Mathematics Middle School

Which equation is true?

1. 5+0=0
2. 15x0=0
3. 1.4+2.7=4.1
4. 2/3 x 5/9 = 7/12

Answers

Answer 1
1.4+2.7=4.1 is true the others are false
Answer 2

Answer:

2, and 3

Step-by-step explanation:

equation 1 is incorrect, because (common sense)

equation 2 is correct, 15 zero times =0, because it's like it was never there.

equation 3 is correct because 1.4+2.7 is = to 4.1

equation 4 is incorrect because the answer would correctly be 10/27

Related Questions

Plz answer I need a lot of help as soon as possible.

Answers

Answer:

your answer is a i think sorry if im wrong

Step-by-step explanation:

Please answer show all your work or tell me the steps
choose any question to do or do all of them i dont care

1. The original cost of an item is $64 but you have to pay $78.08. What is the percent markup.?

2. If sales tax rate is 7% how much would you pay for an item that is $23.36

3.If the sales tax rate is 8.25% how much would you pay for an item that is $24.00

4.Original value:140 New value:98 what is the percent change

5. an item priced $30.82 is on sale for a 15% off. What is the sale price of the item

6. if the sales tax rate is 7.6%, how much will you pay on a $330 item

7. a $129 item is marked up 20% how much is the markup

8.four friends go out to eat and their meal costs $86.50. The sales tax is 6.75% and they should tip the waiter 20% how much should each person pay to the nearest cent

9.original cost: $35 new cost: $38.22
what is the percent increase

Answers

Answer: for the first one it is 22 percent

Step-by-step explanation: first I found out that 14.08 is In-between 64 and 78.08 . Then I devided 14.08 by 64 so I got 0.22 then i made that a percentage by multiplying it by 10. So the answer is 22 percent. Please mark me brainiest.

I did it on the other one but here is the full explanation

The second one is $25 because 23.36 times 7% equals 1.36 then add 23.36 and 1.36 and you get $25

HELP ASAP WILL GIVE BRAINLIEST! ANSWER ALL AND TELL ME WHAT ANSWER FOR WHAT QUESTION OR YOU WILL GET REPORTED.

Answers

Answer: 12 cm

Step-by-step explanation:

7. 3cm
8. B
9. D
10. 3.38 or 36
Sorry if they’re wrong I did it supper fast

Plz answer. What is the sum? 3x^2-2x-1/x-5 + -2x^2+x-5/x-5

Answers

Answer:

It is D, trust me because Doge said so.

Step-by-step explanation:

In 2015, a person working in the United States paid 10%income tax for income up to $9225. Income between $9226 and $37,450 was taxed at 15%.
Suppose John earns $9225. How much of his earnings does John take home after taxes?

Answers

answer:  he will take $8302.5 home with him!!

8302.5 is the answer AHHA

what is the solution for the inequality x-40>20​

Answers

X-40 remains the same

ANSWER FAST BC IM GIVING BRAINLIEST

Answers

Answer:

D

Step-by-step explanation:

Answer:

I believe the answer is 16 or D.

Step-by-step explanation:

Range is the difference between the smallest and largest number. and since the box and whisker plot is at 3 and 19, 19-3= 16.

I hope this is right, i'm sorry in advance if it's incorrect

The grid below is in the shape of a rectangle.
What is the area, in square units, of the shaded part of the rectangle?
A. 14
B. 24
C. 28
D. 48

Answers

Answer:

B. 24

Step-by-step explanation:

The shaded area of the rectangle is 24 square units. Therefore, option B is the correct answer.

What is the area of a triangle?

The area of a triangle is defined as the total space occupied by the three sides of a triangle in a 2-dimensional plane. The basic formula for the area of a triangle is equal to half the product of its base and height, i.e., A = 1/2 × b × h.

From the given figure,

Height of a triangle is 8 units and the base of the triangle is 6 units.

Here, area = 1/2 ×6×8

= 24 square units

Therefore, option B is the correct answer.

To learn more about the area of a triangle visit:

brainly.com/question/27701864.

#SPJ2

which of the following expressions is positive for any value of a: a^2+4,(a+8)^2, 5a^2+2,a+13,(a-4)^2+4,(a+10)^2-1

Answers

Answer:

I am not sure this is a real math equation

Step-by-step explanation:

There is no way to answer this. No elimination or substitution method would solve this. Sorry.

PLEASE ANSWER!!!!!!
The semicircle below has a diameter of 20. Find the area of the blue region.

Answers

Answer:

61

Step-by-step explanation:

Use the area of semicircle minus the area of the triangle. Area of the semicircle is 10^2 * pi / 2 = 50 pi, the area of the triangle is 12*16/ 2 = 96. The the area for the blue part is 50 pi - 96 = 61.07963268 or 61.

If it is helpful, plz give me Brainliest.

Answer:

50pi - 96

Step-by-step explanation:

The radius of the semicircle is 10, so the area of the entire semicircle is 1.2*10^2 pi = 50pi

The white triangle has an area of 1/2*12*16 = 96 so subtracting it shows that the blue area is 50pi-96

4. The figure shows a rectangle with a width of 6k inches. The length of the rectangle is 4 inches shorter than the width.
a.) Find the length of the rectangle in terms of k.
b.) What is the perimeter of the rectangle in terms of k?
c.) If k = 6, find the perimeter of the rectangle.

