Mathematics Middle School

Solve the following equation when a = 3 and b = 2.
5a^2 − 10b + 9b =

Answers

Answer 1
The answer for this problem is 43
Answer 2
5(3)^2-10(2)+9(2)
15^2-20+18
225-20+18
=223

Related Questions

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

Answers

Answer:

The probability of getting two heads on two coin tosses is 0.5 x 0.5 or 0.25.

(The probability of getting heads on the toss of a coin is 0.5)

Step-by-step explanation:

The Product Rule is evident from the visual representation of all possible outcomes of tossing two coins.

0.5 or 1/2! hope this helped

I don't get it.... I checked my book for the answers and it shows usless info

Answers

Answer:

x= 22.6

Step-by-step explanation:

This little red square means that is a right angle (90 degrees)  

x is the complementary of 67.4  (Both add to 90)

90-67.4 = 22.6

that type of corner angle is a 90° angle, so since you know the first half of the 90° angle which is 67.4 all you need to do is subtract

so you get
90 - 67.4 = 22.6

What is the scale factor of the dilation?

Is the dilation an enlargement or a reduction?

Answers

Answers:

Scale Factor = 3/4

This is a reduction

======================================================

Explanation:

Let's focus on the point R(4,4). That's the preimage point for the image of R ' (3,3).

Let k be the scale factor. We multiply this value of k by the x,y coordinates of point R to jump to R '

we have x = 4 jump to 4k which is the x coordinate of point R'

So we set 4k equal to 3 and solve for k to get k = 3/4. The scale factor is 3/4 or 0.75

We have a reduction since the image triangle T'R'S' is smaller compared to the preimage triangle TRS. We can see that we have a reduction by looking at the scale factor. If 0 < k < 1, then we have a reduction. If k > 1, then we have an enlargement instead. So we go with the first option since 0 < 3/4 < 1 or you could say 0 < 0.75 < 1.

Answer:

A reduction (think shrinking) is a dilation that creates a smaller image, and an enlargement is a dilation that creates a larger image

Step-by-step explanation:

in a coordinate plane what is the difference between (-3 1/2, 4) and (2 1/2)?​

Answers

Answer:

?

Step-by-step explanation:

By difference I think you mean how far away from? I don't really know what you mean by this but I will try to help.

1/2-4=-3 1/2

2-(-3 1/2)=5 1/2

-3 1/2

5 1/2

Above is a fraction.

I hope that I helped. Sorry if it wasn't the answer you were looking for.

Please answer! Multiple choice accepted

Answers

B is an answer for sure. I seen that it says multiple answers accepted but not necessary?
The answer is b :)) hope this helps

how can i not fall asleep with only sleeping 2 hours of sleep last?

Answers

Answer: try an energy drink such as Red Bull or coffee. You should take a nap though when u can :)

What is the measure of ∠FGC?

Answers

Answer:

I think its 30 degrees

Step-by-step explanation:

because it's look like ABE, if you were to fold it in half it would look the same

find the surface area of this triangular prism. be sure to include the correct unit in your answer. please helppp, thank youu!

Answers

I got 226.79. You could round the answer if necessary.

I need help on this darn dang question "The streets of Millston are laid out like a grid, with each square being the same size. The distance from the movie theater to a restaurant is 1/2 mile along Cabot Street. If there are Exactly 4 blocks between the two locations, how long is each block?"

Answers

Answer:

Each block is 1/8 of a mile long.

Step-by-step explanation:

i believe it will be 1/8

Higher Order Thinking A customer at a clothing store is buying a pair of pants and a shirt. The customer can choose between a sale that offers a discount on pants, or a coupon for a discount on the entire purchase. Let n represent the original price of the pants and s represent the price of the shirt. a. Write two expressions that represent the "15% off sale on all pants" option. b. Write two expressions that represent the "10% off her entire purchase" option. c. If the original cost of the pants is $25 and the shirt is $10, which option should the customer choose? Explain

Answers

Answer:

do you still need an answer?

Step-by-step explanation:

?

Ophelia keeps flour in a cylindrical canister. The capacity of the full canister is 75.36 in^3..When it is filled halfway the flour reaches a height of 3 in. What is the diameter of the canister?

Answers

Answer:

4 (rounded to the nearest whole number)

Step-by-step explanation:

total height = 3 x 2 = 6

Volume = radius^2 * pi * height

75.36= radius^2 * pi * 6

75.36/pi = radius^2 * 6  

23,987833 = radius^2 * 6

23,987833/6 = radius^2

3,997972 = radius^2

radius = 1,999493

diameter = radius x 2 = 1,999493 x 2 = 3,998986

Can someone help me please

Answers

Answer:

R= C x 2 - 5

C= R/2

Step-by-step explanation:

the answer is r - 5 > 72

Can someone give me a small lesson on nets and surface areas??

Thank you if you can. I really don’t understand.

Answers

Hi!

Here is the definition of a net from www.icoachmath.com:

“Net is a two-dimensional pattern of a three-dimensional figure that can be folded to form the figure. In other words, net is a flattened three-dimensional figure which can be turned into the solid by folding it.”

In the photo is an example of a net of a rectangular prism.

Surface area is the measure of the total area of the surface of a 3D object. For example, if I have a cube, the surface area would be the area of the outside of the cube.

Hope this helped,

Caroline

a net is just the sides of a 3d shape ‘unfolded’.

In what periods are the lanthanides and actinides? Where are they
placed in the periodic table? Why?

