Mathematics High School

Which of the following are possible values for x in the equation x^2=90? Choose the TWO correct answers. Options: 30, -9√10, -3√10, 45, √90

Answers

Answer 1

Answer: x=3√10 or x=−3√10

Step-by-step explanation:

Let's solve your equation step-by-step.

x2=90

Step 1: Take square root.

x=±√90

x=3√10 or x=−3√10

Related Questions

Please help! Write in transformation form giving brainliest

Answers

Answer:

When you reflect a point across the y-axis, the y-coordinate remains the same, but the x-coordinate is transformed into its opposite. When working with the graph of y = f (x), replace x with -x. Reflection in y = x: When you reflect a point across the line y = x, the x-coordinate and the y-coordinate change places.

trig question above plz plz plz help

Answers

The answers are:
1. B
2.C

What is the total area of the figure below?​

Answers

so: to calculate the area of a triangle is equal to (bxh)/2 and for the trapezoid is ((a+b)/2)xh
so for the triangle part we need to substitute each part for the formula (6x8)/2 which is equal to= 24inch^2. While for the trapezoid substituted would end up like this: ((16+10)/2)(9) which equals to 117 inch^2
yo get the total area we need to add both of them and it would end up being 117inch^2 + 24inch^= 141 inch^2

I NEED HELP WITH THIS RIGHT NOW!!

Kurt is training to run in a race. He recorded the distances and times of his trainings runs last week. On which day was the ratio of time to distance the greatest?

Answers

I think it’s D sorry if im wrong

Answer:

c

Step-by-step explanation:

just derived everyone

Triangle Review 2.0 (Math i need help please)

Answers

Answer:

A= 30

Step-by-step explanation:

This requires several steps.

First, you need to find the 2 other missing angles.

One can be found easily by substracting 130 from 180

so 180-130 = 50

The other angle is the same as 8x+4

Now set up your equation

180=3x-6 + 8x+4 +50

180 = 3x + 8x -6 + 4 +50

180+6-4-50 = 11x

132 = 11x

132/11 = x

12 = x

Now plug in 12 for x in your angle A

A=3x-6

A=3 * 12 - 6

A=36 - 6

A= 30

help me please this is super hard for me

Answers

Answer:

D

Step-by-step explanation:

Answer:

Answer is D I believe

Step-by-step explanation:

shows all of the possible outcomes

1121 help44445555 ty

Answers

Answer:

B

Step-by-step explanation:

PLZZ HELP
2/3 divided by 5

Answers

Answer:

2/15

Step-by-step explanation:

2/3 divided 5 is really just:

2/3*1/5

that is just 2/15!

Answer:

2/15

Step-by-step explanation:

(Keep Change Flip) KCF

2/3  / 5 =

2/3 *1/5 = 2/15

When dividing you do the opposite which is multiplication.

The sixth grade teachers (10 teachers) ordered 2 large pizzas all together for lunch. Each pizza costs 13.75. If they were to split the cost evenly, how much will each person need to pay?​

Answers

Answer:

they will pay a lot my guy

Answer:

$2.75

Step-by-step explanation:

cost of pizzas

13.75 * 2 = 27.50

Cost per person

27.50/10 = 2.75

Please answer this math question for me

Answers

Answer:

Hello!! answer: a = 45

Step-by-step explanation:

This is a complimentary angle so we will just do 90 - 45 and get 45 because 45 + 45 = 90 Hope that helps!

Answer:

a = 45

Step-by-step explanation:

The total angle of the shape is 90°

That means you should subtract 90° from 45°

90 - 45 = 45

That's your answer!

Hope this helped :)

Please help me find the perimeter and area of each polygon. Will mark brainlyist plus 30 points! It’s due in an hour

Answers

Answer:

Step-by-step explanation:

for the triangle:

1.9x8/2= 7.6mi (this is area)

perimeter=17mi

for the trapezoid:

area= 18.36+13.6=31.96yd

perimeter=24.1yd

99 % of the trees in our neighborhood are eucalyptus trees. The town planning commission wants to get rid of some of these trees because they spread too quickly. However, the people in my neighborhood like the trees. The commission argues that their new eucalyptus tree removal plan will cut down so few eucalyptus trees that 98% of the trees in our neighborhood will be eucalyptus trees. If the plan only involves removing eucalyptus trees, what percent of the existing trees in my neighborhood would the plan remove

Answers

Answer:

50%

Step-by-step explanation:

Let the total number of trees be T and suppose that this is made up of eucalyptus trees E and other kinds of trees, O.

Then E+O=T, and since 99% of the trees are eucalyptus trees, EE+O=0.99.

Therefore

0.99E+0.99O=E

0.01E=0.99O

E=99O.

Suppose we reduce the number of eucalyptus trees by some amount x and that the remaining number of eucalyptus trees are now 98% of the total trees.

Then we would have E−x(E−x)+O=0.98.

Therefore,

0.02(E−x)=0.98O

0.02E−0.02x=0.98O

0.02x=0.02E−0.98O

x=E−50(0.98)O

x=E−49O

x=E−49(E99)

x=5099E≈0.505050...×E.

So we end up removing a little over half of the eucalyptus trees. EDIT: Forgot to mention - removing 50.505050...% of the eucalyptus trees means that we are removing 0.50505050....×0.99T which is 0.5T or half the trees in the neighborhood.

Please help me this is my last question

Answers

Answer:

x=-22

Step-by-step explanation:

please helppp meeee i really need it

Answers

Answer:

i think c. the elevation of a mountaintop

Step-by-step explanation:

let me know if this is incorrect

Need help with school

Answers

Answer:

This is a test, please refer to the Academic Integrity and Honor Code

Solve for the value of a in the triangle below. Round your answer to the nearest tenth

Answers

Answer:

........................

hello please help i’ll give brainliest

Answers

Answer:

landslide

Step-by-step explanation:

MARK AS BRAINLEST!!!

