Mathematics High School

Help? Will give brainliest

Answers

Answer 1

Answer:

2) A

3) A

Step-by-step explanation:

3y + 4x = 15

(divide 15 by 3 to get y by itself... then subtract 4 to the side with 15 so you have the proper equation)

y = 5 - 4x (when you graph it, the y intercept is 5)

since x = -4y ... you substitute that into the second equation

-4y + 5y = 2

then solve for y

y = 2

so now you substitute y into the first line

x = -4(2)

x = -8

Related Questions

please help me with triangle angles. due today !

Answers

Answer:

Step-by-step explanation:

8x-1+3x+4+3x+9=180

14x+12=180

14x=180-12

x=168/14

x=12

Answer:

8x-1+3x+9+3x+4=180

8x+3x+3x=180+1-9-4

14x=168

x=12

Step-by-step explanation:

Some one help ASAP please help I’m stuck

Answers

Answer:

SOH CAH TOA

Step-by-step explanation:

/hyp/2=/ opp/ 2 +/Adj/2

x2=(1/21)2 + 1/28)2

−7×7+9× −1/−1 = ?
evaluate?

Answers

Answer:

-40

Step-by-step explanation:

-7 x 7 + 9 x (-1) / (-1)

-49 + 9 x (-1) / (-1)

-49 - 9 / (-1)

-49 + 9

= -40

There were 45 runners to start a race. In the first half of the race 2/3 of them dropped out. In the second half 2/5 of the remaining runners dropped out. How many runners finished the race?

Answers

Answer:

18 racers finished.

Step-by-step explanation:

In the first half, 30 racers dropped out, because 2/3 of 45 is 30. In the 2nd half, 12 racers dropped out, because that is 2/5 of 30. So, in the end, 18 racers finished. (I might have done this wrong i did my best)

What’s the commutative property of addition ?

Answers

Answer:

Its when you just swthc your thingy

Step-by-step explanation:

2+4=6

turns into

4+2=6

Answer:

When it is opposite

Step-by-step explanation:

I WILL GIVE YOU BRAINLY PLSS

What is the solution of x + 6 11
C. x –1

PLSS SHOW YOUR WORK PLSS

Answers

Answer:

9.34

Step-by-step explanation:

add 6 then mulitiply 11-1 xC=9.34

Mitch made 12 out of 40 shots during the championship game. What percent of his shot did Mitch make

Answers

Answer:

30%

Step-by-step explanation:

1) Divide how many shots Mitch made by the total amount of shots

12/40 = 0.3

2) Move the decimal place to places to the right to get the percentage.

0.3 --> 30%

Johnny left his house early in the morning for a run. he ran 2 miles north, 6 miles west, 3 miles north, 10 miles south, 8 miles east, and then 2 miles west. what distance did he run?

Answers

The answer is 31 miles

The total distance ran by Johnny after he left the house is D = 31 miles

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as D

Now , the value of D is

Substituting the values in the equation , we get

Let the total distance ran by Johnny be D = ran 2 miles north, 6 miles west, 3 miles north, 10 miles south, 8 miles east, and then 2 miles

So , D = 2 + 6 + 3 + 10 + 8 + 2

On simplifying the equation , we get

D = 31 miles

Hence , the distance is D = 31 miles

To learn more about equations click :

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What are the y values for the equation : y=0X-4 if x=-3

Answers

Note: Your equation expression seems a little unclear. So, I am assuming that your expression is

y = x - 4

The solution steps would anyway still clear your concept so that no matter what you can solve whatever the expression it is because the procedure remains the same.

Answer:

The value of y = -7 if x = -3

Step-by-step explanation:

Assuming the given the expression

[tex]y = x - 4[/tex]

Given that we have to find the value of y if x = -3.

so substituting x = -3 in the equation

[tex]y = x - 4[/tex]

[tex]y = (-3) - 4[/tex]

[tex]y = -3-4[/tex]

[tex]y = -7[/tex]

Therefore, the value of y = -7 if x = -3

The graph of the equation y = x- 4 is also attached below.

1.3.4b - What is the area of the composite polygon below? Be sure to include
proper units.
20 ft
12 ft
7 ft
8 ft
8 ft
34 ft

Answers

Show a picture please it would really help.

An engineer is building a bridge that should be able to hold a maximum weight of 1 ton. He builds a model of the bridge that is exactly 4 times smaller than the actual bridge.

16 ounces = 1 pound. 2,000 pounds = 1 ton.

If a test of the model shows that it holds 8,000 ounces, will the bridge hold 1 ton?

8,000 ounces on the model is equal to
ounces on the actual bridge.
Convert ounces to pounds. The actual bridge can hold
pounds.
Therefore, the bridge
hold 1 ton.

Answers

Answer:

the bridge holds one ton. on Edgunuity

Step-by-step explanation: <3

Answer: first one is 32000 the second one is 2000 and the third one Is it will hold 1 ton

PLEASE HELP, THIS IS A BENCHMARK. WILL GIVE BRAINLIEST!

Use the description of AABC below to solve Parts A and B.

m
Part A: Which of the following is the value of x?

A. x = 10
B. x= 5
B. x = 4
D. x = 2

Part B: Order the sides of ABC from shortest to longest. Drag and drop the displayed choices to order.

Answers

you need a picture of the shape.

Bsmegemeisneurmeuebeuee. E 23638 6738?g-/3

What number is half way between 60 and 110

Answers

Answer:

Step-by-step explanation:

85 is half way between 60 and 110.

Half way means the middle point from where both the point are at equal distance.

