Mathematics High School

this makes no sense to me lol​

This Makes No Sense To Me Lol

Answers

Answer 1

Answer:

me either lol sorry :)

Step-by-step explanation:

Answer 2

Answer:

A and B

Step-by-step explanation:

Basically all you have to do is combine those equations. How do you do that? You add/subtract the equations from each other, OR use substitution. It's hard to explain I recommend searching it up.

However, in this equation this is not what they are asking for. Only ONE equation has a solution when combined/substituted. Some have false solutions such as 3=0, which is not true. Some have infinite solutions where every number works.

Solving A:

This works because it actually gives us the value of y and x instead of giving us an incorrect statement.

Solving B:

This works as well!

Solving C:

This has no solution. It doesn't work and it ends up with 0 = -6, which is not true.

Solving D:

This has more than 1 solution.

Solving E:

This does not work, it has no solutions. It ends up with 0 = -2.

Related Questions

Is -1 a solution to 4x - 3 < 5?
(look at the picture)

Answers

Answer:

Yes

Step-by-step explanation:

Assuming that the question is asking for -1 to be plugged in as x

4(-1)-3≤5

-4-3≤5

-7≤5

help please, 25 points! pythagorean thereom

Answers

Answer:

the pythagorean thereom is a^2 + b^2 = c^2

Step-by-step explanation:

to find the length of the hypotenuse use a^2 + b^2 = c^2 or b^2 + a^2 = c^2

but in order to find the length of the legs use c^2 - a^2 = b^2 or

c^2 - b^2 = a^2

also need help with this.

Answers

14a -ac = 8w - 6w
a(14-c) = 2w
a= 2w / 14 - c

Answer:

a = 2w/c/15

Step-by-step explanation:

14a = ac + 2w

ac + 2w + 14a = 0

ac + 14a = -2w

14a + a = -2w/c

15a = 2w/c

a = 2w/c/15

if g(x) = -3x +1 fill out the following table of values​

Answers

Answer:

-3 (-6)+1

18 +1

19

-3 (-2) +1

6 +1

7

-3(0)+1

0+1

1

-3(2) +1

-6 +1

-5

-3(6) +1

-18 +1

-17

Step-by-step explanation:

you plug in the numbers for x into the equation and solve, and that's the value that goes into the box below the number you just plugged in

Write the point-slope equation of (1,6) (3,-6)

Answers

Answer:

0 (I think)

Step-by-step explanation:

(1,6) (3,-6)

X1 Y1. X2 Y2

-6-6= 0

3-1=2

0/2= 0

Answer:

y=-12/2x + -6

Step-by-step explanation:

m= rise/run = y2-y1/x2-x1

m=  -6 - 6 / 3 - 1    

m= rise/run  -12/2

PLEASE HELP ME


Factor the quadratic equation x2 + 2x – 15 into the following format: (x + a) (x -b)

Answers

Answer:

(x+5) (x-3)

Step-by-step explanation:

5 times -3= -15

5 + -3 = 2

Helppppl +13 points & +star

Answers

Answer:

hope it helps

Step-by-step explanation:

...........

Quick Pleaseee helpp

When is substitution method easier to use than graphing method!!!!

Answers

Answer:

When you do not have a graph paper

or

one of the equations has an isolated variable

or

when the equations are not in slope intercept form

The length of the two legs of a right triangle are 18 cm and 24 cm.
What is the length of the hypotenuse of the triangle?
O A. 30 cm
OB. 36 cm
OC. 42 cm
D. 48 cm

Answers

Answer: 30 cm

Step-by-step explanation: Take note that ^2 means to the second power.

a^2 + b^2 = c^2 (hypotenuse)

18^2 + 24^2 = c^2

324 + 576 = c^2

900 = c^2

To find the length of c you have to find teh square root of 900.

√c^2 = √900

c = 30

The length of the hypotenuse is 30 cm!

Hope this helped!

Ronald bikes 6.9 miles each day. How far has Ronald biked in seven days.

Answers

that would be 48.3

Answer:

48.3

Step-by-step explanation:

6.9 times 7= 48.3

Elijah walked 6 miles in 3 hours.what was his walking rate in hours per miles?

Answers

Answer:

2 Miles per hour

Step-by-step explanation:

velocity (speed) formula is distance/time.

In this case, 6/3=2

help me pass my class .

Answers

Answer:

about 3.6

Step-by-step explanation:

pythagorean theorem

sqrt 13

Help and you shall receive 20 points

Answers

Answer:

its D   7 2/5

Step-by-step explanation:

Write the expression-
The quotient of x and 8

Answers

Answer:

x ÷ 8

Step-by-step explanation:

Jennifer purchased for 2$ and p pounds of sliced turkey at 5$ per pound for a total of $13.25. Which equation represents jennifer's purchase from the grocery store?

