Mathematics High School

pls help ill mark brainliest​

Pls Help Ill Mark Brainliest

Answers

Answer 1

Answer:

No solution or B

Step-by-step explanation:

Multiply eq1 by 3.

3y=18x+6

3y-18x=12

Regroup:

18x-3y=-6

-18x+3y=12

Add:

0=6???

Impossible

So no solution.

Hope this helps plz mark brainliest :D

Answer 2

Answer:

No solution

Step-by-step explanation:

First we need to solve the equations.

I'll use the combining method

To do the combining method you need to get one of the variables in the first equation to be the negative correspondent to the same variable in the second equation.

(Ex:

If there was 2x in the first equation we would want there to be -2x in the second so they cancel out.)

y=6x+2

subtract 6x from each side to get the variables to line up

y-6x=2

3y-18x=12

To get -6x to equal 18x, we will multiply everything in the first equation by -3

-3y+18x=-6

3y-18x=12

Now combine the two terms

-3y and 3y cancel out

18x and -18x cancel out

-6+12=6

We are left with 0=6.

0 does not equal 6 so there is no solution.

Related Questions

y- 22= 89
y-22 + __ = 89 +22
y= __

Answers

Answer:

Step-by-step explanation:

57

Answer:

The answer will be 57

hope this helps

What is the greatest common factor of 60,70, and 80

Answers

Answer:

10

Step-by-step explanation:

Answer: The GCF of 60, 70, and 80 is 10.

Step-by-step explanation: If you think about it, the GCF is definitaly going to be 10. That is because you can multiply 10 to get 60, 70, and 80. There is no other number higher than 10 that can be multiplied by something to get all of these values.  

What is 60% of 30? A. 24 B. 12 C. 21 D. 18

Answers

Answer:

18

Step-by-step explanation:

60% 0f 30 is 18

D. 18

Yeah it is d.18. a easy way to do lees cent when they have a zero, is just multiply the tens place numbers..so 6x3=18. meaning 60% of 30 is 18

You want to know the opinions of drivers with valid licenses across America on the issue of establishing a law that requires individuals to take and pass another driver's test at the age of 65 to determine whether they may retain their license. You obtain a list of all licensed drivers and mail a survey to a random sample of 10,000 drivers. Of those, 6,457 responded and 46% say they favor the test. Which of the following statements is true? (5 points)

A. Because random sampling is used, we can feel confident that the percentage of all
drivers with a valid license who say they favor the test is close to 46%.
B. The results of this survey may be affected by nonresponse bias.
C. We cannot trust these results because the survey was mailed. Only survey results
from face-to-face interviews are considered valid.
D. Because more than half of those who were mailed the survey actually responded,
we can feel fairly confident that the actual percentage of all drivers with a valid
license who say they favor another test is close to 46%.

Answers

Answer:

The results of this survey may be affected by nonresponse bias

Step-by-step explanation:

Took the test :)

Answer:

B.  The results of this survey may be affected by nonresponse bias.

Step-by-step explanation:

I took the test

The ratio of green to red jelly beans in a jar is 4 to 6. If there are 28 green jelly beans, how many total green and red jelly beans would be in the jar?​

Answers

4 x 7 = 28

6 x 7 = 42

42 is the answer UvU

Answer:

76 jelly beans total

Step-by-step explanation

4 x 8 = 28

6 x 8 = 48

28 + 48 = 76

Find the discriminant of 3x2 - 10x=-2.

Answers

Answer:

x= 4/5 or 0.8

Step-by-step explanation:

Answer: im going with the person on top so i dont have to do anything

Step-by-step explanation:

What is the slope of the line that passes through the points (-5, 0) and (7, 8) ? Write your answer in simplest form

Answers

Answer

two-thirds

Step-by-step explanation:

8 over 1 2simplified is 2 over 3

If x=4 y=-3 and z =5 find the value of 5y +2x-z

Answers

The answer is -12.

All you have to do is substitute the variables for their values and solve.

Hope this helps!

