Mathematics Middle School

plzzzzzzzzzzzzz help

Answers

Answer 1

(2m-7)(2m-7)
4m^2 - 14m - 14m + 49
4m^2 - 28m + 49

Answer 2

Answer: 4m²-28m+49

Step-by-step explanation:

(2m-7)² can be written as (2m-7)(2m-7).

You would have to multiply it out like this:

2m times 2m=4m² (2x2=4 and mxm=m²)

2m times -7=-14m (2x-7=-14 then put a m on it)

-7 times 2m=-14m

-7 times -7=49

The equation would then look like this:

4m²-14m-14m+49

Then you would have to collect like terms. Like terms are terms with the same variables and powers. It will then look like this:

4m²-28m+49

Hope this helps :)

Related Questions

What is the surface area of the solid that can be formed by this net?

Answers

Answer:

i think it would be 53 inches cubed i could be wrong i did it in my head

Answer:

I'm pretty sure the answer is 53 inches cubed.

Can someone plz help me with these 3 math questions plz and plz explain how u got the answer

Answers

Answer:

1.102.08

Step-by-step explanation:

Numbers A=1/2h(a+b) =(9.6+15.92)8÷2 =25.52×4 =102.08

The answer is 1.102.08

At the carnival, the Tea cups spin at a rate of 10 rpm. How long will it take for the Tea cups to spin 43.5 times?

A. 435 minutes
B. 44.5 minutes
C. 43.5 minutes
D. 4.35 minutes

Answers

Answer:

D. 4.35 minutes

Brainliest pls

Step-by-step explanation:

Answer is D.
Explanation- 43.5 divided by 10 is 4.35

Please help me out !

Answers

Answer:

Both -1.5 and -3/2 will be halfway between -2 and -1 on the number line. 3/2 will be halfway between 1 and 2. -4/3 will be between -1.5 and -1.

Answer:

Well I can’t really do anything, the best thing I can tell you is that for each number, look at each option and Plot it from there.

You can turn all these into decimals since the number line is a whole number line and decimals are easier to work with in this situation then fractions. So you would have

-1.5, 1.5, -1.5, and -1.33333...

So -1.5 and -3/2 are the same so thats one plot, that would go between -1 and -2.

1.5 goes between 1 and 2

And -1.333...goes more closer to -1 between -2 and -1

The area of the base of a trapezoid pyramid is (34ft squared) the pyramid is 12 inches tall. What is the volume of the pyramid

Answers

Answer:

the ft is 97.3 repeating or 1168 inches

Step-by-step explanation:

Claire has a hot tub with a diameter of 7 feet. She wants to purchase a cover to protect the hot tub. What is the area of the cover? Use Pi = 3.14 and round the answer to the nearest square foot.

_____ ft2

Answers

area = 3.14(r)^2
3.14(3.5)^2
=38.465
=38.5 (rounded)

Answer:

Pretty sure it's 38 ft^2

Step-by-step explanation:

Formula for circles=πr^2

So radius is 3.5 because radius is half the diameter

so 3.5^2=12.25

And 12.25 times 3.14 is your answer

A spinner has many equal sections of different colors. The probability that the spinner will not land on a
blue section is 34%. What is the probability that the spinner will land on a blue section?
A 34%
B 66%
C 68%
D can’t be determined

Answers

Answer:

B 66%

Step-by-step explanation:

100% (total) - 34% (P(not landing on blue)) = 66%

66 because 34% of it is blue

How long does it take an account with a principal of $600 to earn $90 in interest at a simple annual interest rate of 5%

Answers

Answer:

3 yrs

Step-by-step explanation:

1st year=600*1.05=630

2nd year=630*1.05=661.5

3rd year=661.5*1.05=794.57

Find the median of this set of data: 3, 8, 9, 2, 4, 7, 2

Answers

Answer:

Step-by-step explanation:

the midian is the middle

Given : 2, 3, 8, 9, 2, 4, 7, 2 .

To Find: Median of data .

Solution : Firstly arranging the data in ascending order we get , 2 , 2 , 3 , 4 , 7 , 8 , 9 . Here number of terms = 7 .

So the median will be the middlemost value.

Here the middle most value is 4 .

Therefore the median is 4 .

whaaa? Pirmavera, you know i don't know this, bros

Answers

The answer is B (the second choice)

I am so bad at math so i need help

Answers

a) a+b=b+a

the commutative property of whatever number is it turned around

b) a * b= b*a

the commutative property of whatever number is it turned around

c) b+0=b

the additive property is whatever adds to zero is that number.

d) b*1=b

the multiplication property of one is whatever mutilply by 1 is that number.

The guy above me is correct

Using the Pythagorean Theorem, fill in the table. [Assume a and b are the lengths of the legs and c is the length of the hypotenuse.]

A B C
25 60
[ Select ]
7
[ Select ]
25

[ Select ]
30
34

9 40

[ Select ]

Answers

Answer: It would be Second leg = 15

Step-by-step explanation:

From my understanding, you are supposed to find the second leg of the right triangle by Pythagoras theorem.

Hypotenuse: 25

One leg: 20

Second leg: x

Pythagoras theorem: hypotenuse² = adjacent² + opposite²

c² = a² + b²

25² = 20² + b²

b² = 25² - 20²

b² = 625 - 400

b² = 225

b = √225

b = 15

Therefore, the second leg of the right triangle is 15.

