i need help 9th grade math

I Need Help 9th Grade Math

Answers

Answer 1

[tex]y2= m(x2 - x1) + y1[/tex]

Thus the third Option is the correct answer.


Related Questions

In a department store, a $40 dress is marked, "Save 25%. What is the sale
price of the dress?

Answers

Answer:$30

Step-by-step explanation:

$40*25%=$10 discount

$40-$10= $30.00

Answer:

The dress' price is $30.

Step-by-step explanation:

The discount on the dress is for 25% off.

25% of $40, is $10.

$40 - $10 is $30, resulting in a sale price of $30.

Hope this helps!

Please include working out. =D You will get 30 points for it.

Answers

Answer:

It should be c

Step-by-step explanation:

Your formula is

Number of color ball/total ball

so 8/20 x 7/19 x 3/18 then convert to fraction

The probability the first ball is red is 0.4 or 8/20 or 2/5

The probability the next is blue is 7/19

The probability of the next being white is 6/18 or 1/3.

Multiply them together because these are independent events that must all occur and we get 2*7*1= 14 as the numerator

5*19*3=285 for a total probability of 14/285.

C

simplify this equation

-8 (7x - 4)

Answers

-56x+32

Hope this helps

Answer:

-8(7x-4)

-56x+32

Step-by-step explanation:

hdhjsjshkdkd

d

d

d

d

d

HELP PLEASEEEEEEEEEEEEEEEEEE

Answers

Answer:

19, 18, 15.5

Step-by-step explanation:

To solve this problem, you need to substitute the given values into the function.

b(x = -2) = 18 - 0.5(-2) = 18 + 1 = 19

b(x = 0) = 18 - 0.5(0) = 18 - 0 = 18

b(x = 5 ) = 18 - 0.5(5) = 18 - 2.5 = 15.5

Simplify as far as possible.
7

5

3

5

Answers

Answer:

4 sqrt(5)

Step-by-step explanation:

7 sqrt(5) - 3 sqrt(5)

These are like terms so we can subtract

4 sqrt(5)

HELP PLSSS THIS IS HARD SOMEONEEE

Answers

B would be your answer

Given f(x)=3x^2-5x+k and the remainder when f(x) is divided by x-4 is 38, then what is the value of k? brainliest for correct answer

Answers

Answer:

30

Step-by-step explanation:

please give me a brainlist

What is 1,00000000000000000000000000 x 2,00000000000005567898765434567899876543456787654

Answers

Answer:

2

Step-by-step explanation:

caulculator

Need help. Image below. (Geometry)

Answers

Answer:

B is subset of A

Step-by-step explain

I think in my college

is 28.42 > 28. 404 true

Answers

Answer:

28.42 > 28.404

it is true


5. A w-foot wide path is to be built around a rectangular space that is 80
feet by 50 feet. Write and simplify an expression for the total area.

Answers

To find the area of the path, we'll need to find the area of the space with the path and subtract the area of the inner space.

Total area: (80 + w)(50 + w)

Inner area: 80 x 50

Area of the path: (80 + w)(50 + w) - (80 x 50)

(4000 + 80w + 50w + w^2) - (4000)

4000 + 130w + w^2 - 4000

w^2 + 130w

w(w + 130)

Expression for the total area: (80 + w)(50 + w)

Expression for the area of the path: w(w + 130)

Hope this helps!! :)

If two books costs $90 how much for 5 book

Answers

450 all you need to do is multiply hope this helped!!

Answer:

$450

Maybe this will help

Please help me with question 8

Answers

Answer:

1.6

Step-by-step explanation:

sorry this is probably really weird to cut peanuts like this

Answer:

5/8 pounds

Step-by-step explanation:

5/2/4 Convert, then multiply by one fourth

Using the exchange rate £1 = $1.34, calculate how many £ are in $7.25. Give your answer rounded to 2 dp.

Answers

Answer:

£5.41

Step-by-step explanation:

7.25/1.34 = 5.41044...

Round = 5.41

Pineapple galaxy is right!


Given the vertex ( 4, 6 )and the point(1, -3), write the vertex form equation of the quadratic
function.

Answers

Answer:

[tex]\displaystyle f(x) = -(x-4)^2 + 6[/tex]

Step-by-step explanation:

A given quadratic has its vertex at (4, 6) and the point (1, -3). We want to write the equation in vertex form of the quadratic.

