Mathematics High School

9th grade math help pretty please

9th Grade Math Help Pretty Please

Answers

Answer 1

Answer:

C.) This system has infinitely many solutions.

Step-by-step explanation:

y = 2x - 4

2x - y - 4 = 0

2x - y - 4 = 0 can be rewritten as y = 2x - 4 as shown below

2x - y - 4 = 0

-y = -2x + 4

-y/-1 = -2x/-1 + 4/-1

y = 2x - 4

y = 2x - 4 is equal to 2x - y - 4 = 0 because the slope is both 2 and both its y-intercept is -4, these two are coincidence, as they call it, meaning these two lines are the same, so its solutions are anywhere on its line. Shown below in a graph.

9th Grade Math Help Pretty Please

Related Questions

The graph below relates y, the distance Kelly walked, to x, the amount of time that Kelly walked. What is the value of y when x = 1 ?

Answers

Answer:

You need to show the graph.

Step-by-step explanation:

What is the ordered pair for point B?

Answers

Answer:

(4,2)

Step-by-step explanation:

..................................

b -2 = 9/b-2
Answer ?

Answers

Step-by-step explanation:

I don't know if it's correct

b-2=9/b-2 (b isn’t equal of 0)
b=9/b-2+2
b=9/b
b^2=9
b=3 or b=-3

help me l,ll give you brainest

Answers

Answer:

Step-by-step explanation:

he did the question wrong completely, so, check #4, #2, and #3

Answer:

the last three choices

Choose the odd one out & give a reason for your answer. 2/6. 4/10. 6/18. 8/24

Answers

Answer:

odd one out is 4/10

Step-by-step explanation:

it is so because when u simply others u get 1/3 as final answer and this u get 2/5

Which expression is simplified in exponential form?

Answers

Step-by-step explanation:

theirs no expressions????

What is the inverse of the function f(x) = 2x-10?

Answers

Answer:

One sec

Step-by-step explanation:

A scuba diver is swimming 15 feet below the water’s surface.
The diver swims up slowly at 0.5 feet per second for 4 seconds; and then stops to look at an eel. Finally, the diver swims up for 3 more seconds at 0.4 feet per second. What is the diver’s new depth?

Answers

Answer: -11.8  =  11.8 feet below the water's surface

Step-by-step explanation:

-15 + (0.5)(4) + 3(0.4)

-15 + 2 + 1.2

-11.8

Mr Sanchez brought in 2 magazines for 9.95

Answers

Answer:

good for Mr. Sanchezbut thats a bit expensive ya know?????/

Step-by-step explanation:

Is there anymore info??

what is the common factors of 5 and 6


Please do not google it

Answers

9514 1404 393

Answer:

  1

Step-by-step explanation:

The only integer factor common to 5 and 6 is 1.

__

This will be true for any pair of natural numbers that differ by 1.

If I had an iPhone 6 that was 12 by 9 inches and an iPhone X that was 17 by 8 inches, how many feet would they be? If you want a challenge divided by 2 at the end.

Answers

Answer:

$13.41

Step-by-step explanation:

maybe, I'm not that sure :/

btw you can, can you please mark me brainliest :)

find the slope of the line y=-1/4x+9

Answers

Answer:

slope = - [tex]\frac{1}{4}[/tex]

Step-by-step explanation:

The equation of a line in slope0 intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = - [tex]\frac{1}{4}[/tex] x + 9 ← is in slope- intercept form

with slope m = - [tex]\frac{1}{4}[/tex]

HElp wHat iS iT!?!?!??!

Answers

Answer:

a

Step-by-step explanation:

Sunny's Surf Shop sold 160 surfboards this week, which was 320 percent of the number of surfboards sold last week. How many surfboards did Sunny's Surf Shop sell last week? O 16 O 50 O 160 512​

Answers

Let, the number of Surfboards sold last week = x

Then, x * 320% = 160

x * 3.20 = 160

x = 160/3.20

x = 50

In short, Your Answer would be Option B

Hope this helps!

(no need to give brainliest) :)

Answer:

The answer would be B, 50.

Use elimination to solve each system of equations. 1. x + y = 4 x – y = 7

Answers

Answer:

Step-by-step explanation:

1(x+y=4)

-1(x-y=7)

x+y=4

-x+y=-7

x-x=4-x

-x=x=-7+x

4-x=-7+x

4-x-x=-7

4-2x=-7

-2x=-7-4

-2x/-2=-11/-2

x=5.5

What is the slope of the line shown on the graph?


