i need help 9th grade math

I Need Help 9th Grade Math

Answers

Answer 1
The answer is -4. Because there is 9 total negative and 5 total positive. So that means 5 - 9 = -4

Related Questions

What is the volume of the rectangular prism?

Answers

volume= l x w x h 8 x 4 x 8 = 256cm

I need help finding this answer, check the screenshot for all the info

Answers

The volume of the cylinder is 128, rounded to the nearest tenth is 130
Rounded Answer: 804.3
Full answer: 804.25

Cooper asked his classmates, "How many days do you floss your teeth in a
typical week?" The table shows Cooper's data.
How many observations did he record?
A. 24
B. 7
C. 27
D. 21

Answers

Answer:

D

Step-by-step explanation:

Each box represents one observation.The data table is 7 boxes by 3 boxes.    7 * 3 is 21, so the answer is D.

Hope this helps :)

Have a nice day!

Use the drawing tools to form the correct answer on the graph.

Draw the solution point, or points, for this system of equations.

Answers

Answer: look at the attached image

Step-by-step explanation:

A triangle is dilated by a scale factor of n = one-third. which statement is true regarding the dilation? it is a reduction because n > 1. it is a reduction because 0 < n < 1. it is an enlargement because n > 1. it is an enlargement because 0 > n > 1.

Answers

The second statement is true. It is a reduction because 0 < n < 1.

What is dilation?

Dilation means changing the size of an object without changing its shape. The size of the object may be increased or decreased based on the scale factor.

Given: A triangle is dilated by a scale factor of n = 1/3. As n is less than 1 but greater than 0.

A dilation is a rigid transformation that forms an image that is the same shape as of the original figure but with a different size.  A dilation transforms a figure by scalar factor 'n' about the center of dilation is a fixed point in the plane which never changes.

A dilation that forms a larger image is known as enlargement.  A dilation that forms a smaller image is known as reduction.

• If n is greater than 1, then the image is an enlargement.

• If n is between 0 and 1, then the image is a reduction.

• If n is 1, the figure and then the image is exactly the same.

Hence the second statement is true. It is a reduction because 0 < n < 1.

To know more about Dilation follow

https://brainly.com/question/10253650

whats the answer to 98÷24

Answers

bold{Answer:}

4.083333333333333



(bold{Explanation:}
Simply divide?


Q: The ratio of the numbers of Nick's marbles to Michael's is 3:5. Nick has 36 marbles. If Nick receives
another 9 marbles, what will be the new ratio of the number of Nick's marbles to Michael's?

Answers

Answer:

[tex]\frac{3}{4}[/tex]

Step-by-step explanation:

[tex]\frac{3}{5} = \frac{36}{x}[/tex]

3x = 36 x 5

3x = 180

x = 60

Michael has 60 marbles.

Nick recieves 9 more marbles so he has 36 + 9 = 45 marbles

The new ratio will be:

[tex]\frac{45}{60}[/tex]  = [tex]\frac{3}{4}[/tex]

write the equation from each line, Plus helpp​

Answers

Answer:

the slope u find by looking for where the line hits an exact + and the y-int is where the line touches the y-axis

You roll a die repeatedly, stopping when you roll a 1. Your score is the sum of values of all your rolls. What is the expected score

Answers

Using the binomial distribution, it is found that the expected score of the game is of 21.

What is the binomial probability distribution?

It is the probability of exactly x successes on n repeated trials, with p probability of a success on each trial.

The expected number of trials until q successes is:

[tex]E_s(X) = \frac{q}{p}[/tex]

In this problem, a die has a p = 1/6 probability of resulting in a 1, hence the expected number of trials is:

[tex]E_s(X) = \frac{1}{\frac{1}{6}} = 6[/tex]

In each trial, each outcome from 1 to 6 is equally as likely, hence the expected score of a single trial is given by:

[tex]E = \frac{1 + 6}{2} = 3.5[/tex]

Then, the expected score of the six trials is:

6 x 3.5 = 21.

More can be learned about the binomial distribution at https://brainly.com/question/24863377

Pls pls pls help ill give you whatever :(

Answers

Answer:

I'm not positive but it should be 16/625

Step-by-step explanation:

if it is brainlist would be nice

A confidence interval is constructed to estimate the value of.

Answers

Mean of your estimate

I need help with two step equations

Answers

1. Add 3 to both sides, add 17 and 3 to get 20, divide both sides by -4, divide 20 by-4 to get -5.

x=-5

2. Subtract 9 from Both sides, subtract 9 from 13 to get 4, divide both sides by -2, divide 4 by -2 to get -2.

x=-2

3. Subtract 6 from both sides, subtract 6 from -64 to get -70, divide both sides by 7, divide -70 by 7 to get -10.

X=-10

A closed cylinder has how many faces ?​

Answers

Answer:

3 faces

A cylinder has 3 faces - 2 circle ones and a rectangle (if you take the top and bottom off a tin can then cut the cylinder part on the seam and flatten it out you would get a rectangle). It has 2 edges and no vertices (no corners).