Recall that vertex form is given by:

[tex]\displaystyle f(x) = a(x-h) ^2 + k[/tex]

Where (h, k) is the vertex and a is the leading coefficient.

Since our vertex is at (4, 6), h = 4 and k = 6:

[tex]\displaystyle f(x) = a(x - 4)^2 + 6[/tex]

To determine the leading coefficient, since we are given that (1, -3) is a point on the parabola, when x = 1, y = -3. Substitute and solve for a:

[tex]\displaystyle \begin{aligned} (-3) & = a((1)-4)^2 + 6 \\ \\ -3 & = a(-3)^2 + 6 \\ \\ 9a & = -9 \\ \\ a & = -1 \end{aligned}[/tex]

Hence, the leading coefficient a is -1.

Then our equation in vertex form is:

[tex]\displaystyle f(x) = -(x-4)^2 + 6[/tex]

Is the following graph proportional or non-proportional?

Proportional
Non-Proportional
Not enough information

Answers

Answer:

non-proportional

Step-by-step explanation:

The line doesn't go through the origin and it's not a straight line therefore the graph is not proportional. Hope this helps :)

Answer:

Not proportional

Step-by-step explanation:

The graph is not proportional because the line doesn't go through the origin. If the line start from the origin and went up it would be a proportional graph.  

8. Jackie is creating a spreadsheet to keep a record of amounts she has collected
from customers for candy boxes she has sold to them. She must write a linear
equation in two variables to represent the amount collected in terms of
number of boxes sold. She has been using the table below to determine the
amount to charge.

Which linear equation in two variables can Jackie used to represent the amount of collected in terms of number boxes sold in her spread sheet?

A. y=5.5x+6.75

B.y=13.5x-1.25

C.y=13.5x+12.25

D.y=6.75x+5.5

Answers

Answer:

D. y = 6.75x + 5.5

Step-by-step explanation:

The slope intercept form:

y = mx + b, where m- slope, b- y-intercept

Use two ordered pairs from the table and work out the equation.

(1, 12.25) and (3, 25.75)

Find the slope:

m = (y₂ - y₁)/(x₂ - x₁)m = (25.75 - 12.25)/(3 - 1) = 13.5/2 = 6.75

Find the y- intercept:

12.25 = 6.75*1 + bb = 12,25 - 6.75b = 5.5

The equation is:

y = 6.75x + 5.5

Correct choice is D

(1,12.25)(3,25.75)

Slope

m=(25.75-12.25)/3-1m=6.75

Equation in point slope form

y-12.25=6.75(x-1)y=6.75x+5.5

5{[(4+6-8)-4]-(1+2⁴-3+6)}​

Answers

Answer:

30

Step-by-sçtep explanation:

2/9 divided by 5/12 in a simples form
answer is a fracton

Answers

Answer:

8 / 15

Step-by-step explanation:

2/9 ÷ 5/12

= 2/9 × 12/5            Reciprocal of 5/12

= 2×12 / 9×5           Multiply num. by num. and denom. by denom.

= 24 / 45                 Find LCD

= 24 ÷ 3 / 45 ÷ 3     Divide num. and denom. by LCD to simplify.

= 8 / 15

please help :D i give brainliest
In an isosceles triangle, the length of the base is half of the length of a leg. The perimeter of this triangle is 50 cm. Find the lengths of all sides.

Answers

Answer:

10 cm, 20 cm, 20 cm

Step-by-step explanation:

Let the base is x, then the legs are 2x each.

The perimeter is:

x + 2x*2 = 505x = 50x = 10

The base is 10 cm and legs are 20 cm each.

QUICKLY! ILL GIVE BRAINLEST AND THANKS!!

The number of kilometer, k, an airplane flew is shown in the table, where the time, t, is hours after take off. Choose the most appropriate scale for graphing this data set.

Answers

Answer:

t one because changing for t is approximately 1

and for kilometers is better you choose 1000

Graph: y
2 + 5
y
X
y
8
6
4
2.
x
-4
-2.
2
4.
6
8
-2
-4
Draw
Click or tap the graph to plot a point.

Answers

This is how it should look graphed.

