Mathematics Middle School

Jiro buys 2 rocks that each cost the same amount, r, and a magnifying glass
that costs $5. The total cost is $9. Model this situation with an equation and a
hanger diagram.

Pls help i will give brainly

Answers

Answer 1

Answer: 2r+5=9

2r so r+r+5=9

Jiro Buys 2 Rocks That Each Cost The Same Amount, R, And A Magnifying Glassthat Costs $5. The Total Cost

Related Questions

pls help me i dont know how to do this

Answers

Answer:

follow the steps

Step-by-step explanation:

bestie pls gift me xoxo

Which is a coefficient in the expression (3 x 5 ) + 4x

Answers

Answer:

4

Step-by-step explanation:

the coefficient is the number next to the variable. In this case, the variable is x so the number right next to x is the coefficient

The kite shown below is translated 8 units to the right and 1 unit up.


Which property will remain the same?

A.
the coordinates of the x-intercept

B.
the coordinates of the vertices

C.
the perimeter of the kite

D.
the angle between the top vertex and the origin

Answers

c is the right answer because the shape did not get bigger or small it just moved

Answer:

C. The perimeter of the kite

Step-by-step explanation:

Answer A is not correct because if the kite moves both right and up, the x and y coordinates will change

Answer B is the same as answer A. The kite moved so the coordinates will change.

Answer D is also the same. If the kite moves both on the x and y axis, any angle and distance will change.

Answer C is correct. Since C does not rely on the coordinates, it will always be the same. The position of a shape does not change it´s perimeter.

A student is studying a digital diagram of a fish. The diagram shows that the fish has a cartilaginous skeleton, a jaw, scales, and a backbone.

Which fish is the student most likely studying?

o a skate because it has a cartilaginous skeleton and a jaw
o a salmon because it has scales and a backbone
o a ray because it has a jaw and a backbone
o a seahorse because it has a cartilaginous skeleton and scales

Answers

Answer:

a ray because it has a jaw and a backbone :)

Step-by-step explanation:

Answer:

ray because it has a jaw and back bone

Step-by-step explanation:

Is this a function? explain

Answers

Answer:

Yes this is a function.

Step-by-step explanation:

This graph is a function because it passes the vertical line test. The vertical line test ensures that no x value has more than one y value. You can take a pencil, hold it vertically, and move it horizontally across your paper to test whether or not the graph contains multiple y values for a single x value. If it passes this test, then the graph is indeed a function.

Maya uses blue and orange fabric to make identical wall decorations. The graph below shows the relationship between the amounts of blue and orange fabrics used.

Answers

Answer: 3/7

Step-by-step explanation:

im not sure but i thinks its 3/7

∠y =
plzz help due today!!

Answers

Answer:

y = 60

Step-by-step explanation:

All triangle angles add up to 180 so:

y + y + y = 180

3y = 180

y = 60

Answer:

y=60

Step-by-step explanation:

this is something to remember

when the angles of a triangle are all the same, they are 60°

plz help if you can do all that would be great the one that starts with a -3 and then 0 its done

Answers

Answer:

so in the first box next to -3 it would be -8

the next box would be 1

and the last one would be 7

then the other table the first box would be 1

then the second would be -2

and the last would be -6

and I hope you know how to graph

PLZ NO LINKS!!!!
A rectangle has sides that are 10 m, 10m, 5m, and 5 m. What is the rectangle’s length?
5m
20 m
10 m
30 m

Answers

The way the question is worded is a little confusing.

I think I would say 10m. It could be 5m, but usually they list length first, then width. The perimeter, the whole distance around the outside, is 30 m (10 + 10 + 5 +5)

The length of the rectangle will be 10 m.

What is a rectangle?

A rectangle is a two-dimensional shape (2D shape) in which the opposite sides are parallel and equal to each other and all four angles are right angles.

Given that, a rectangle has sides that are 10 m, 10 m, 5 m, and 5 m.

We need to find the length of the rectangle,

We have the dimensions 5 m x 10 m,

Lengths in a rectangle tells that how much the rectangle is long and the width tells how much the width tells about the breadth of the rectangle,

So, we can say that,

Length = 10 m

Width = 5 m

Hence, the length of the rectangle is 10 m.

Learn more about rectangle click;

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I dont know the answer and this is my last question, only answer if you know it. ​

Answers

Answer:

2nd one

Step-by-step explanation:

Hope this helps! Good Luck!

The correct answer for this problem is answer 2

please please please pleaseee help

Answers

5/8 * 5 because there is 5/8, 5 times

Answer:

D.

Step-by-step explanation:

As you can see, there is a total of 8 slices, and 5 are shaded. So, you know that it is 5/8. As you can also see, there is 5 of these. So, you would have 5/8 5 times, or:

5/8 x 5

Hope this helps!

Simplify the expression using positive exponents.