​

Answers

1/3 because the slope triangle goes over three and up one and it is rise over run.

Answer:

1/3

Step-by-step explanation:

rise over run- the line goes up one and over three everytime it perfectly intersects a sport on the graph

quadratic equation usingvquadratic formula​

Answers

Answer:

Sure what's the problem. I don't see a problem or an attachment  

Step-by-step explanation:

The temperature at 10 A.M. was -4 °F. By noon the temperature had risen 8 °F. At 8 P.M., the temperature had dropped 10° F. What was the temperature at 8 P.M.? *

Answers

Answer:

-6

Step-by-step explanation:

-4+8=4

4-10= -6

Determine the amount of the semi-annual coupon for a bond with a face value of ₱ 300,000 that pays 10%, payable semi-annually for its coupons.

Answers

Answer:

Copuon= $15,000

Step-by-step explanation:

Giving the following information:

Face value= $300,000

Coupon rate= 10%

First, we need to determine the semiannual coupon rate:

Semiannual coupon rate= 0.1/2= 0.05

Now, the coupon using the following formula:

Copuon= face value*coupon rate

Copuon= 300,000*0.05

Copuon= $15,000

Plsss help me and I’ll give brainliest

Answers

Answer:

Bonnie is correct

Step-by-step explanation:

Ok so bonnie said to buy five shirts  so 5 x 12 = 60 but minus the $10 because the 10 dollar dicount now if you do 60 - 10 = 50 so you can buy five shirts.

Answer:

Susan is correct

Step-by-step explanation:

( HELP PLEASE <3)
a person riding in an elevator travels 150 feet in 30 seconds. What equation represents this relationship? How many feet will the person travel on 10 seconds?

A.) y=5x;5 feet
B.) y=3x;30 feet
C.) y= 1/5x;2 feet
D.) y=5x;50 feet

Answers

The answer is B like May Duh

Answer:

The answer is A

Step-by-step explanation:

If you divided by 150/30 = 5.

So the answer is A. y=5x;5 feet.

81-1 1/5 x < 55
please help i need help fast

Answers

Step-by-step explanation:

81 - 1.2x < 55

81 < 55 + 1.2x (add 1.2x to both sides)

1.2x > 26 (subtract 55 from both sides)

x > 21 2/3.

What is the measure of ABC?

Answers

I think it’s 59 or choice one but to be fair algebra wasn’t my best subject

You buy five books that are equal in
price and a DVD for $8. Your total
comes to $26.50. Write an equation
that would help you determine the cost
of one book.
( Hint it’s not 3.70!)
Please help!

Answers

If it’s not $3.70, maybe it’s looking for the equation instead like b = (26.50 - 8)/5?

12 + -4 - 2/5 + J - 4/5 J + 5 ​

Answers

Answer:

1/5J + 63/5

Step-by-step explanation:

THERES A PIC!! pls answer!! will give brainiest!!

Answers

Answer: 5

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

At dinner, the meal cost $22 and the sales tax of $1.87 was added to the bill. How much would the sales tax be on a $66 meal? What is the tax rate for meals in this city?

Answers

The answer will be 23.87

convert -0.0647 to Scientific Notation

Answers

Answer:

6.47  x  10^-2

Step-by-step explanation:

Answer: -6.47 × 10^-2

Step-by-step explanation:

move the decimal 2 places to the right

free for all
gl
:) dun dun DUN

Answers

Answer:

Step-by-step explanation:

TYSM

HAVE A GREAT DAY

Answer:

Step-by-step explanation:

DRINK WATER! EAT SAY HEALTHY!!!!! <3

La suma de un número natural y su cuadrado es de 72. Encuentra el número del que se trata.

Answers

Answer:

8

Step-by-step explanation:

Sea el número x El cuadrado será x ^ 2

Entonces la suma será; x ^ 2 + x = 72 x ^ 2 + x-72 = 0

x ^ 2 + 9x-8x-72 = 0

x (x + 9) -8 (x + 9) = 0

(x + 9) (x-8) x = 8 o -9

Como solo estamos considerando números naturales, la respuesta correcta es 8

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