Answers

Answer:

$2 + $5p = $13.25

Step-by-step explanation:

Given that:

Initial purchase = $2

Pound of sliced turkey = p

Cost per pound of sliced turkey = 5$

Total amount spent = $13.25

Jennifers purchase from grocery store :

Initial purchase + (pound of sliced turkey * cost or pound) = total amount spent

$2 + $5p = $13.25

Question 1: In January, a puppy weighed 4kg.
Three months later, the same puppy weighed 5kg.
What was the percentage increase in the puppy's weight?

Answers

Answer:

sorry bro I didn't understand

Simplify the expression below.

5/8m + 9 - 3/8m - 15

Answers

Here you go I hope it’s right

Jon thinks of a number between 1 and 10.The cube of the number is equal to the square of double the number.What is number jon is thinking of?​

Answers

Answer:

4

Step-by-step explanation:

4^2=8 8^2=64

4^3=64

Jon is thinking about 4

Describe the end behavior of the following exponential function f(x)=3

Answers

Answer:

the correct answer would be the 2nd one !! please make me most brainlessly!!!

Which two properties characterize an air mass?

Answers

Answer:

Step-by-step explanation: Air masses are given a two-part name that describes the humidity and temperature characteristics of the region where they form

Answer:

Air masses have fairly uniform temperature and moisture content in horizontal direction (but not uniform in vertical).

Step-by-step explanation:

Looked it up

Please help me It’ll help a lot

Answers

Answer:

heyy

the answers "20"

Step-by-step explanation:

Okay using the x that we have we find 40 and plug that into the graph and we have 20 :p

If you were going to solve -3(x + 5) = 27, what is the first step that you would do? Why did you start there?

Answers

Answer:

Step-by-step explanation:

Multiply -3 for x and for 5

-3x-15=27

When you have this type of equation the first thing you do is take off the parentesis

Then you pass the 15 to the other side and you get -3x= 27 +15 . After that you divide that for -3 and you get the x . In this case x= -14

Sorry if the english is bad, i hope this helps

What is the percent composition of Hydrogen in Acetone, C3H6O?
a, 62.0%
b, 10.4%
c. 27.5%
d. 19.9%

Answers

It’s c) I did this before I’m sure I’m sorry if it’s wrong
I think c (sorry if I’m wrong)

Can somebody plz help answer the missing terms correctly thanks so much!!

WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST :DDDD

Answers

Answer:

Step-by-step explanation:

your mom

Answer:

9. 5

10. 3

11. 1

12. 7

13. 48

14. 24

15. 9

16. 6

Plz help find the perimeter and the are of the following show work plz

Answers

the picture isn’t loading in

Find the slope and the -intercept of the line. y=-1/5x+7 plz i need help

Answers

Answer:

slope= -1/5

y-intercept=7

Step-by-step explanation:

y=mx+b is a linear equation

m=slope

b=y-intercept

The vertices of a triangle are (3,5), (-7,4) and (10,-2) then, what are the coordinates of the point of intersection of 3 medians of triangle? ​

Answers

Answer:

Step-by-step explanation:

Step 1: Identify the coordinates of each vertex. Step 2: Add all the x values from the three vertices coordinates and divide by 3. Step 3: Add all the y values from the three vertices coordinates and divide by 3. Step 4: Determine the centroid coordinate.

Wesley wants to have at least $50 to spend each day of his 7-day vacation. He plans to save $30 each month for 12 months. Which of the following shows that Wesley will save enough money for his vacation? Choose all that apply.

Answers

Answer:

i cant choose any that applies to this question because there is no picture added to it and there are no choices to choose from. If i were to solve it though, it would be; yes, he will save enough money for his vacation.

Step-by-step explanation:

I know he would have enough--and in this case more than enough, because since he's planning to save $30 for a whole year just for $50, when he could simply make $60--which is in fact more than needed for his goal-- in just 2 months. If he were to stick with his plan though, he'd make $360. I got that by multiplying 30 by 12.

Write each percent as a decimal and as a fraction in simplest form. 36. 200% 37. 135% 38. 152% 39. 0.03% 40. 0.45%​

Answers

Answer:

2.0 , 2/1.

1.35 , 1  7/20.

1.52, 1 13/25

0.0003, 3/10000

0.0045, 9/2000

Step-by-step explanation:

1.35 =  1 35/100 = 1 7/20

1.52 = 1 52/100 = 1 13/25

0.0045 = 45/10000 = 1 9/2000.

In a rectangle or a rhombus: If ZP = 4x - 9 and PY = 2x +5, find x.
Please help ASAP!!!! Will give brainliest!!!

Answers

Answer:X=7

Step-by-step explanation:

Answer:

zp= 7,and py= 9

Step-by-step explanation

zp=7                  

(2)(2)+5

(2)(2)+5

py=9      

(4)(4)−9

(4)(4)−9

=7

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