how do you use graphs toslove a system of two linear equation

Answer:

D

Step-by-step explanation:

The slope for the first one is 1 since x stands alone. You have to find the slope for each, and find the one that matches, so divide the change in y over change in x, or for the graphs find where the points are, find the difference in the y and x values and do change in y over change in x. For A, the slope would be -1, so it wouldn’t work. For B, the slope would be -5/4, so it wouldn’t match. For C, the slope would be -4/2, so it wouldn’t be a match. D the slope would be 1 so it is the only one that matches.

Answer:

Texture i think

Step-by-step explanation:

Answer:

luster

Step-by-step explanation:

aaaaaaaaaaaaaaaaaaaaaaaaa

Answer: 9 1/9

Step-by-step explanation:

If it's about currency amount, then it should be about $2,095..

Answer:

Its an answer :O

Step-by-step explanation:

GET SMARTER

Answer:

the area represents 40.5 square miles

Step-by-step explanation:

Since 1 inch represents 3 miles, then 1 inch x 1 inch = 1 square inch represents 3 mi x 3 mi = 9 square miles

Therefore, 4.5 square inches would represent 4.5 x 9 square miles = 40.5 square miles

Answer and explanation below:

Answer:

$28

Step-by-step explanation:

So we know the shirt is $20, and the owner is raising the price by 40%. That means we are adding $20 to 40% of the cost of the shirt

$20 + 40%

So we have to figure out how much 40% of $20 is. To do that, you can use fraction or decimal type

40% is the same thing as 40/100 or 0.4.  So you will multiply either of them by $20 to find how much 40% of $20 is.

40/100 * 20 = 8

0.4 * 20 = 8

Now we know that 40% of $20 is $8. So now we will add 8$ to $20

20 + 8 = 28

The new price will be $28

Answer: 1/2= 5/10

5/10 - 3/10 = 2/10 or 1/5

so planet X is 1/5 of a light-year closer

Step-by-step explanation:

Answer:

option a

Step-by-step explanation:

as 145 +10 = 155°

and total angle measure of triangle is 180

so

180-155 = 25°

in option a one angle is 10

other is 25 so obviously last angle will be 145

and same is in the triangle abc

one angle is 10 other is 145 and last is 25

both hve same measures thus are same triangles.

Step-by-step explanation:

In order to figure out what is f(-2), we substitute all the "x" in the function with "-2" like this:

f(-2) = x² - 6x - 14 = (-2)² - 6(-2) -14

Now we can follow PEMDAS:

(-2)² - 6(-2) -14

= 4 + 12 - 14

= 2.

Hence, f(-2) = 2.

Answer:

7×3-(2×3+8)÷2=14

Step-by-step explanation:

7×3-(6+8)÷2=14

7×3-14÷2=14

21-7=14

-Hope this helps!

PLS MARK ME BRAINLIEST

Answer:

To show that a reflected object is congruent to its preimage, follow these steps:

Identify the line of reflection.

Locate corresponding points on the preimage and its reflection.

Measure the distances between the line of reflection and the corresponding points.

Compare the distances for each corresponding point.

If the distances are equal, the reflected object is congruent to the preimage.

Step-by-step explanation:

Step-by-step explanation:

To show that a reflected object is congruent to its preimage, you need to demonstrate that the reflected object and the preimage have the same size and shape. Here's how you can do it:

1. Identify the preimage

2. Determine the line of reflection

3. Reflect the preimage

4. Compare corresponding points

5. Check angles

6. Verify sides

7. State the conclusion

By following these steps and ensuring that all corresponding points, angles, and sides are congruent, you provide a specific and comprehensive demonstration that the reflected object is congruent to its preimage.

Answer:

False

Step-by-step explanation:

The points all correspond with each equation inputted into the graph

Answer:31

Step-by-step explanation:

Answer:

Look below

Step-by-step explanation:

A. This is a 5-sided figure (pentagon) therefore the interior angles would add up to 540 degrees. We can use this to set up an equation:

x+100+112+113+117=540

Add like terms

x+442=540

Subtract 442 from both sides

x=98

B. This is a 6-sided figure (hexagon) therefore the interior angles would add up to 720 degrees. We can use this to set up an equation:

x+90+90+130+140+150=720

Add like terms

x+600=720

Subtract 600 from both sides

x=120

Answer:

144 cm squared

Step-by-step explanation:

Answer:

it is 153.9 inches squared

Step-by-step explanation:

Answer:

525

Step-by-step explanation:

If it's just asking to find the average of heads then times it by 20 then just do 32+28+21+24 to get 105 and divide it by 4 to get 26.25 then times it by 20 since this is the average of 50 throws and it's asking for the average of 1,000 throws which is 525

Answer:

  (d)

Step-by-step explanation:

You want to identify the stem and leaf plot for the 16 scores listed. Their minimum is 0.

A typical stem and leaf plot lists the number of tens in a value at the left margin (the stem), then units digits (in order, least to greatest) of the values with that number of tens.

For example, the scores 0 and 5 both have 0 tens, so would be plotted as ...

  0 | 0 5

where the leftmost 0 is the "stem" and the right two digits, 0 and 5, are the "leaves".

The plot will have as many leaves as there are values in the data set.

The two scores less than 10 are 0 and 5, so the first line of the stem-and-leaf plot will be ...

  0 | 0 5 . . . . . . . . . eliminates choices B and C

There are 16 scores in the data set, so the plot will have a total of 16 leaves. (eliminates choice A).