Step-by-step explanation:

[tex] \huge\fbox\blue{ANSWER} [/tex]

A cylinder has 3 faces - 2 circle ones and a rectangle

A circular tablecloth has a radius of 3.7 feet. Kyle is sewing a piece of ribbon around the edge of the tablecloth. How much ribbon will Kyle need for the circumference of the tablecloth?
Use\ 3.14\ for\ \pi.\ Use 3.14 for π.

Answers

Answer:

Circumference = 23.23600 (using 3.14 instead of whole PI)

Step-by-step explanation:

GIVING BRAINLEST TO THE PERSON THAT CAN EXPLAIN HOW TO DO THIS THE BEST :)

Answers

Cut the square in half and use pythagorean thereom to solve for the long side of the triangle or it’s diameter.
a^2 + b^2 = c^2

8^2 + 8^2 = c^2
64 + 64 = c^2
128 = c^2 …square root both sides
c = 11.3137 (diameter)

radius is half diameter

r = 5.6569

Then you can subtract the area of a square a=bh from the area of the circle a = pi(r)^2.

a = (8)(8) the square’s area is 64.

a = pi (5.6569)^2
a = pi (32) the circle’s area is 32pi

so subtracting the area of the square from the circle is 32pi - 64.

Therefore it is the last selection 32pi - 64.




At his school's book fair, Tristan paid $37.70 for 5 books by his favorite author. Each book would have cost $9 if he had purchased it online instead. In all, how much more money would Tristan have paid if he had purchased the books online?

Answers

Answer:

$7.30

Step-by-step explanation:

All you have to do is 9 x 5= 45

Then 45 - 37.70= 7.30

HGD

-ghost

Tristan would have paid $7.3 more, if he had purchased the books online.

What is the unitary method?

The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.

Given that, Tristan paid $37.70 for 5 books by his favorite author.

Each book would have cost $9 if he had purchased it online instead.

Total money paid to purchase books online = 5×9

= $45

Difference in cost = 45-37.70

= $7.3

Therefore, Tristan would have paid $7.3 more, if he had purchased the books online.

To learn more about the unitary method visit:

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#SPJ2

Which function in vertex form is equivalent to f(x) = x2 x 1? f(x) = (x one-quarter) squared three-quarters f(x) = (x one-quarter) squared five-quarters f(x) = (x one-half) squared three-quarters f(x) = (x one-half) squared five-quarters

Answers

The function in vertex form is equivalent to [tex]\rm y = (x + 2/4)^2 + \frac{3}{4}[/tex].

What are quadratic equations?

A quadratic equation is an equation of degree 2 in other words.Quadratic equations have the form ax² + bx + c = 0 and are second-degree algebraic expressions.

The standard quadratic function with vertex (h, k) is ;

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

The general quadratic equation is found as;

[tex]\rm y = ax^2 + bx + c[/tex]

The value of h is given as;

[tex]\rm h = \frac{-b}{2a}[/tex]

For the given equation in the problem;

[tex]\rm y = x^2 + x + 1[/tex]

The value of the k is found by;

[tex]\rm y =( \frac{-1}{2}) ^2 - \frac{1}{2} + 1 \\\\ y= \frac{1}{4} - \frac{1}{2}+ 1 \\\\ y= \frac{1}{4}- \frac{2}{4}+ \frac{4}{4}\\\\ y= \frac{3}{4}[/tex]

So the vertex is at [tex]\frac{-2}{4}[/tex] and [tex]\frac{1}{4}[/tex]  then the vertex form is:

[tex]y = (x +\frac{2}{4} )^2 + \frac{3}{4}[/tex]

Hence the functions in vertex form are equivalent [tex]\rm y = (x + 2/4)^2 + \frac{3}{4}[/tex].

To learn more about the quadratic functions refer to the link;

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Answer: OPTION 3

Step-by-step explanation:

Mr. Jones sold two pipes at $1.20 each. Based on the cost, his profit one was 20% and his loss on the other was 20%. On the sale of the pipes, he:
(a) broke even,
(b) lost 4 cents,
(c) gained 4 cents,
(d) lost 10 cents,
(e) gained 10 cents​

Answers

given:

two pipes= $1.20

solution:

Selling price of the first pipe = $1.20

Profit = 20%

Let’s try to find the cost price of the first pipe

CP = Selling price - Profit

CP = 1.20 - 20% of CP

CP = 1.20 - 0.20CP

CP + 0.20CP = 1.20

1.20CP = 1.20

CP = 1.20/1.20

CP = $ 1

Selling price of the Second pipe = $1.20

Loss = 20%

Let’s try to find the cost price of the second pipe

CP = Selling price + Loss

CP = 1.20 + 20% of CP

CP = 1.20 + 0.20CP

CP - 0.20CP = 1.20

0.80CP = 1.20

CP = 1.20/0.80

CP = $1.50

Therefore, total cost price of the two pipes

= $1.00 + $1.50

= $2.50

And total selling price of the two pipes

= $1.20 + $1.20

= $2.40

Loss = $2.50 – $2.40 = $0.10

Therefore, Mr. Jones loss 10 cents.

answer= option d.