Answers

Answer:

C.

Step-by-step explanation:

sorry if its not correct but i hope it helps

Answer:

c is the correct answer

Step-by-step explanation:

which has the lowest iqr

Answers

Group A is the answer

Answer:

B Group A has the lovvest IQR

Please please find the area for this polygon!

Answers

Answer:

508

Step-by-step explanation:

28*16= 448

6*6= 36

4*6= 24

448+36+24= 508

In order to find the area of a polygon, all you have to do is follow the formula: area = 1/2 x perimeter c apothem. To sum it together, perimeter = the sum of the lengths of all the sides. So add 6, 16, 16, 6, 4, 6, 28, and 18! And then you have 100! Then multiply it by 1/2! So your answer should be 50. Please consider brainliest.

I need help with my little brothers homework?

Answers

I only did the first part but maybe later I will solve the rest too. If there are any errors but tell me so I can update the pic.
2. There is 10 different strings
3. I think you need to draw out the string lengths and then your done :)

What scale factor was applied to the first rectangle to get the resulting image?

Enter your answer as a decimal in the box.

Answers

Answer:

.2

Step-by-step explanation:

If you multiply 2.5 x .2 you get .5 meaning .2 is the scale factor

Answer: 0.2

Step-by-step explanation: All you got to do is multiply the rectangle with 2.5 by 0.2 to get the scale factor.

The problem is about the percent of students who prefer certain kinds of music. The math information given is 40% like hip hop, 5% like Baby Shark, and 100 students prefer hip hop music. I wonder how many 6th grade students there are at the school?

Answers

Answer:

250

Step-by-step explanation:

if 40% of the students are in the 100 then that means each student is 2.5%.

im not exactly sure what the question was but i think this is the answer

Is the expression 6(2d+ 4f) - 3f equivalent to the expression 8d+ 28f +4d -7f?
Explain your answer.
will give brainiest

Answers

no it isn’t equivalent
I don’t know what to say because this is hard for me

Apply the distributive property to create an equivalent expression.
6(a + 2b + 3c) =

Answers

6a+ 12b+ 18c

Hope this is correct...plz let me know
you would just multiply 6 to each number in the parentheses
Answer: 6a + 12b + 18c

Brainly plz help only three questions and don't answer for point kinda rude

Answers

Answer:

look down

Step-by-step explanation:

(8) no because 3.5*6.5=22.75 and that is over 20 square feet

(9) 34-19-7 * 17/2 = 17*17/2=144.5cm^2

(10) 4*6/2=12 so 1 can but if we are talking technical here it is 3/25

The questions are a bit broad so these might be incorrect

They say that smoking can reduce your life expectancy by 20%. If the life expectancy for a non-smoker is 90 years old, what is the life expectancy for a smoker?

Answers

The Life Expectancy for a smoker Is 40 years.

The answer is more than likely 72.

What is the lateral Surface Area rounded to the nearest hundredth?

Answers

Pretty sure it’s 109.96

Answer:

109.96

Step-by-step explanation:

I need help in a minute please

Answers

Answer:

31.4 im pretty sure

Step-by-step explanation:

I think the answer is also 31.4 am sorry if it’s wrong

ASAP
Elsa has scored 16, 29, and 21 points and her three games so far how many points does she need to score in her next game so that her average (mean) is 22 points per game.

Answers

Answer:

22

Step-by-step explanation:

her average is already 22 so she needs to score 22 points for it to stay the same

a batch of trail mix calls for 1.2 pounds of dry cereal. Migel is making 5 batches of trail mix. he already 2.2 pounds of dry cereal.how many more pounds of dry cereal does he need?
i will give brainlist

Answers

he will need 3.8 pounds more
He needs 3.8 pounds or even more

help please please please please

Answers

Answer:

H (20) = E

380

Step-by-step explanation:

So, Rana is trying to multiply her hours with her earnings to get the product, that's where the variable E is. H stands for hours, and so you will multiply it by 20 because that's how much she gets per hour.

-Junkerss

edit: yes im the original person who wrote this answer if anyone is c & p it.

I tried my best so good luck

The formula to find the surface area (S) of a rectangular prism with a length (l), a width (w) and a height (h) is:

S = 2lw + 2wh + 2lh

What is the surface area, in inches, of a rectangular prism with a length of 5, a width of 4, and a height of 6?

Answers

Answer:

148 in^3

Step-by-step explanation:

S= 2lw + 2wh + 2lh

S = (2 x 5 x 4) + (2 x 4 x 6) + (2 x 5 x 6)

S = 40 + 48 + 60

S = 148

Hope this helps

Can someone Solve this for me real quick?
-8( x + 1 ) + 2x = -32

solve for x

Answers

-8x-8+2X= -32
-6x= -32+8
-6x= -24 multiply both sides by -1
6x=24
X=4

plz help i am so busy plz plz help me

Answers

D=60
DEC=50
CER=130

(X=30)
The first is 60 ! Good luck

need help with this one

Answers

Answer:

The cost is $4.23

Step-by-step explanation:

Add $2.15 plus 0.69 plus $1.39 and you will get your anwser.

hellllllllllllllllllllllllllllllllllllllllpppppppppppppppppppp

Answers

Answer:

A) 52

Step-by-step explanation:

Each answer, when you divide, all equal to 52

I think that its equal to 52 in a
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