Answer:-12

Step-by-step explanation:

So if the equation is 5y+2x-z and the substitutions are x=4     y=-3      z=5 , all you have to do is replace each variable with its given numbers. Like so

5(-3)+2(4)-5

Now what you have to do is simplify

Negative times a positive is a negative

Negative times a negative is a positive

Positive times a positive is a positive

So....

-15+8-5

-20+8

-12

This is a simple substitution problem. Remember the basics of negatives and positives! Than you will be just fine! :D

2x-5(x-4)=-7+3x+15 pls help
Asap

Answers

Answer:

x=2

Step-by-step explanation:

2x-5x+20=-7+3x+15

-3x+20=8+3x

20-8=3x+3x

12=6x

x=2

Help you yall
thank you

Answers

A,C,D I’m pretty sure
The answer is A,C,D :)

what is the answer to this? −1.2b−5.3≥1.9

Answers

Answer:

b≤−6

here u go

Answer:

b ≤ -6 ✅

Step-by-step explanation:

To solve an inequality, we will solve just like a normal equation. The goal is to isolate b, so we can determine the set of values it can take on.

Step 1: Add 5.3

We need to reverse the operation - 5.3, so we add 5.3.

-1.2b - 5.3 + 5.3 ≥ 1.9 + 5.3

-1.2b ≥ 7.2

Step 2: Divide by -1.2

We need to reverse the multiplication that is multiplying b by -1.2, so we will divide. However, we must remember an important rule first.

Important: When we divide by a negative number in an inequality, we must reverse the inequality sign, so ≥ becomes ≤.

-1.2b / -1.2 ≥ 7.2 / -1.2

b ≤ -6 (remember to reverse the sign!)

Step 3: Check

We now substitute our answer in and see if it is correct. We will use a number that is smaller than -6, for example, -8.

-1.2(-8) - 5.3 ≥ 1.9

9.6 - 5.3 ≥ 1.9

4.3 ≥ 1.9 ✅

We can check again with -6, since this and all numbers smaller than it should be a solution set.

-1.2(-6) - 5.3 ≥ 1.9

7.2 - 5.3 ≥ 1.9

1.9 ≥ 1.9 ✅

b ≤ -6 ✅

What is the slope-intercept form of the equation of the line that passes through the point (-6,1), and is perpendicular to the graph of 2x + 3y = -5

Answers

Answer:

Y= -3/2x-8

Step-by-step explanation:

what is the sum of the interior angles of a heptagon ?

Answers

Let n be rhe number of vertices in the polygon, then the sum of all interior angle is (n - 2) × 180°.

Number of sides in a heptagon = 7

So, n = 7

So,

the sum of the interior angles of a heptagon

= (7 - 2) × 180°

= 5 × 180°

= 900°

Answer:

900

Step-by-step explanation:

PLEASE HELP SHOULD BE EASY!!!!!

Answers

Answer:

it's A

Step-by-step explanation:

hope this helps u with whatever you are doing!

Answer:

1.

Step-by-step explanation:

I just know.

please help me!! PLEASE HELP ME!! please

Answers

b

Step-by-step explanation:

because it is a function

What is the area of this polygon on a coordinate plane?

20 square units
9 square units
3 square units
14 square units

Answers

Answer:

i need a picture or something to solve this so...

Step-by-step explanation:

Graph 8x−4y=16. From Big Ideas Math

Answers

Solve for y.

8x−4y=16

-4y = -8x + 16

y = (-8x + 16)/-4

y = (-8x)/-4 + (16/-4)

y = 2x - 4

We only need two points to graph linear equations.

Now let x be 0 and solve for y.

y = 2(0) - 4

y = -4

This leads to the point (0, -4).

We need another point.

Let y = 0 and solve for x.

0 = 2x - 4

4 = 2x

4/2 = x

2 = x

This leads to the point (2,0).

Plot these two points on the xy-plane and connect the points with a straight line.

I'll let you do that.

Understand?

Chris ate 1/4 of the pizza.if the pizza has eight slices, how many slices are lef

Answers

Answer:

6

Step-by-step explanation:

1/4 = 2/8

8/8 - 2/8 = 6/8  

This means 6 slices are left out of 8 slices.

Need help! only have today till I turn in!

