3 0

Answer:

C. 98

Step-by-step explanation:

The sum of angles interior to a triangle is 180°, so you have ...

x + 38° + 44° = 180° . . . the sum of the angles (this is your equation)

x + 82° = 180° . . . . . . . . collect terms

x = 180° -82° . . . . . . . . . subtract 82° from both sides of the equation

x = 98° . . . . . . . . . . . . . . do the arithmetic

_____

Comment on the equation

The relations you learn about in math and geometry can all be translated to equations. When you learn "something" is "something else", anytime you have "something", you can always write the equation ...

something = (something else)

When you find out "the sum of angles" is "180 degrees", that means you can write the equation ...

(sum of angles) = 180°

Of course, you find a sum by adding things up. In this case, you're adding up the values of the angles: x, 38°, 44°. The next step is to use the rules of algebra to solve the equation for x.

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Which of the following points are on the line given by the equation y = 5x?

ivanzaharov [21]

Answer:

C and E

Step-by-step explanation:

To answer this question, we plug in the X values of the coordinates into the equation to see if they'll give us the corresponding Y value.

(X, Y)

Example:

Y = 5X

6 != 5 * 3

We do this for every coordinate point. If the problem doesn't make sense, it doesn't fall on the line. Let's test every one of these.

B. (0, 1)

1 != 5 * 0

C. (3, 15)

15 = 5 * 3

D. (4, 2)

2 != 5 * 4

E. (-1, -5)

-5 = 5 * -1

F. (-1, 5)

5 != 5 * -1

* For those who don't know, the != is how to say "not equal to" in computer science.

3 0

2 years ago

Fill in values for a, b and c so that the answer to this equation is x = 4. a(bx+3)=c

den301095 [7]

Answer:

A=1, B=3, C=15

Step-by-step explanation:

I think that

1(3x+3)=15

3x+3=15

3x=12

x=4

7 0

2 years ago

Write the equation in slope-intercept form of the line that has a slope of -2 and y-intercept of 2.

bixtya [17]

Answer:

y= -2x +2

Step-by-step explanation:

Slope-intercept form:

y= mx +c, where m is the slope and c is the y-intercept.

Given that the slope is -2, m= -2.

Substitute m= -2 into the equation:

y= -2x +c

Given that the y-intercept is 2, c= 2.

Substitute c=2 into the equation:

y= -2x +2

8 0

2 years ago

ANSWER THIS QUESTION FOR BRAINLEST AND 10 POINTS

ivolga24 [154]

Answer:

I beleive that the answer is (1,2)

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

A rectangular garden has a walk around it of width x. The garden is 20 ft by 15 ft. Write a function representing the combined w

kodGreya [7K]

Answer: A(x) = 15 ft + 2x

EXPLANATION

Given,

The dimension of the rectangular garden is 20 ft by 15 ft.

Dimension of a rectangle is written as Length by Width

This implies that,

Length of the garden = 20 ft

Width of the garden = 15 ft

The garden has a walk around it of width x.

The combined width of the garden = Width of garden + 2x

[we are adding twice the width of the walk because it is around the garden (this means it will add to the width of the garden on both the left and right sides)]

Combined width of the garden, A(x) = Width of garden + 2x

Since width of the garden = 15 ft

A(x) = 15 ft + 2x

5 0

2 years ago