Answer:

earthquake okkkkkkkkkkkkk

PLS HELPPPP MEEEE I NEED HELP ASAPPP WITH THIS QUESTION

Answers

Answer: ratio 2/1 percent 5%

Step-by-step explanation:

you are welcome

Answer:

a. 23:12

b. 5.6%

Step-by-step explanation:

Please answer this math question for me? There is three questions in this one picture

Answers

Answer:

The picture isn't showing up for me

O is the center of the circle. Assume that lines that appear to be tangent are tangent. What is the value of x?

Answers

Answer:

x=48

Step-by-step explanation:

Please help it’s geometry will mark brainliest!

Answers

Answer:

its 216

Step-by-step explanation:

when it's one the edge the arc is double the angle

a 550 washing machine is discontinued 15% how much is saved

Answers

$82.50 is saved !! :)

Determine the difference quotient for f(x)=−6x2−x+4

Answers

Answer:

Here 's the working for the questions

Step-by-step explanation:

Mark brainliest pls

Mary wears an outfit everyday that consists of one top one bottom and one scarf.Her wardrobe consist of 3 bottoms 5 tops, and 2 scarfs. how many different outfits can Mary put together?

Answers

Answer:

30

Step-by-step explanation:

You simply just mutliply them

3*5*2=30

In 1993, a radio cost $25. Now, the radio cost $5. What is the percent of change?

Answers

25 - 5= 20
20/25 = 0.8
0.8*100 = 80
Percent change is 80%

х
-
The table shows a proportional relationship between x and y. Which is k, the constant
of proportionality, such that y = kx?
у. x
0 0
3. 5
6. 10
9 15
12 20

Answers

Answer:C 3/5

Step-by-step explanation: the answer is not as seen on everyone’s lesson but I did the math

How do you solve 12*0.2^8=x ?

Answers

Answer:

[tex]x = 3.072 * 10^{-5}[/tex]

Step-by-step explanation:

[tex]x = 12*0.2^8[/tex]

[tex]x = 12 * 2.56E-6 = 0.00000256[/tex]

[tex]x = 3.072E-5 = 0.00003072[/tex]

Regina has 16 pencils. James has 3 times as many pencils as Regina.
What are two ways to find the number of pencils James has?
A. 16 + 3 and 16 X 3
B. 16 + 16 + 16 and 16 x3
O C. 3+3+3 and 48 X3
D. 16 + 3 and 3 X 48
E. 3+3+3 + 16 and 16 X 3

Answers

Answer:

B

Step-by-step explanation:

The radius of a circle is 12 feet. What is the circle's area?
r=12 ft
Use 3.14 for .
square feet
Submit

Answers

Answer:

452.16 ft²

Step-by-step explanation:

Area = πr² = π(12)² = 144π = 452.16 ft²

Need a quick response help me out

Answers

Answer:

-5 1/4

Step-by-step explanation:

-4 1/2 -3/4

= -4 2/4 -3/4

= -4 5/4

= -5 1/4

Answer:

-5 1/4

Step-by-step explanation:

Other Questions
determine the number of moles and mass of the sample of argon occupying 37.8L at STP bestiess helpssss plsss Given square ABCD, what is the length of AD? How should it be written?A. American music therapy AssociationB. American Music Therapy associationC American Music Therapy AssociationD. American music therapy association Answer this question please quickly PLEASE HELP ASAP!!57. Sodium sulfate is used in the manufacture of detergents.a. Identify each of the component elements of sodium sulfate, and write the compound's chemical formula.b. Identify the compound as ionic or covalent.c. Calculate the percent by mass of each element in sodium sulfate. You have a basketball trophy in your room. The ball on the trophy has a diameter of 9 inches. What the volume of the ball? Peterson Company purchased machinery for $960,000 on January 1, 2014. Straight-line depreciation has been recorded based on a $60,000 salvage value and a 5-year useful life. The machinery was sold on May 1, 2018 at a gain of $18,000. How much cash did Peterson receive from the sale of the machinery pleaseeeeeeeeeee help me I NEED HELP PLEASETriangle ABC is similar to triangle DEF. The length of AC is 12 cm. The length of BC is 18 cm. The length of DF is 10 cm.What is the length of EF?Enter your answer in the box. Deborah Tannen, a professor of linguistics, a. studied whether one form of interaction dominates American culture. b. suggested that Americans live in an argument culture. c. both a and b. d. neither a nor b. Please select the best answer from the choices provided Calculate the perimeter and the area. Can yall help and if you could show the steps PLEASE HELP ME WITH THIS!!!!!!!!!!!!!!!!!! One of the alternative forms of a gene that governs a characteristic. Can be seen as AA, Aa, aa A.Genotype B.Genetic VariationC. Phenotype D.Gene find the difference between 0.1 kg and 75g Gerald is lightheaded and tired from the lack of oxygen in his tissues.What most likely is the reason he feels this way.his plasma level is to highhis white blood cell count is highhis platelet count is lowhis red blood cell count is low A bird is flying 50 feet above the ground. If -20 describes a change in the bird's height, which of the following is true?The bird is flying 50 feet closer to the ground,The bird is flying 20 feet closer to the ground,The bird is flying 50 feet higher up from the ground.The bird is flying 20 feet higher up from the ground How does misunderstanding fuel bad decisions and relations? A Jewish state was created after World War II by what organization?1. the Zion organization2. NATO3. the League of Nations4. the United Nations voter ID laws prevent fraud and build voter confidence, states have vote ID rules because?