Answers

Answer:

yes

Step-by-step explanation:

(y1-y2)/(x1-x2)=(10-6)/(8-0) OR (6-10)/(0-8)
= 0.5
In that case you now know. The answer to the first blank (coefficient of x)
To find the y intercept (the second blank), which I will call c, you can use either pair of the coordinates and substitute them in the equation together with the gradient you found previously.
If you choose to sub in (0,6) and since gradient=0.5,
Then: 6=0.5(0) + c
therefore, c=6
Likewise, if you choose to sub in (8,10)
Then: 10=0.5(8) + c
Therefore, c also equals to 6
So in conclusion the gradient of the slop is 0.5 and the y intercept is 6
The linear function will be: y=0.5x + 6

Samir took a total of 21 quizzes over the course of 3 weeks. After attending 6 weeks of school this quarter, how many quizzes will Samir have taken in total? Solve using unit rates.

Answers

42 because 21 time 2 equals 42
3 weeks= 21
3•2=6
21•2=42

Algebraic expression for the following verbal expression Mary has$2x and lily has 7 dollars more how much does Lilly have

Answers

Answer:

9

Step-by-step explanation:

2+7=9

You are a landscaper, and you are designing a fence to enclose part of a yard. The section to be enclosed is rectangular and has a width of 21 feet and a length of 38 feet. What length of fence, in feet, will you need to enclose this part of the yard? 59 60 118 120 798

Answers

Answer:

If you draw this out, you can see that total fence equation will be:

2L + 4W = 1200

Simplify, divide by 2

L + 2W = 600

L = (600-2W)

:

Area;

A = L*W

Substitute (600-2W) for L:

A = (600-2W)*W

A = -2W^2 + 600W; a quadratic equation

 

:

The dimension that will produce the greatest area will be the "axis of symmetry

which is: x = %28-b%29%2F%282a%29

:

In this equation a=-2, b=600

W = %28-600%29%2F%282%2A-2%29

W = %28-600%29%2F%28-4%29

W = +150 ft is the width

:

Find the length

L = 600 - 2(150)

L = 300 ft is the length

:

We can say the a field 300 by 150 gives he greatest area

:

This illustrated on a graph where y axis is the area and x axis is the width:

Step-by-step explanation:

Answer:

798

Step-by-step explanation:

21x38=798

Which statement illustrates the distributive property?

Answers

Answer:

3(4+5) = 3(4) + 3(5)

Step-by-step explanation:

in distributive property, you multiply the number outside the parenthesis by both of the numbers inside, but still keeping the sign the same.

Answer:

b

Step-by-step explanation:

What method can be used to prove the triangles below are congruent

Answers

Answer:

SSS?

Step-by-step explanation:

I don't know why the answers don't offer this an option. However, the side that shares both triangles must be congruent to itself and the other highlighted congruent parts are sides, not angles. Therefore by my calculations, the answer has to be SSS, but this isn't a choice.

Please let me know if you need more help :)

Help pls..............!!!!!!!!!!!

Answers

Answer:

you add it all up and lever the sides

Step-by-step explanation:

how to find common denominator​

Answers

find a common multiply between the two denominator

Answer:

To make the denominators the same  Multiply top and bottom of each fraction by the denominator of the other.

Step-by-step explanation:

What decimal is equivalent to 5/6?

Look at the picture.

Answers

Answer:

The answer is B

Step-by-step explanation:

Answer:

B. 8.3 with the bar on the 3

Step-by-step explanation:

B because the decimal of 5/6 is 8.3333333 and so on to represent the repeating and endless 3 put a bar on the 3.

Henry is making a corn grits recipe that calls for 14 cup of corn grits for every 12 cup of water.
How much water will he need if he uses 1 1/2 cups of corn grits?

Answers

Answer:

Im not sure right now ill answer back when i know

Step-by-step explanation:

Answer:

3/2 cups

pls give brainliest

The equation for line 1 is

Answers

Answer:

y=1x-5

Step-by-step explanation:

Answer:

The equation for line one is y = -2x - 5

what is the slope of the line that passes through the points (48,10) and (-36,17)​

Answers

Answer:

slope is -1/12

Step-by-step explanation:

slope =y2 - y1 / x2-x1

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