A train drove the distance of 440 feet in 20 seconds. Select ALL the unit rates that are equivalent to the speed of the model airplane.

Answers

Answer:

22 feet/s

Step-by-step explanation:

Answer:

Step-by-step explanation:

The units of measurement listed below are suitable:

ft/sec

ft/min

miles/hr

Weren't there more choices?

THIRD TIME ASKING PLEASE HELP ME!!!

Answers

Answer:

10 C

Step-by-step explanation:

easy put 50 for F

helppppppp its math.....

Answers

Answer:

1. X is added to 8

2. Subtract 14 by a number

3. Multiply 2 after you add 3 into a number.

4.. Twice a number plus 3

5. Divide 15 by a number

Step-by-step explanation:

Answer:

last 2

(2xn) +3

[tex]y\sqrt{15}[/tex]=x (X x Y) = 15

Step-by-step explanation:

Luisa works at a gift shop. She receives a bonus if she sells at least 20 balloon bouquets in a month. Which graph represents the number of bouquets she needs to sell to get a bonus?

Answers

Do you have an image of the graphs

Would it be a graph like this?

Use the net as an aid to compute the surface area of the triangular prism.
A) 100cm2
B) 150cm2
c) 200cm2
D)300cm2

Answers

Answer: the answer is c

Step-by-step explanation:

Because I did the test

Answer:

Hope This Helps!

(CORRECT ANSWER GETS BRAINLIEST)
According to the line graph below, what is the total number of tickets sold?A.145 B.140 C.130 D.40

Answers

Answer:

B) 140

Step-by-step explanation:

August 8: 20 tickets

August 10: 20 tickets

August 11: 25 tickets

August 12: 40 tickets

August 13: 35 tickets

Added all together, it's 140 tickets sold. So, Option B is correct.

Hope this helps! :)

Answer is (b.) 140 because 20+20+25+40+35=140

.......................

Answers

Answer:

is something supposed to be there

Step-by-step explanation:

What’s the question... so we can prices you with an answer

This diagram shows three small squares and two rectangles composed of 10 small squares.

Diagram of 3 small squares and two rectangles composed of 10 small squares.

a. Jada says this diagram can represent 230. What does a small square represent for Jada?

Answers

The small squares represent 30 (each one is equal to 10) if the 2 rows of squares represent 200, if the two rows of 10 squares only represent 20 becuase 10+10=20 then the squares equal 210 (each square equals 70)

Answer:

It is ten

Step-by-step explanation:

PLZZZZZ help with this!!

Answers

Answer:

x^2 -8x -65

Step-by-step explanation:

Answer:

x^2-8x-65

Step-by-step explanation:

FOIL it out

PLEASE HELP ME WITH THIS. THANK U.

Answers

NAJAJJHSJAHAKAKLAjJajaa

Answer:

B' is (2, 0) and C' is (7, 1)

Step-by-step explanation:

Compare A and A' and you see that you added 2 to X and 5 to Y. Now you simply apply this to B and C to find B' and C'

Help me please please I really need this

Answers

Answer:

area of triangular logo = ½ × base × height

= ½ × 8 × 11

= 22 in²

Answer:

Step-by-step explanation:

If you multiply the base times height, which would be 8 * 5 1/2, You get 44. Then multiply that by 1/2 to get the area, and you get 22.

Hope this helps!

Help ASAP! Will give brainliest!

Answers

Answer: D. 48in²

Step-by-step explanation:

[tex]A=\frac{1}{2}bh\\A=\frac{1}{2}(16)(6)\\A=48in^{2}[/tex]

help asappp WILL MARK BRANILIEST

Answers

Answer:

1)36m

2)31.6cm

3)63in

4)102ft

5) 15mm

You can checkout the explanation below⬇️:)

Step-by-step explanation:

1. Parallelogram

Given: 4 & 9

A=bh

= (4)(9)

=36m

2. Rhombus

Given: 8 & 7.9

A=(bh) ÷2

= (8*7.9)÷2

=31.6cm

3. Rhombus

A= bh

=(14*9) ÷2

=63in

4. Parallelogram

A=bh

=12*8.5

=102ft

5. Given: area= 375 base=25

height = area ÷ base

h= 375÷25

=15mm

What is the longest line segment that can be drawn in a right rectangular prism that is 12 cm long, 11 cm wide, and 7 cm tall?

Answers

Answer: 12.89 I think

Step-by-step explanation:

8 - 5b = -7 ?? whats the b

Answers

Answer:

b=3

Step-by-step explanation:

Isolate the b:

8-5b=-7Subtract 8, -5b=-15Divide by -5, b=3

Check your answer:

8-5(3)=-78-15=-7-7=-7

b=3
you subtract the 8 from the left then subtract it from the right giving you -5b=-15 then divide the -5 by both sides

3 is what percentage of 12?
I know that the answer is 25 but how do you calculate it mentally?

Answers

Answer:

In your head, you can convert the fraction 3/12 into a decimal. So divide 3 by 12 and you would get 0.25. I hope this helps :)

Step-by-step explanation:

Explain how to draw a line segment that measures 72 millimeters.

Answers

Answer:

get a ruler and meshure out 72 millimeters.

Step-by-step explanation:

did exam

Answer: I'm just gonna answer this question. Use a ruler with millimeters.

Step-by-step explanation:...yea-

PLS HELP I WILL GIVE BRAINLIEST!

Answers

B!!! i also had this question a few months ago

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