Answers

Lanthanides are in period 6 and actinides are in period 7. They are at the down part of the page so that the periodic table can fit on the page.

Answer: They are palced in 6th and 7th period below the periodic table due to their properties and to keep the balanced shape of periodic table.

Find x. (Finding an angle measure given extended triangles) Please helpppppp

Answers

Answer:

39

here the answer

39 is x of this angle measure given

Tell me everything I need to know and please work out the problems

Answers

1. when r = 0,
the expression becomes (5(0)+ 1/5)^2
= (0+1/5)^2
= 1/5^2
=1/25

2. divide the number of people by 80
saturday: 1210/80
= 15.125
= 15 as you can’t have 0.125 gift cards
sunday: 1814/80
= 22.675
= 22 - same logic as saturday

please help me with this math

Answers

Answer:

i think is correct

Step-by-step explanation:

you need connect figure.

you need to connect the figure then youll have the answer

can someone help me ?

Answers

Alright so A triangles perimeter is always going to be 90°

So for #1 You would add 18+24= 42 then subtract 42 from 90. 90-42=48. So for the first equation the side would be 48ft.

And for #2 You add 41+40= 81 then subtract 81 from 90 90-81=9 so the answer to the second equation would be 9 ft.

Hope this helps! :)

Answer:

Step-by-step explanation:

a² + b² = c² (pythagorean theorem formula)

let's take 18 as a and 24 as b

So, you'll write it as

18² + 24² = c²

324 +  576 = 900²

c² =810000

c= [tex]\sqrt810000[/tex] = 900

c=900ft

the sides of a rectangle are in the ratio 2:5. if the longer side of the rectangle is 25.5 in., what are it's width, perimeter, and area ?

Answers

Answer: The width of the rectangle is 10.2 inches, the perimeter is 71.4 inches,  the area is 260.1 inches.

Step-by-step explanation:

25.5/5=5.1

5.1*2=10.2

The width is 10.2 inches

25.5*2+10.2*2=71.4

The perimeter is 71.4 inches

20.5*10.2=260.1

The area is 260.1

Width=10.2 in. Perimeter=71.4 in. Area=and 260.1 in.

Step-by-step explanation:

hope it helps

Hazel has 1 3\4 cups of rice. It takes 1 \8cup of rice to make one cup of chicken and rice soup. How many cups of chicken and rice soup can Hazel make if she uses all of her rice?

Answers

Answer: 3 1/8
Explanation: you do 13/4 - 1/8= 3 1/9
I think the answer is 3 1/8 ---> emphasis on the I tHiNk :^

helppppppppp :pppppppp

Answers

Answer:

2

Step-by-step explanation:

1/2n + 2 = 6

1/2n = 4

n = 2

Answer:

n=8

Step-by-step explanation:

I need help on this also could I get an explanation on how you solved it? Please don't take my points ill get u banned. :P

Answers

Answer:

1/2

Step-by-step explanation:

4 is the total right and 5/7 make it half so it will be 1/2. hope this helps!

1/16
Hope this helps, have a good day
^^

Solve the x
-9 (1/2x - 3) = 45

Answers

Answer:

=

−

3

6

7

Step-by-step explanation:

Answer:

x = -4

Step-by-step explanation:

-9 (1/2x - 3) = 45

Divide both sides by -9

1/2x - 3 = -5

Add 3 to both sides

1/2x = -2

multiply both sides by 2

x = -4

Please if you do both I will give brainiest (to the first one to answer)

Answers

Answer:

Answer to first:

Yes, x is a rational number.Yes, y is a rational number.Y is larger

Answer to second:

I know that -3.4 is a rational number because it is an integer or decimal not equal to zero.

Step-by-step explanation:

Explanations to first:

0.147 is rational because you can write it out.0.147 bar is rational because it can be written as a fraction.Y is larger because the numbers keep repeating, so it has a larger value than 0.147.

Write an equation that you can use to solve for the height of the triangle (x). Notice that the perimeter is 48 feet.

A. 48 = 12 + 20 + x
B. 48 = 12(x)/2
C. 48 = 12(x) (20)
D. 48 = 12 + 20 - x

Answers

The answer is A.48=12+20+x
A IS answer 48 = 12 + 20 + x

Tuesday’s high temperature was 4 degrees less than Monday’s high temperature.

Answers

Answer:

Explanation:

just find out the temperature of Monday and then take away 4 from it

Find the area of the circle. Round your answer to the nearest hundredth. 15 in.

Answers

well nearest hundredth is 3

The answer is 94.2
If you multiply 3.14 by 15 then multiply that result by 2, you get 94.2.
I hope this helps

What is the median of these numbers :
65,56,76,65,52,89,41

Answers

Answer:

65

Step-by-step explanation:

You find the one equally in the center of the numbers after they are in order.

65 is the answer of the median n don’t know what else to right cause I need answers too

What is the equation of the line in slope-intercept form? (5 points)

Question 5 options:
1)
y = 36x − 3
2)
y = −3x + 36
3)
y = −3x + 12
4)
y = −12x + 3

Answers

Answer:

1) look at the picture

2) look at the picture

3) look at the picture

4) look at the picture

Step-by-step explanation: Hope this help :D

Answer:

y=-3x+36

Step-by-step explanation:

because the line crosses the y axis at 36

Given the area model of the right triangle below, what is the missing area?

Answers

Answer:

Use the pythagorean theorem

Step-by-step explanation:

25 use the equation a=sqrt of c^2 - b^2 so you would have 169-144 sqrt that and then multiple 5 x 5 to get the area of the square.
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