MATHEMATICS MIDDLE SCHOOL

1 half ( 7 x 1 + 8 ) + 11

Answers

Answer 1
Answer: order of operations
PEMDAS
parenthasees
exponens
mulitpicatpon
diviosn
additon
subtraciton
firs timplify parethasees
7*1+8
mult first
7*1=7
7+8=15

nw we have
1/2*(15)+11
multiply 1/2 and 15 and get 15/2=7 and 1/2
then add 11
7+11=18
18 and 1/2 is answer or 37/2 or 18.5
Answer 2
Answer: 7*1=7+8=15
1/2(15) +11
7.5+11= 18.5

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Ruby’s weighs 150 pounds. She went on a diet and lost 6.5 of her weight. How many did she lose ?

Answers

Answer:

Step-by-step explanation:

Hey use a pound converter I tried one idk if it's correct but I got 65.0905051

She lost 9.75 pounds.

6.5 / 100 = 0.065

0.065 x 150 = 9.75.

What is the square root of 25/9?

Answers

The square root of 25/9 is 5/3
square root of 25 = 5
square root of 9 = 3
therefore the square root of 25/9 = 5/3

What is 6.805 rounded to the nearest whole number

Answers

6.805 is rounded to 7
It would be 7 because .8 rounds up to 1 and 1 + 6 = 7.

Factor completely: x^4 – 16 A. (x2 + 2)3(x – 2) B. (x2 + 4)(x + 2)(x – 2) C. (x2 + 4)(x2 – 4) D. (x + 4)(x – 4)

Answers

x^4 - 16 = 
(x^2 + 4)(x^2 -4) = 
B. (x^2 + 4)(x + 2)(x -2) 

Factorise fully
15b^2 + 20b

Answers

15b^2+20b
5b(3b+4)

Hope this helps :)
15b^2 + 20b
=5b(3b + 4)
......................

Heeeeeeeeeelp......​

Answers

Answer:

x+7

Step-by-step explanation:

So it's been a while since I took Geometry, so I don't know what principle makes these angles equal to each other, but I know that they are in fact equal. So that means that 6x +3 = 45. Subtract 3 from each side gets you 42+6x, then divide each side by 6, which gets you your answer of x=7.
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