Given two numbers as follows:

Number1=60

Number2=110

To calculate a half way number between two number as follows:

=(Number1+Number2)/2

=(60+110)/2

=85

To check weater 85 is half way between 60 and 110

subtract 60 from 85 we get 25

subtract 85 from 110 we get 25

Thus both the numbers are 25 units away from 85.

So, 85 is half way between 60 and 110.

Learn more about half way, here:

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What is the measure of an interior angle of a regular nonagon?

Answers

Each angle of a regular nonagon is of 140°. A nonagon in which all sides are not equal and all angles are not equal. The measure of it’s angles are different but total sum of all its interior angles is always 1260°.

x = –8, y = 7, and z = –11. x - (-z)

Answers

Answer:

[tex]x - ( - z) = x + z =( - 8)+(- 11) \\ = \boxed{ - 19}[/tex]

-19 is the right answer.

WORTH 25 POINTS!!!!! Three times as many adults as students attended a game. The total attendance was 480. If 3x + x = 480 models this situation,
which two statements are true?
A)
3x = number of students
B)
x = number of adults
480 - X= number of adults
D)
360 adults attended.
E)
200 children attended.

Answers

Answer:

B x= number of adults 480-x = number of adults

Can someone pretty please help me... it’s only 2 questions! :(

Answers

Answer:

9. C 10. C

Step-by-step explanation:

Please gimme brainliest

Answer: c for both

Step-by-step explanation:

Promote means support, and the “general welfare” is the general good of the people.

The Preambles of the constitution at the beginning of it, so it couldn’t be a a conclusion, and there were no indexes in the Constitution. It had to be a summary or an introduction, Ndola it’s an introduction, it did not explain everything in the document like a a bunch, but it did state that it was a constitution.

Also, the question end should with an, so it had to be an answer starting with a vowel, so one of the last two, since the last one I saw wrong, it had to be c.

Simplify the expression.
7(9k + 2m)

Answers

Answer:

=63k+14m

Step-by-step explanation:

=(7)(9k+2m)

=(7)(9k)+(7)(2m)

Which inequality is NOT satisfied by this table of values

Answers

Answer:

Hope this helps better

Answer; y < x-1

Step-by-step explanation:

Trevor has 3 2/5 pieces of cake left over. If she wants to split it between her and her 9 friends, how much will each
person get?

Answers

Answer:

17/50.

Step-by-step explanation:

If we convert 3 2/5 into an improper fraction, we get 17/5.

If you don't read the question carefully, it's easy to think that the answer would be 17/5 ÷ 9. However, this is wrong.

The question says "her AND her 9 friends," so there are 9+1=10 people total.

Thus, the answer would be

17/5 ÷ 10 = 17/5 * 1/10 = 17/50.

Find the distance between (3,4) and (3,9)

Answers

Answer:

Step-by-step explanation:

x values are equal, so 9-4 = 5

50 – 5(4.3 – 1.3) ÷ 0.5

Answers

Answer:

(0.5, 1.3)(0.5, 1.3)

Step-by-step explanation:

Given equations are:

As we can see that the given equations are linear equations which are graphed as straight lines on graph. The solution of two equations is the point of their intersection on the graph.

We can plot the graph of both equations using any online or desktop graphing tool.

We have used "Desmos" online graphing calculator to plot the graph of two lines (Picture Attached)

We can see from the graph that the lines intersect at: (0.517, 1.267)

Rounding off both coordinates of point of intersection to nearest tenth we get

(0.5, 1.3)

Hence,

(0.5, 1.3) is the correct answer

Keywords: Linear equations, variables

What is the measure (in radians) of central angle in the circle below?
5 cm
0
2 cm
radians

Answers

Answer:

2.5

Step-by-step explanation:

Natasha used 75 beads to make a necklace
for her sister. Of the 75 beads, 25 were square.
The rest of the beads were round. What is the
ratio of round to square beads on the necklace?

Answers

Answer: 2:3

Step-by-step explanation:

25/75 beads are square. Thus, 1 out of every 3 beads (1/3) is square. With this information, 2/3 of the beads are round because 1 - 1/3 = 2/3.

This means that the ratio of round to square beads is 2:3.

please help me with these

Answers

Answer:

106/175

4 1/3

3 3/4

10 3/8

1/6

Sarah peeled 84 oranges in 7 hours. At that rate, how many oranges would she peel in 15 minutes?

Answers

Answer:

Sarah would peel 3 oranges in 15 minutes

Explanation:

I’m not sure if I did it right but i multiplied 7 by 60 (hours by minutes in an hour) and got 420. Then I divided it by 15 and got 28. Finally, I divided 84 by 28 and I got 3. I don’t if I am late or right for this question though.

Caroline needed to get her computer fixed. She took it to the repair store. The
technician at the store worked on the computer for 2.75 hours and charged her $114
for parts. The total was $320.25

Answers

Answer:

i need this for a challenge

Step-by-step explanation:

Subtract 4(2x-7) from 5(3x-2)

Answers

Answer:

7x+18

Step-by-step explanation:

Multiplay the numbers by for and five and solve

help!!!!!!!! i have no clue

Answers

Answer: Non-proportional

Step-by-step explanation:

The unit rate for the gas per gallon is $3.17. You want to find out if that is equal to the amount you would pay for 10 gallons at once. If you multiply the unit rate by ten, you would get 10 gallons = $31.70

So...you know that it is not proportional

Can I get help with 3 through 5

Answers

Answer: 3 is -4

Step-by-step explanation:

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