Mathematics Middle School

Which expressions are quadratic expressions? Check all that apply.

z2
2x + 7x – 10
2x2 + 9x – 7
500(0.25)t – 1
13x3 + 21x2 – 5

Answers

Answer 1

Answer:

2x + 7x – 10

2x2 + 9x – 7

Step-by-step explanation:

Related Questions

helpppp

anyone!? :<
___________________________________________________
1. Write the multiplication sentence modelled by the shaded region in each rectangle.
|A. | B. |C. |D.
______________________________________

3. Tom took of a pie. He could only eat of what he took.
What fraction of the pie did Tom eat?

''Hint: 1/2 of 3/4 is 1/2 x 3/4.''
___________________________________________________

PLZZZ DO BOTH!! :( ITS DUE TW

Answers

Answer:

First page;

a. 2/3x1/2=1/6

b. 1/4x2/5=2/20

c. 1/3x1/3=1/9

d. 1/2x5/6=5/12

Second Page:

a. 1/4x3/4=3/16

b. 1/2x2/3=2/6

Step-by-step explanation:

Hope this helps :) have a good day or night!!!!

Alana's hair grew 2 inches in 5 months, how many inches will her hair grow in 1 year?

Answers

4.8 inches in one year

Answer: 4

Step-by-step explanation:

First, get 2 and 5 together 2/5 ad than 1 year is 2 of the 5 months so that is 10 so your equation should look like 2/5 = i/10 then cross multiply 2x10=20 5xi = 5i now your equation looks like 5i = 20 divide 5 on both sides and your answer is i = 4.

Write an integer to represent each situation:
Jillian deposited $47 he received for his birthday

Answers

I think the answer would be -47$
the answer to ur question is -47

Who ever answers first gets a brainliest A rectangular prism is 14 feet long and 10 feet high. Its volume is 1,680 cubic feet. What is the width of the rectangular prism?

Answers

Answer:

The width is 12 feet.

Step-by-step explanation:

If you divide 1,680 by 14 it will give you 120 then divide that by 10 it will give you 12 ft.

what is the mean of 5 7 7 5 1 0 6 8 5 9 8

11 points

Answers

Answer:

add all the numbers and divide then by how many numbers there are in the data.

Step-by-step explanation:

5+7+7+5+1+0+6+8+5+9+8=61

how many numbers are in the data? 11

divide 11 and 61.

61/11=5.54

mean=5.54 (54 repeats. 5.5454545454545 etc.)

5.54 you add up all the numbers and than divide by how many there are!!!

Which number is an irrational number?

A. √100

B. 1/8

C. --2.2675

D. 3√16

Answers

the answer is d. it isn’t an exact number

Answer:

D, 3√16

Step-by-step explanation:

Got a 100%

If angle A measures 40° what is the measure of angle B?

Answers

the cap is at 360*

so you can find the difference

360 - 40.

and the solution should get you the answer which is 320*
The answer would be 320 degree angle

Is this supplementary, Complementary, a vertical angle, or none of the the above?

Answers

Answer:

Supplementary Angle

Step-by-step explanation:

If you add the angles "a" and "b" together you get an angle of 180º.

A supplementary angle is an angle that adds up to 180º.

A complementary angle is an angle that adds up to 90º.

A vertical angle has two lines that intersect (like an "X".

In a magic square, the sum of the numbers in any row, column, or diagonal is the same. The square below is a magic square. Two of the numbers were taken out and three were covered by the letters A, B, and C. What is the value of A + B + C?


a.14
b.25
c.Impossible to tell
d.41
e.30

Answers

answer: c
hope this helps you out & i’m not 100% sure if this is right so sorry if u get it wrong .

See attachment for question, please help asap

Answers

Answer:

7/256

Step-by-step explanation:

an = a1 * (1/2)^n-1

a9 = 7(1/2)^9-1

a9 = 7(1/2)^8

a9 = 7/256

Plz help me i will give you brainliest

Answers

Answer:

#2 10 bags

#3 0.882

#4 0.952

Step-by-step explanation:

The person above is correct

Please help me this due at 150

Answers

The answer is B. Because the number would be in between

Help, the pic is below thanks.

