MATHEMATICS MIDDLE SCHOOL

Solve linear equation 2y+20=2-y. 3y+20=2

Answers

Answer 1

Answer:

Answer:

y = -6

Step-by-step explanation:

y is multiplied by 3 and 20 is added to the sum. We undo these operations in reverse order.

First we subtract 20 from both sides of the equation:

3y = -18

Then we divide both sides of the equation by 3 to undo the multiplication.

y = -18/3 = -6

The solution is y = -6.

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On a class test, Lesley scored 4.5 points more than her friend Cathy. Lesley scored 81.5 points. Cathy's score, x, can be found using the equation below.The solution to the equation was calculated to be x = 36. Is this solution reasonable?

A.
Yes, it is reasonable because Lesley scored 4.5 points more than Cathy. Cathy scored more than 81.5 points.
B.
No, it is not reasonable because Lesley scored 4.5 points less than Cathy. Cathy scored less than 81.5 points, not more.
C.
Yes, it is reasonable because Lesley scored 4.5 points more than Cathy. Cathy scored 86 points.
D.
No, it is not reasonable because Lesley scored 4.5 points more than Cathy. Cathy scored less than 81.5 points, not more.

Answers

Answer: B

Step-by-step explanation:

-Help?-Simplify.
$8\sqrt{63x^(14) 14y^(9)$
Assume x and y are nonnegative.

A: $24x^(7)y^(4)√(7y)$
B: $3x^(7)y^(4)√(7y)$
C: $24x^(5)y^(4)\sqrt{7x^(2)y}$
D: $24x^(7)y^(3)√(7)$

Answers

the simplified expression is $24x^7 y^4 √(7y)$ , which corresponds to option A.

To simplify the expression $$8\sqrt{63x^(14)14y^9}$,$ we can break down the radicand into its prime factors and then simplify:

$8\sqrt{63x^(14)14y^9} = 8√(7 \cdot 9 \cdot 7 \cdot 2 \cdot (x^7)^2 \cdot (y^4)^2 \cdot (y^1))$

Now, we can take the squareroot of perfect squares and pull them out of the square root:

$8 \cdot 3 \cdot 7 \cdot x^7 \cdot y^4 \cdot √(y)$

Simplifying further:

$24x^7 y^4 √(7y)$

To know more about expression:

brainly.com/question/36917962

#SPJ3

Answer:

Step-by-step explanation:

https://tex.z-dn.net/?f=24x%5E%7B5%7Dy%5E%7B4%7D%5Csqrt%7B7x%5E%7B2%7Dy%7D

this is correct

Help Please I really think its c for 77.)
What is the standard form of the equation?

5x = 4y – 3

A.
5x – 4y + 3 = 0

B.
5x = 4y – 3

C.
5x + 3 = 4y

D.
5x – 4y = –3

8.)
What is the slope of the line –6y + 2x = 18 in simplest form?

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Answers

$\text{The standard form a linear equation is given by the formula:}\nAx+By+C=0\n\n5x = 4y - 3\n5x-4y+3=0 \Rightarrow A$

$-6y+2x=18\n-6y=-2x+18\ny=(-2)/(-6)x+(18)/(-6)\ny=(1)/(3)x-3\n\nm=(1)/(3)$

What is 33 in expanded form

Answers

33 expanded form = 30+3

30+3 is 33 in expanded form I am writing more cuz I need 20 characters

what is the range of 74, 68, 87, 92, 96, 47, 26, 87 a. 122 or b. 70

Answers

the answer is B. 70!!!

Meaning of Range in Maths: difference between the highest and lowest number in a sequence
CORRECT SOLUTION: H no: 96..... L no: 26.......... 96-26= 70
CORRECT ANSWER: 70

Which is bigger 0.7 or 0.51

Answers

0.7 is the correct answer because 0.7 is the same thing as 0.70

0.7 is bigger than 0.51

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