MATHEMATICS MIDDLE SCHOOL

Which of the following represents 645?A. 6 hundreds + 5 ones
B. 3 hundreds + 34 tens + 5 ones
C. 5 hundreds + 4 tens + 5 ones
D. 6 hundreds + 2 tens + 15 ones

Answers

Answer 1
Answer: The answer would be D because you have 6 hundreds and the 2 tens and 15 ones because if you took out ten from the ones then you would get 3 tens and 5 ones. The hope I didn't confuse you
Answer 2
Answer: its D. because 6 = 600 so 2 tens + 600 = 620 so 15 plus all of the above is 645 :D hope this helped

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11.9x+10.5y=178.5 Help me please

Answers

You wanna get the y by itself. So you will subtract 11.9 then move it to the other side. so that is 10.5y = -11.9x +178.5. Then divide everything by 10.5. Then you get y = -11.9x/10.5+17. 11.9x/10.5 is because you cant put 10.5 into 11.9 evenly so you leave it as a division problem. 
Let's solve for x.
11.9x+10.5y=178.5 

Step 1: Add -10.5y to both sides.
11.9x+10.5y+−10.5y=178.5+−10.5y
11.9x=−10.5y+178.5

Step 2: Divide both sides by 11.9.

11.9x/11.9=−10.5y+178.51/1.9
x=−0.882353y+15

What integer represents this scenario: adding 2 stuffed animals to a collection
-2 or 2

Answers

When you add something, you gain more of it. Therefore, it should be positive 2


2

What is the approximate area of the figure? A. 84.8 square feet
B. 94.6 square feet
C. 114.3 square feet
D. 49.6 square feet

Answers

figure is made out of 1 rectangle and 2 half circles
2 half circles=1 whole circle
area of rectangle=LW
area of circle=pir^2
aprox pi=3.14 for this problem

L=15
W=5
LW=5 times 15=75


ara of circle
5=diameter
diameter/2=radius
5/2=radius=2.5
3.14(2.5^2)=area of circle
3.14(6.25)=A
19.625=A

add them
area of rectangle+area of circle=75+19.625=94.625

answer is B

Please please help me!

Answers

Answer:

if i'm not mistaken it's A

Please help idk this??

Answers

Answer:

0.17% = 17/100

Step-by-step explanation:

0.17%*100=17/100 bla bla vla

Exercise

1. If we multiply by three the numerator of a fraction and add 12 to the denominator, the value of the fraction is three quarters, and if the numerator increases in 7 and the denominator trebles the value of the fraction is a way, finds the fraction.

Please I am grateful for them to him very much thank you for the given attention...:)

Answers

x - nominator
y - denominator

(3x)/(y+12)=(3)/(4)\n (x+7)/(3y)=(1)/(2)\n\n 3(y+12)=12x\n 2(x+7)=3y\n\n 3y+36=12x\n 2x+14=3y\n\n 2x+14+36=12x\n 10x=50\n x=5\n\n 3y=2\cdot5+14\n 3y=10+14\n 3y=24\n y=8\n\n (x)/(y)=\boxed{(5)/(8)}
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