Answers

I was gonna answer it but I really don’t understand it so sorry

Which list could represent the four angle measures of a quadrilateral if one angle measures 125°?

A. 10°, 10°, 125°, 125°
B. 15°, 15°, 25°, 125°
C. 15°, 15°, 115, 125°
D. 55°, 55°, 125°, 125°

Answers

Answer: D

Step-by-step explanation:

The sum of the interior angles of a quadrilateral is 360°.

55+55+125+125=360

Answer:

D. 55, 55, 125, 125

Step-by-step explanation:

To solve this problem we first need to know what the total degrees of a 4 angle quadrilateral is. The answer to this is 360°. Knowing this, we need to figure out which combination of numbers adds up to 360. To do this, I go through the list and check all of the options.

A.) 10+10+125+125=270

B.) 15+15+25+125=180

C.) 15+15+115+125=270

D.) 55+55+125+125=360

(95+78+89+98)÷4=90 written in a inequality equation

Answers

Answer:

90 ≥ (95+78+89+98) ÷ 4

Step-by-step explanation:

It shows that to get 90, it has to be greater than or equal to (95+78+89+98) ÷ 4

11. What number is NOT between 1.5 and 1.75?
a. 1 1/4
b. 1.73
c. 1.62
d. 1 13/25

Answers

Answer:

A

Step-by-step explanation:

Cheryl has a 14-foot pole that she wants to cut into 4 equal pieces to help support her tomato plants.
How long should she cut each piece?

Things to mark:
A. 3.4 ft
B. 3.5 ft
C. 4.4 ft
D. 4.5 ft

Answers

B 3.5 divide 14 and 4 to get 3.5.
The answer would be B. 3.5 ft

if i tossed a coin two times and the results are heads and heads. What is the probability in fraction form?

Answers

Answer:

Hshhsbsbzbzbxbdbdbddns

Mr. Salazar assigns the same number of homework questions each school day. The ratio table below shows the total number of homework questions assigned after a certain number of school days.
Homework
Number of days
Total number of questions
4
20
8
40
11
55
16
?

After 14 days, how many total homework questions have been assigned?
60
80
95
115

Answers

Answer: 80

Step-by-step explanation:

Looking at the ratios in the table, the number of days to number of questions is 1:5 (4x5=20; 8x5=40;11x5=55). So for 16 days it will be 16x5=80

I agree that the answer is 80

Pls help last question lol

Answers

You add up all the sides, which you get 22 fir your answer

can someone help?
(no files or links)
(Will give brainliest)

Answers

1 3/4 because it you add it you will get that that’s the answer
2 1/3+1 3/4+ x= 6 3/4. 2 2/3 is the answer.

The difference between the two roots of the equation 3r2+10x+c=0 is 4 2/3. Find the solutions for the equation.

Answers

Answer:

4 2/3 positive and negative

Step-by-step explanation:

I need help!!
Determine if these questions are valid conclusions for sampling or if their invalid. (why or why not)

Answers

Answer:

1st is valid 2nd is not valid

Step-by-step explanation:

George decided to paint a wall with two windows. Both windows are 3 1/2 ft by 4 1/2 ft rectangles. Find the area the paint needs to cover.


Area of 2 windows:


Area of the entire wall:


Area to be painted:

Answers

71.5 ft , 3.5*4.5*2= 31.5(two windows) and the area of the whole wall is 103ft just subtract both to get 71.5ft needs to cover with paint.

pls help due in 10 mins

Answers

Answer:

D. 351

Step-by-step explanation:

multiply the side lengths, 24 x 9 = 216

9 x 15 =135

A mint produces 150,000 souvenir coins each year. In a random sample of 400 coins, 3 have a misprint. Predict the number of coins that will have misprints in a year.

Answers

150,000 / 400 = 375. 375(3)= 1,125 misprints per year. hope this helps!

Find the missing angle in a triangle with the given sides.

