MATHEMATICS MIDDLE SCHOOL

What is 10 = -9/2x - 7 - 3/2x
A = -17/6
B = -1/2
C = 17
D = 17/6

Answers

Answer 1
Answer:

Answer:

x= -17/6

Step-by-step explanation:

10=-9/2x-7-3/2x

multiply all by 2

20=-9x-14-3x

add -9x to -3x

20=-12x-14

replace 20 with -12x and put -12x as a positive

12x=-14-20

add -14 to -20

12x=-34

divide both sides by 12

x= -17/6

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Collect like terms: x^(2)x^(2) +6x-2x-12

Answers

theonly like erms are the x terms
6x-2x=4x

x^2+4x-12

What is the missing base for 1000= ____ to the power of 3

Answers

1000 = x^3

1000 cube root = x

10 = x

10*10 = 100

100*10 = 1000

Hope this helped, and please make me brainlest! :)

Find the area of the shaded region. Round your answer to the nearest tenth.

Answers

Rounded to the nearest tenth, the area of the shaded part is 537.3 in²

We need to get the area of the circle to get the area of a semi-circle.

Area of the circle = π r²

diameter is 37 in. to get the radius, we divide the diameter by 2. 
r = 37/2
r = 18.50

π = 3.14

Area of a circle = 3.14 * 18.50²
A = 3.14 * 342.25
A = 1074.665

To get the area of a semi-circle, we just divide the area of a circle by 2.
A = 1074.665 / 2
A = 537.3325 in²  rounded to the nearest tenth 537.3 in²

Find the square root of 7-2√5​

Answers

Answer:√5 - √2

Step-by-step explanation:

= √(5 + 2 - 2√10 )

= √{(√5)² +(√2)² - 2.√5.√2}

= √(√5 - √2)² (by identity a² + b² -2ab = ( a-b)²)

= √5 - √2

5√5 = 11.8033989 or -2√5+7

Tyler simplified the expression. His procedure is shown below.

Answers

Answer:

B:Both powers should be in the denominator with positive exponents.

Step-by-step explanation:

We are given that Tyler simplified an expression

x^(-3)y^(-9)

We have to find an error which Tyler makes in her simplification

Step 1: x^(-3)y^(-9)

Step 2:(1)/(x^3)\cdot y^(-9)

Step 3:(1)/(x^3y^9)

Hence, Tyler's error is both exponents should be denominator with positive exponents.

Answer:B:Both powers should be in the denominator with positive exponents.

Answer:

Step-by-step explanation:

                                                        1

Tyler correctly rewrote x^(-3) as ------- , but

                                                       x³

                                                       1

he incorrectly wrote y^(-9) as   ---------

                                                    y^(-9)

Both x^9 and y^9 should be in the denominator.  This corresponds to the 2nd given possible answer.

What is the solution to the equation -10.3+y=5.2

Answers

Answer:

Step-by-step explanation:

I think it would be something like this, maybe

-10.3+y=5.2

-103/10+y=52/10

(-103)+10y/10=2*2*13/2*5

y=31/2

which is 15.5
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