A waitress earned a 18% tip.What decimal is equivalent to 18%

Answers

Answer:

0.18

Step-by-step explanation:

Percentages and decimals are closely related. As a matter of fact, we don't need to use any actual math to solve this question because there is a shortcut.

Answer by Dividing

One way to solve the question is by dividing. Percentages are numbers that represent a portion of 100. So, to find the decimal form we can divide the percentage by 100.

18/100 = 0.18

Shortcut

While dividing by 100 can work, there is an easier way to find the decimal form. Dividing by 100 will always be equivalent to moving the decimal point 2 digits to the left.

This means that 18.0 becomes 0.18 when using this shortcut.

Can you help me solve this two questions please??? :(​

Answers

5/8 5/9 7/12 11/18 this is the answer enjoy your day

y
=
x

1
and
y
=

5
x

13
?

Answers

Answer:

x = -3

y = 2

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form:

(-3,2)

Equation Form:

x = -3, y = 2

A circular piece of fabric has a radius of 1. 2 ft. The fabric sells for $5. 40 per ft². What is the total cost of the circular piece of fabric? use 3. 14 for pi. $6. 48 $20. 35 $24. 42 $40. 69.

Answers

Answer:

$24.42

Step-by-step explanation:

3.14*r^2= area

3.14*1.2^2=4.52

5.40*4.52=24.42

Answer:

Step-by-step explanation:

Remark

First find the area of the circular piece of fabric. Then deal with cost per square foot.

Area of the fabric

Area =  pi * r^2

Area = 3.14 * 1.2^2

Area = 3.14 * 1.44

Area = 4.5216 square feet

Cost

1 square foot costs 5.40 dollars

4.5216 square feet costs x                   Cross multiply

x = 5.40 * 4.5216

Answerx = 24.42 dollars for the fabric bought.

Why is V10 equal to 5

Answers

Answer: Equals to 5

Because it does

Derek is hang gliding on a clear day at an altitude of a feet. His visibility, v, is 67.1 mi. Use the formula v = 1.225 to find the altitude at which Derek is hang gliding.

Answers

Step-by-step explanation:

since the equation is v = 1.225 × sqrt(a)

we can plug in the known values to find the altitude.

so:

(67.1/1.225)^2 = a

a = 3000

Base on the visibility formula v = 1.225√a, the altitude at which Dereck is hang gliding is 7.4 miles

How to find altitude using visibility formula?

The visibility formula is given as follows:

v = 1.225√a

where

a = altitudev = visibility

Therefore,

v = 67.1 miles

v = 1.225√a

67.1 = 1.225√a

divide both sides by 1.225

√a = 67.1 / 1.225

√a = 54.7755102041

square both sides

√a² = √54.7755102041

a = 7.40104789878

a = 7.4 miles

learn more on visibility here: https://brainly.com/question/16166215

What is the surface area of the prism?

Length: 15mm

Width: 3mm

Height: 4mm

Answers

Answer:

234mm

Step-by-step explanation:

13. The photo below is being enlarged to form a 24-by 30-inch print. What is the scale factor being used to enlarge it?​

Answers

Answer:

6

Step-by-step explanation:

24/4 = 6

30/5 = 6

Dividing the values of the larger print by the corresponding values of the smaller print results in a scale factor of 6

Question 1 of 5
Brad measured the heights of several wildflowers. He
found that their heights were 3, 3, 4, 4, and 6 inches.
Which statement is false?
O A. The mean of the data is 4 inches,
B. The median of the data is 4 inches.
O C. The mean of the data is 3 inches,
D. The range of the data is 3 inches.
SUBMIT
I will mark brainiestttttt answeerr

Answers

Answer:

The mean of the data is 3 inches, is false

Step-by-step explanation:

3, 3, 4, 4, and 6 inches.

To find the mean, add the numbers together and divide by the number of data points

( 3+3+4+4+6)/5 = 20/5 = 4

The median is the middle number

3, 3,    4,      4, and 6 inches.

The median is 4

The range is the largest number minus the smallest number

6-3 =3

Where to put the black point to show all the angles that are congruent to angle A

Answers

Answer:

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

Step-by-step explanation:

as I see it, A is the full 180° angle.

and so, there are 3 more 180° angles:

below A in the other side of the blue line the whole 180° arc.

above and below the blue line at the intersection point with the second, parallel red line (again, the whole 180° arcs).

Help please hurry too!!!!

Answers

Answer:

false

Step-by-step explanation:

Pls answer quick;-; 20 points!
The top and bottom lines are parallel. What is the value of x?

A. 105

B. 45

C. 100

D. 65

Answers

Answer:65

Step-by-step explanation:

Hi

It’s 65 bc 35+80= 115. And triangles are 180° so 115-180= 65.

Hope it helped

Answer:

65

Step-by-step explanation:

The value of 35 degrees can be translated from the opposite diagonal. Adding the 80 degrees and 35 degrees equals 115 degrees. Finally find the remainder 180-115= 65

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