5^9 ⋅ 5^3

Answers

Answer:

244140625 or 5^12

Step-by-step explanation:

When it comes to multiplication, you add exponents IF the base (the 5 at the bottom is called base) is the same answer. for example: 1^16 x 1^9, since the exponents are the same you just add the exponents (16 & 9) which is 25 or 1^25

Dividing is the same as multiplying except your subtracting with the examples, adding and subtracting is simplifying and solving, for example

14^2 + 13^3

          14 * 14 = 196

                   13*13*13 =2,197

          196+2,197 = 2,393

Same thing for subtraction

13^3 - 14^2

2,197 - 196 = 2,001

Hope this helps

~R3V0

While walking to the gym, Marie decides to play a game using a her lucky fair
six-sided die (which she carries with her all the time). Tossing an even number would
indicate walking forward that many steps and, likewise, tossing an odd number would
mean walking backwards that many steps (i.e. if she tosses a 3, she walks backward 3
steps). If the probability that after 2 rolls of the die, she is further away from the gym
that she was at the beginning of the game, can be represented as m/n
for m and n being relatively prime positive integers, find m^2 + n^2 ?

Answers

Answer:

i think that every time she rolls the dice, she is further away from the gym

Step-by-step explanation:

The data shows the survey results of 75 randomly selected students.

Student Travel Over Spring Break

Travel Plans

Number of Students

Not traveling

34

Traveling by plane

10

Traveling by train

6

Traveling by car

23

Traveling by bus

2













The school has 300 students total. Based on the results of the poll, how many of the school’s students should be expected to travel by plane over spring break?

A.
60

B.
50

C.
30

D.
40

Answers

D - 40

Explanation:

75 goes into 300 four times, so therefore 10 (number of students travelling by plane out of 75) multiplied by 4 is 40.

300/75 = 4x10= 40
D.40 because it makes more sense

Find the CIRCUMFERENCE of a circle with a DIAMETER of 53.5 miles. Use 3.14 for the value of pi.

Answers

Answer:

Step-by-step explanation:

Hello!

2 π r

r = 53,5/2 =>26,75 miles

2* 3,14 * 26,75 =>167,99 miles

(Diameter) x (Pi) = (Circumference)53.5 miles x 3.14 = 167.99 miles

Here is an expression 3.2 evaluate the expression when t is 4 middle school math

Answers

Answer: Answer: C. 3.2 × 10^4

Step-by-step explanation: for this case the multiplication of the values with exponent are summed, as the exponent are the 6 and -3

6 - 3 = 3

this will be the exponent of the common value which is the 10.

after you only need to multiply 8 and 4 by separate the

8 * 4 = 32.

then we only need to place the values one by one

32 × 10^3

3 is the result of the sum of the exponent.

10 is the common value.

32 is the result of the product.

if we add another zero to the multiplication we get 3.2 and exponent finish with one more zero, then we get this result

3.2 × 10^4

because of that the C is the correct answer, keep in mind that the other answers do not apply correctly the rule of the exponent, because the rest of answer give us wrong answer with final result of the exponent.

Multiply 5,5,5,5 4 times which gives me 625
72 times 3=216+7=223
The slope of the equation is y=-6-2
34+81=115
C decreased over 5 years should company use
124 c
D rotation 90 degrees counterclockwise followed by reflection across the x-axis
C 8cm,15cm,40cm
B A’(16,32),(48,32),(64,80)
how which one is it

Answers

Answer:

Confusion

Step-by-step explanation:

what the heck are you asking?

Answer:

b

Step-by-step explanation:

Which of the following allows you to compare the frequency of intervals, but not the frequency of exact values?
A.a dot plot
B.a stem-and-leaf plot
C.a histogram
D.a circle graph

Answers

The correct answer is letter B

The type of graph that allows you to compare the frequency of intervals, but not the frequency of exact values is a stem-and-leaf plot.

What is a Histogram?

An histogram is a graphical representation of a data distribution, which uses bars or bins to represent the frequency of the data distribution that are in intervals.

Similarly, in dot plot the total number of dots tells us the total number of observations of the values of that thing we did.

The Stem and leaf plot is to show the data distribution while retaining its uniqueness which shows the raw values by retaining the original data,

The type of graph that allows you to compare the frequency of intervals, but not the frequency of exact values is a stem-and-leaf plot.

Therefore, the graph used to show data in intervals is: B.a stem-and-leaf plot

Learn more about histogram on:

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Note: A maximum number of 4 points are available for this question. Part A is worth 1 point. Part B is worth 1 point. Part C is worth 2 points.

Brian received 45 trading cards from his mother and 25 trading cards from his uncle to start a collection.

Each week, Brian uses his allowance to buy a new pack of 15 trading cards to add to his collection.

The number of cards in Brian's collection can be represented by a linear function. Identify the rate of change and initial value of this function. Explain what these values represent in terms of the situation.

