PLEASE HELP I GIVE THANKS

Answers

Answer 1

Answer: if im not mistaken your answer will be c

Answer 2

Answer:
The answer is c because the dot is closed and it going to the left

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Solve using substitution or elimination. Remember, you must check your work.10x -15y = 10
4x + 6y = 0

Answers

Answer:

The answer to your question is: (1/2, -1/3)

Step-by-step explanation:

Elimination

10x - 15y = 10 (I)

4x + 6y = 0 (II)

Multiply (I) by 2 and (II) by -5

20x - 30y = 20

-20x - 30y = 0

Add both equations

0 - 60y = 20

y = -20/60

y = - 1/3

Substitute y in (II)

4x + 6(-1/3) = 0

4x - 2 = 0

4x = 2

x = 2/4

x = 1/2

4(1/2) + 6(-1/3) = 0

4/2 - 6/3 = 0

2 - 2 = 0

0 = 0

Answer:

(1/2, -1/3)

Step-by-step explanation:

To solve using elimination, you have to make one of the variables from both equations additive inverses. Let's make the x-variables additive inverses.

First, we multiply the first equation by -2.

-2(10x - 15y) = -2(10)

-20x + 30y = -20

Now, we muliply the second equation by 5.

5(4x + 6y) = 0

20x + 30y = 0

If you look at the x-variables, now they are additive inverses. Now we add the two equations together.

-20x + 30y = -20

20x + 30y = 0

60y = -20

/60 /60

y = -1/3

Now you plug in the known y-value into any of the first equations. Let's use 4x + 6y = 0

4x + 6(-1/3) = 0

4x - 2 = 0

+2 +2

4x = 2

/4 /4

x = 1/2

The solution to this system of equations is (1/2, -1/3). You can change to decimal form if you want. To check your work, you plug in the x and y-values into the two equations in the question.

10x - 15y = 10

10(1/2) - 15(-1/3) = 10

5 + 5 = 10

10 = 10

So, the solution is true for this equation. Let's check the second one.

4x + 6y = 0

4(1/2) + 6(-1/3) = 0

2 - 2 = 0

0 = 0

Yes! When you plug the solution into the equations, they are true! So, your solution is (1/2, -1/3).

Will reward brainliest

Answers

The answer is C because 10/x = tan20° and then just rearrange it so that x = 10/tan20°

What is the equation of a line passing through the origin with a slope of positive one?

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We are going to use the equation of a line y = mx + b. In this equation, m is the slope and b is the y-intercept.

We know from the question that the slope is 1. Therefore, m = 1. So now, our line is y = 1x + b

Then, we can use a known point on the line to find b. We know that our line passes through the origin so point (0,0) is on the line.
0 = 1(0) + b
0 = 0 + b
b = 0

Therefore, the equation of the line is:
y = 1x + 0
or just y = x

y=x
The slope of this line is 1 (the numerical coefficient of x) and passes through the origin (if you put x=0 it gives you y=0).

7/10 write the fraction of the sum of fractions three different ways

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14/20 21/30 28/40 are the equivalent fractions

35. 63. 70
---- ---- -----
50. 90. 100

Write this number in standard notation. 1.986 x 106

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we have

$1.986*10^(6)$

we know that

$1.986*10^(6)=1.986*1,000,000$

$=1,986,000$

therefore

the answer is

$=1,986,000$

assuming this is supposed to say 1.986x10^6 , it is 1,986,000

PLZ HURRY IT'S URGENT!!!!!!A bag contains 14 golf balls and 16 tennis balls. What is the ratio, written in lowest terms, of golf balls to the total number of balls in the bag? A. 7 to 8 B. 8 to 15 C. 7 to 16 D. 7 to 15

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Answer:

Step-by-step explanation:

14/2 is 7 and 16/2 is 8 which is the lowest you can go