Answers

Answer: 72 degree

Step-by-step explanation:

By Angle Sum Property,

53 + 100 + angle C = 180

153 + angle C = 180

angle C = 180 - 153

       =    72 degree

Hope it helped u,

pls mark as the brainliest        - Ayaan707 for help -

^_^

Answer: 27

Step-by-step explanation:

The full triangle has to equal 180

Im still not sure, can someone help me?

(I will give brainliest)
(NO LINKS OR FILES)

Please!

Answers

Answer: 9 associate property 8 commutative property

Step-by-step explanation:

See attachment for questions.

Answers

The solution is attached. I hope it helps

The cost to hire a plumber for x hours is shown on the graph. For this graph, what does the y-intercept of the line of best fit mean in terms of the context?

Answers

The y-intercept represents the flat charge to hire the plumber

Explanation: The y-intercept is 0 hour, which can represent flat charge

Answer:

.

Step-by-step explanation:

Other Questions
Hey! Please help me with this kahn questionthanks! Can someone plz help me on this plz plz no links please I NEED HELP ON THIS GEOMETRY QUESTION!!! It has often been said that one should refrain from the judgment of others, and I think that this is apt. However, there are some sircumstances where a person must discriminate.Which word from the above passage is misspelled?A)refrainB)judgmentEliminateC)discriminateD)sircumstances find the value of x20x6=19 The change in position of the ball during each play of a football game is measured in yards. Use the information below to answer questions 2-4, What integer best represents a gain of 5 yards? The ages of a group of randomly selected adult females have a standard deviation of years. Assume that the ages of female statistics students have less variation than ages of females in the general population, so let years for the sample size calculation. How many female statistics student ages must be obtained in order to estimate the mean age of all female statistics students help me with my last question please Select the correct answer from each drop-down menu.Complete the sentences to identify the types of research sources Sofia should use.Sofa works at the city manager's office. She's conducting research on the benefits of providing free, citywide wireless internet access forall citizens. As a primary source of research, she should useShe should also look upas a secondary source for her research.ResetNext Excerpt from The Care and Keeping of Big Cats Part BKate McConnaughey(11) If you let closely related cats have offspring together, their young would be considered inbred, which means they don'thave a healthy mix of different backgrounds in their physical makeup,Look at the underlined section marked (11). Choose the answer that best corrects this sentence, if appropriate.A)Correct as is.B)If you let closely related cats have offspring together, their young wouldbe considered inbred, which means they don't have a healthy mix ofdifferent backgrounds in their physical makeup that makes them up.If you let closely related cats have offspring together, their young wouldbe considered inbred, which means they don't have a healthy mix ofdifferent backgrounds in their physical makeup which makes them whothey are.If you let closely related cats have offspring together, their young wouldbe considered inbred, which means they don't have a healthy mix ofdifferent backgrounds in their physical makeup that characterizes whatthey are and will be.D)EliminateNo What is the purpose of the columns titled "Go," "Slow," and "Whoa" in "U R What U Eat"?to explain the levels of fat, sugar, and calories in foodto explain which specific foods belong in the four basic food groups.to show which foods to eat the most of and those that are not as healthyto show which foods to never eat because they are unhealthy factor completely; 3x^2 - 28x + 49 I what is the area of this rectangle Hi, can you please check my answers? pls answer this real answers if its right ill give brainliest The hot tub is shaped like a rectangular prism. It is 7 feet long, 3 1/4 feet deep, and has a volume of 159 1/4 cubic feet. What is the width of the hot tub? HELPPPPPPPPPPPP MEHHHHHHHHHHHHHHHHHHHHHHHHH PLZZZZZZZZZZZZZZZZ GRADES GO OUT TOMMORROW AND I NEED THIS SO I CAN GET MY GRADE UP FROM A D+ PLZZZZZZZZ MY PARENTS WILL MURDER ME Republican is to conservative, as __________ is to liberal.A. IndependentB.GreenC. Democrat Describe the molecular structure of the three main types of lipidsBrainliest!!!!! 1.19x10^-7 in standard notation