The graph of [tex]y = \frac 34x +5[/tex] has a slope of 3/4 and a y-intercept of 5

The linear equation is given as:

[tex]y = \frac 34x +5[/tex]

Set x = 0

[tex]y = \frac 34 * 0 +5 = 5[/tex]

Set x = 1

[tex]y = \frac 34 * 1 +5 = 5\frac 34[/tex]

Set x = 2

[tex]y = \frac 34 * 2 +5 = 6\frac 12[/tex]

The above means that, the graph of [tex]y = \frac 34x +5[/tex] passes the following points

[tex](x,y) = \{(0,5), (1, 5\frac 34), (2,6\frac 12)\}[/tex]

See attachment for the graph of the linear function [tex]y = \frac 34x +5[/tex]

Read more about linear equations at:

https://brainly.com/question/14323743

what is the answer? 10 + (–4) =

Answers

answer

6

explanation

10+(–4)

When there is a + sign Infront of an expression with parentheses, the expression remains the same.

10–4

Subtract the numbers.

6

The answer is 6

Does anyone know the answer to 8% of 65?

Answers

Answer:

5.2

Step-by-step explanation:

I just used a calculator

Answer:

5.2

Step-by-step explanation:

You change 8% into a fraction so it will be 8/100. So the question will now be

8/100 X. 65/1

So when you multiply them you will get 5.2

MARK AS BRAINLIEST.

I got Points to burn, here you go

6÷2(1+3)

Answers

Answer:

12

Step-by-step explanation:

huhiihiuhihihihihihi

Answer:

1+3=4 and 2 times 4 is eight. 8 divided by 6 is 1.33333333333333333333

Evaluate using suitable identity:
d). 9.9²​

Answers

Step-by-step explanation:

9.9²

(10-0.1)²

= 10² -2 (10) (0.1) + 0.1²

= 100 -2 + 0.01

= 98.01

Hope it helps you

Answer:

★ Solution :-

[tex]\sf \longmapsto 9.9^2[/tex]

[tex]\sf \longmapsto (a - b)^2 = a^2 - 2ab + b^2[/tex]

Here,

a = 10b = 0.1

[tex]\sf \longmapsto (10 - 0.1)^2 = 10^2 - 2(10)(0.1) + 0.1^2[/tex]

[tex]\sf \longmapsto 10^2 - 2(10)(0.1) + 0.1^2[/tex]

[tex]\sf \longmapsto 100 - 2 + 0.01[/tex]

[tex]\sf \longmapsto 98.01[/tex]

ts 2
What is the slope of the line shown below?
y
40
30
20
10-
-40
30...20...10
11
20
30
40 X
10
-20
30
40

Answers

Hello there!

When we are given the graph of a line and two points on the graph, we can calculate the slope of the line using Rise/Run.

Rise=How many units we move up (here, the rise is 3)

Run=How many units we move left or right (Here, the run is 5)

So the slope of this line is [tex]\frac{3}{5}[/tex]

Hope this helps you!

~Just a joyful teen

[tex]SilentNature(GraceRosalia)[/tex]

-6+2u≤2 ?????????????????

Answers

Answer:

2u≤8⇒u≤4

Step-by-step explanation:

how do u know its a square root ? do u divide?

Answers

Yes you do divide , and a Square root of the numbers operation of squaring a number . It is the value of power 2 of the number . It is the number the we need to multiply by itself to get the original number.

HIGHWAYS Interstate 90 is the longest interstate highway in the United States, connecting the cities of Seattle, Washington, and Boston,
Massachusetts. The interstate is 4,987,000 meters in length. If 1 mile = 1.609 kilometers, how many miles long is Interstate 90?
Oa 3.099,441 mi
Ob. 3099 mi
Oc. 8,024,083 mi
O d. 8024 mi

Answers

Answer:  Choice B)  3099 mi

=============================================================

Explanation:

4,987,000 meters = 4,987 kilometers

Divide by 1000 to go from meters to kilometers. This is because 1 km = 1000 m. Or in short, we just chop off those last three zeros at the end.

Also, because 1 mile = 1.609 km (approximate), this means we divide by 1.609 when converting from km to miles

So,

4,987 km = 4987/(1.609) = 3,099.4406 miles approximately

This rounds to 3099 miles

----------------

You can optionally show your work like this:

[tex]4,987,000 \text{ m} * \frac{1 \text{ km}}{1000 \text{ m}}*\frac{1 \text{ mi}}{1.609 \text{ km}}\\\\ = \frac{4,987,000*1*1}{1000*1.609} \text{ mi} \\\\\approx 3099.4406 \text{ mi}\\\\ \approx \textbf{3099 mi}[/tex]

Notice that the "km" and "m" units cancel out when going from the first step to the second step. All that's left is the "mile" unit.

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