Answers

Answer:

answer:55 because he started of at 45+25=70 then -15=55 so it basically can be used with parenthesis,cif this helped subscribe to amiredagoat Yt

Step-by-step explanation:

Two sides of a triangular tile measure 4 inches and 6 inches. The length of the third side is either 7 inches or 10 inches. Which lengthis the correct length for the third side?
A.) 7in
B.) 10in

Answers

I think it would be 10 in
The answer would be 10 if you need to know why tell me

Can anyone help me with this please? It's the system of equations and I'm stuck...

Answers

Answer: 5(0)=0
Answer: 4(-5)= -20

You can also use this app “photomath” to get the answers

Which statement is true?

Answers

Answer:

c ???

Step-by-step explanation:

The answer should be c

PLEASE HELP WILL GIVE BRAINLIEST

Answers

DONT CLICK THE LINK FROM THE OTHER GUY WHO ANSWERED ITS A SCAM

Find the perimeter of the figure. Round your answer to the nearest hundredth.

Answers

Answer:

40.56 in.

Step-by-step explanation:

8 × 3.14 × 1/2 = 12.56 (perimeter for the half circle)

12.56 + 10 + 8 + 10 = 40.56

Answer:

Perimeter = 40.56 inches

Explanation:

The perimeter of a shape is all side lengths added up, so, we know there are sides with the lengths 10 inches, 10 inches, 8 inches, and a semicircle.

To find the perimeter of a semicircle, the formula is

C = πd/2, circumference equals pi times diameter divided by 2 OR C = πr, circumference equals pi times radius.

The diameter is 8, so, filling out the formula, it's

C = 3.14 x 8 /2

C = 25.13/2

C = 12.56

So, adding all the sides up, it's 10 in. + 10 in. + 8 in. + 12.56 in.

Therefore, the answer/perimeter/circumference is 40.56 inches.

This is my second answer so far, I hope it helped!

A cone has a volume of 263.76 cubic yards and a height of 7 yards. What is its radius?
Use a ~ 3.14 and round your answer to the nearest hundredth.

Answers

Answer:

6

Step-by-step explanation:

hmmm maybe Try six darling

HELLLPP PLEASE! Thank you!!

Answers

I think the answer is b

I think the correct answer is A (14.0)


because 2.5•1 =2.5
then if you divide 35 by 2.5 you get 14.
I could be wrong and if I am I’m sorry.

Explain how you can use a number line to find the sum of -8.3 + 10.5

Answers

Answer:

don't search link

Step-by-step explanation:

You go forward to 10.5 and then move backwards 8.3 numbers (sorry I’m so terrible at explaining)

sandra calculated the trend line for a scatter plot to b y=3x+1-. What is the predicted value of x=40?
a. 80
b. 125
c. 130
d. 53

Answers

sandra calculated the trend line for a scatter plot to by=3x+1-. What is the predicted value of x=40?

A.80
B.125
C.130
D.53

The predicted value of the scatter plot at x=40, according to Sandra's trend line prediction will be 130.

What is a scatter plot?

A scatter plot is a form of plot or mathematical diagram that displays values for two variables for a collection of data using Cartesian coordinates. One more variable can be presented if the points are programmed.

To get the predicted value to the scatter plot at x=40, substitute the value of x as 40 in the given function of the trend line. Therefore, the value will be,

[tex]y = 3x+10\\\\y = 3(40)+10\\\\y=130[/tex]

Hence, the predicted value of the scatter plot at x=40, according to Sandra's trend line prediction will be 130.

Learn more about Scatter Plot:

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A radio disc jockey has 8 songs on this upcoming hour's playlist: 4 are rock songs, 2 are reggae songs, and 2 are country songs. The disc jockey randomly chooses the first song and the second is a reggae song? Write your answer as a fraction in simplest form.

Answers

Answer:

16/32

Step-by-step explanation:

The answer would be: 16/32

4x − 30 = ≤12 solve the inequality.

Answers

Answer:

4x − 30 = ≤12

Step-by-step explanation:

4x − 30 = ≤12

+30 on both sides

4x≤42

divided by 4 on both sides

x≤10.5

the answer is x≤10.5
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Can Someone please help me Read the passage from "Carrots with Character, which is an informational text about the health benefits of genetically modified carrots.The researchers, led by plant geneticist Philipp Simon, haven't limited themselves to the color orange. They've selectively bred a rainbow of carrotspurple, red, yellow, even white. Scientists are learning that these plant pigments perform a range of protective duties in the human bodywhich is not surprising, says Simon, since many of the pigments serve to shield plant cells during photosynthesis. Red carrots derive their color mainly from lycopene, a type of carotene believed to guard against heart disease and some cancers. Yellow carrots accumulate xanthophylls, pigments similar to beta-carotene that support good eye health. Purple carrots possess an entirely different class of pigmentsanthocyaninswhich act as powerful antioxidants.While colored carrots are unusual, they're not exactly new. 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