The correct stem-and-leaf plot is choice D:

0 | 0 5

1 | 1 5 5 5

2 | 0 0 0 0 3 6

3 | 1 4 9 9

Key 1|1 = 11

The correct proportion to use to find the amount of orange juice, j, needed to add to 18 L of pineapple juice is:

2/8 = j/18

This proportion relates the ratio of orange juice to pineapple juice in the recipe (2:8) to the amount of orange juice needed to add to 18 L of pineapple juice. By cross-multiplying, we can solve for j as follows:

2/8 = j/18

218 = 8j

36 = 8*j

j = 36/8

j = 4.5

Therefore, you would need to add 4.5 L of orange juice to 18 L of pineapple juice to create the fruit juice recipe that calls for a ratio of 2 parts orange juice to 8 parts pineapple juice.

Answer:

Step-by-step explanation
2 over 8 equals j over 18

This proportion represents the ratio of orange juice to pineapple juice in the recipe. By setting up the proportion, we can solve for the value of 'j,' which represents the amount of orange juice needed.

So, the correct proportion is:

Answer:

Step-by-step explanation:

QUESTION 7:

We are trying to find angles 1 and 2.

Known angle: 107˚.

In this question, we have 2 parallel lines with a transversal. A transversal is a line that passes through 2 parallel lines making it so that the angles on both sides are exactly the same.

Step 1: Find the measures of all the angles using the one we already know.

I will start with the angle adjacent (right next to) the angle that measures 107˚. As you can see, it is a supplementary angle because both of them form a straight line, or 180˚.

Therefore,

107+x= 180

x= 180-107

x= 73˚

Next, I will find the measure of the angle that is vertical to the one that measures 107˚. Note that angles that are vertical to each other are always identical, or in other words they have the same measure. Hence, the angle "vertical", or opposite to the one that measures 107˚ has to measure 107˚ as well.  You can also tell this is true because they look the same.

Now I'll find the measure of the angle vertical to the one that measures 73˚. As we know, vertical angles are identical, so the one vertical to it is 73˚.  

Here, I'll solve for angles 1 and 2. Like I said earlier, when a transversal crosses through 2 parallel lines, there will be 2 sets of angles that all have the same measurements.  

To solve for angle 1, simply know what angle is right below it, and that is the one that measures 107˚. (If you look at the 2 lines, you will see that both angle sets are essentially duplicates of each other.) Likewise, angle 2 has to be 73˚ because the one under it is also 73˚.

Angle 1: 107˚

Angle 2: 73˚

QUESTION 8:

Again, we have a transversal that passes through 2 parallel lines. One angle measures 95˚.  When there are 3 seperate angles along a straight line,  the one next to the one with the given measurement will be the same as that one.

So angle 3 is 95˚. To find angle 4, find the angle measurement that's vertical to angle 3, which is 95˚. Now, since that angle and angle 4 are supplementary (both form a straight line which is always 180˚), 95+x= 180.

(x stands for angle 4)

x+95= 180

x= 180-95

x= 85

Angle 4= 85˚.

QUESTION 9:

ANGLE 5: 49˚

When there is a transversal, there are 2 identical pairs of angles. Therefore, angle 5 must be 49˚.

ANGLE 6: 131˚

angle 5 and angle 6 form a straight line which means they are supplementary angles. Therefore, both angles must add up to 180˚. So 49+x= 180

x= 180-49= 131

(x stands for angle 6)

Hope this helps!! Also I worked pretty hard on this so brainliest would be appreciated :D

Practice problems if it helps :) : https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-geometry/cc-8th-angles-between-lines/e/parallel_lines_1

Answer:

1. No 2. No 3. Yes 4. No 5. Yes

Step-by-step explanation:

I won't put an explination cause you need it fast =)

Answer:

e=g-5 it's your correct answer

Answer:

\(\huge\boxed{\sf x =28 \textdegree}\)

Step-by-step explanation:

Given that,

∠IAK = 62°

∠IAK + ∠IAD = 90° (Complementary angles)

62 + ∠IAD = 90°

Subtract 62 to both sides

∠IAD = 90 - 62

∠IAD = ∠ACB (Corresponding angles are equal)

So,

∠ACB = ∠GCJ (Vertically opposite angles are equal)

So,

28° = x°

OR

\(\rule[225]{225}{2}\)

Answer:

28 degrees

Step-by-step explanation:

If two lines cross each other, it makes 4 angles, and 2 angles from opposite sides have the same length. Since line KL and line IJ crossed, angle KAI and angle LAJ will have the same angle.

--> Angle LAJ is 62 degrees

If we look closely, there is a triangle ABC, and since the question said that line KL and line FG is perpendicular, the angle ALG will be 90 degrees.

We know that in a triangle, there are three angles, and the angle measures combined equals 180.

Since we know two angles: 90 and 62, we take them away from 180 to find the last angle BCA.

--> 180 - 90 - 62 = 28

--> Angle BCA = 28 degrees

Like I said at the beginning, if two lines cross each other, opposite angles are the same size. So angle x will also be equal to angle BCA, which is 28 degrees.

Angle x = 28 degrees

Answer:About 154.5 pounds

Step-by-step explanation:

Answer:

154.58 as the easy answer

Step-by-step explanation:

Answer:≥

y≥32

Step-by-step explanation:

I hope this helps :)

Answer:

17

Step-by-step explanation:

divide 255 by 15

Answer:

true

Step-by-step explanation:

Answer:

True

Step-by-step explanation:

-I-7I

Hence, -7

Hope it helps!