MATHEMATICS MIDDLE SCHOOL

Help with number 8 please thank you !!!!!!!

Answers

Answer 1

Answer:

Answer:

1/9 and -1/9

Step-by-step explanation:

81x^2=1

Dividing by 81 on both sides:

x^2=1/81

Taking the square root:

x= ±1/9

Related Questions

In a bag containing black and white marbles, 3/8 of the marbles are black.Which could be the numbers of black and white marbles in the bag?A.3 black and 8 whiteB.12 black and 20 whiteC.20 black and 12 whiteD.8 black and 3 white
Bao saved $179 a month. He saved $145 less than Ada each month. How much would Ada save in three and a half years?
Javier has a job installing windows. He earns a rate of $75 per day plus $8 per window installed. He also receives a stipend of $25 for snacks. Javier knows his weekly earnings can be shown with the following expression: 75d + 8w + 25 Part A: Identify a coefficient, a variable, and a constant in this expression.Part B: If Javier works for 5 days and installs 48 windows, how much does he earn? Show your work to receive full credit. part C: If Javier gets an increase in his stipend and receives $40 for snacks, would the coefficient, variable, or constant in the equation change? Why?
Write an equation to represent the measures of the angle
of the pets in the pet show 5/6 are cats.4/5 of the calico cats what fraction of the pets are calico cats

Can someone help me with my last homework question, please show the work and explain what you did so I can understand! if you do that I might mark you as brainliest! Thanks!

Answers

Ok, so I worked out the problem.

So for part a) you just multiply 8 by 25% then add the product to get the new perimeter.

Part B you Add all sides for the original square and the new square to get the perimeters of each then you divide the old square perimeter by the new square perimeter to get the percentage.

Part C you get the areas pf bother squares then divide the old square area by the new square area to get the percentage change.

If you have any questions, let me know.

If 1/2 x 10 = 8 -x, then x = ____

Answers

$(1)/(2)\ *\ 10=8-x\n\n5=8-x\ \ \ \ /+x\n\nx+5=8\ \ \ \ /-5\n\nx=3$

What is the approximate volume of a cylinder with a diameter of 10 meters and a height of 5 meters? Use 3.14 for pi.

Answers

157. Because when you multiply 10 times 3.14 times 5 you get 157.

Evaluate the expression. 42 + 5 • 32 – 42 ÷ 23

Answers

42 + 5 * 32 - 42 ÷ 23

I am going to use the PEMDAS order. Parenthesis, Exponents, Multiply, Divide, Add, Subtract

Multiply ⇒ 5 * 32 = 160
42 + 160 - 42 ÷ 23

Divide ⇒ - 42 / 23 = -1.83
42 + 160 - 1.83

Add ⇒ 42 + 160 = 202
202 - 1.83

Subtract ⇒ 202 - 1.83 = 200.17

42 + 5 * 32 - 42 ÷ 23 = 200.17

Gopal is thinking of a number. He says that the sum of the number and 8, mulltiplied by 3/4, is equal to -12. Which equations can be used to find Gopal's number?choose all that apply.

A 3/4(x+8) + -12
B 3/4x +6 = -12
C x+6= -12
D3/4x+ 8= -12