Which equations are true for x = -2 and x = 2? Select two options
x2 - 4 = 0
x2 = 4
3x2 + 12 = 0
4x2 = 16
O2(x - 2)2 = 0

Answers

Answer 1

Answer:

A, D

Step-by-step explanation:

EDGE 2021


Related Questions

The Pythagorean Theorem is
a2 + b2 = c2
a + b = c
c² + a²=b²

Answers

Answer:

a² + b² = c²

Step-by-step explanation:

Pythagorean Theorem: a² + b² = c²

We use the Pythagorean Theorem to help us solve for missing right triangle side lengths. It is wise to remember this formula.

A gardener is planting a garden in the shape of a square. The gardener wants the side of the square garden to be between 15 and 18 feet long. The gardener wants to put a fence around the garden. How many yards of fencing will be required to enclose this square garden? Remember that 3 feet equals 1 yard. If every yard of fencing costs $1.50, how much will the gardener need to build the fence?

Answers

Answer:

$31.99

Step-by-step explanation:

The idea begin this problem is to solve for the perimeter of the square garden using the expression for perimeter which is

Perimeter of square= 4L

given that the garden wants the side of the square garden to be between 15 and 18 ft long

Say we go with a length of 16ft (you can pick any number in the range just maintain the formula for the perimeter)

perimeter= 4(16)

perimeter= 64ft

now we have to convert ft to yard

1 yard=3ft

x yard=64ft

cross multiply we have

x=64/3

x=21.33 yards

given that a yard cost $1.5, therefore 21.33 yards will cost

=21.33*1.5

=$31.99

Henry has a total of 26 quarters and dollars in his pocket. They're worth $17. How many of each type of coin
does Henry have?
A. 16 quarters and 10 dollars
B. 10 quarters and 16 dollars
C. 14 quarters and 12 dollars
D. 12 quarters and 14 dollars

Answers

Answer:d

Step-by-step explanation:

A recipe calls for 3/4 cup of mayonnaise, 2/3 cups of sour cream, 1/2 cup of buttermilk, and 2 cups of spinach. What are the total cups of this recipe? Make sure your answer is in a mixed number fraction form.

Answers

Answer:

Step-by-step explanation:

The cost of 6 1/4 kg of apples is $400. How much do the apples cost per kg?​

Answers

Answer: = Rs 64R

Step-by-step explanation:

The cost of 6 (1/4) kg = (25/4) of apples is Rs 400 Cost of apple per kg is = (25/4) /400 = (4/25) × 400

april and bill went to the grocery store to buy chocolate bars. April bought 4 small chocolate bars and 6 large chocolate bars and 3 large chocolate bars. if april paid $16.50 and bill paid $11.25 what is the price of a single large chocolate bar

Answers

Rewind- what did April get then what did bill get

The cost of a large single chocolate is $0.25.

What are algebraic expressions?In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.

Given is that April and bill went to the grocery store to buy chocolate bars. April bought 4 small chocolate bars and 6 large chocolate bars and 3 large chocolate bars. April paid $16.50 and bill paid $11.25.

We can write -

4x + 6y = 16.50                               ... Eq{ 1 }

3x = 11.25                                            ... Eq{ 2 }

On solving the equation, we get -

{x} = 11.25/3

{x} = 3.75

Now, we can write -

4x + 6y = 16.50

4 x 3.75 + 6y = 16.50

6y = 16.5 - 15

6y = 1.5

y = 1.5/6

{y} = 0.25

Therefore, the cost of a large single chocolate is $0.25.

To solve more questions on algebraic expression visit the link below-

brainly.com/question/1041084

#SPJ6

what is 0.075 and 3.56 as a fraction

Answers

Answer:

Step-by-step explanation:

1: 3/40

2:89/25

Adan works as an information technician and fitness trainer. As a technician, he earns $22 per hour. Last week he worked x hours as a technician and his friend paid him $50 for a day of fitness training. Write an expression to represent the total amount Adan earned last week.​

Answers

Answer: t = 22x + 50

Step-by-step explanation:

t = total amount earned

x = hours worked

We know his friend payed $50, so that is our initial value. We don’t need hours for that one.

For his job as trainer, he earns $22 per hour but we don’t know how many hours he earned, so that is x. That is how I got the 22x.

Hope this helps! And of course, feel free to use any variables of your choice. :)

amy runs 2 miles south, the turns around and runs 3 miles north. what is her displacement? a. 5 miles , b. 2 miles, c. 1 mile, d. 3 miles . i need hep now .

Answers

Option C, 1 mile is the correct answer

The displacement is 1 mile.

Given that, Amy runs 2 miles south, then turns around and runs 3 miles north.

What is displacement?

Displacement is the change in the position of any point or object. It has a direction and magnitude, so it is a vector quantity. It is shown with an arrow that points from the starting position to the final position.

Now, Amy runs 2 miles south from the fixed point he runs in the north direction for 3 miles.

So, the displacement=1 mile

Therefore, the displacement is 1 mile.

To learn more about the displacement visit:

https://brainly.com/question/16965160.

#SPJ2

Under very specific instructions, a jeweler made one ring for the queen and one ring for the princess. The gem on the queen's ring weighed 9/10 of a carat and the stone on the princess's ring weighed 7/10 of a carat. How much heavier was the stone on the queen's ring than the stone on the princess's?

Answers

Answer: 1/5

Step-by-step explanation:

From the question, we are informed that the gem on the queen's ring weighed 9/10 of a carat and the stone on the princess's ring weighed 7/10 of a carat.

To calculate how heavier the stone on the queen's ring was than the stone on the princess will be:

= 9/10 - 7/10

= 2/10

= 1/5

How do I show my work for how many 3/4 are in 6???

Answers

Answer:  There are 8   3/4 in 6.

Step-by-step explanation:

To find out how many 3/4 are in 6,  then divide  6 by 3/4.

6 ÷ 3/4 = 8  

4x - 5 - 2x = x - 5

No Solution
X=0
X=4
X=5

Answers

Answer:

x = 0

Step-by-step explanation:

Step 1: Write equation

4x - 5 - 2x = x - 5

Step 2: Solve for x

Combine like terms: 2x - 5 = x - 5Subtract x on both sides: x - 5 = -5Add 5 to both sides: x = 0

Step 3: Check

Plug in x to verify it's a solution.

4(0) - 5 - 2(0) = 0 - 5

0 - 5 - 0 = -5

-5 = -5

solve 2(4x+1)<3(2x-3)

Answers

Answer:

x < -5.5

Step-by-step explanation:

2(4x + 1) < 3(2x - 3)

first, treat it like an equation

2 ( 4x + 1 ) < 3 ( 2x - 3)

distribute

8x + 2 < 6x -  9

now use inverse operations

8x + 2 < 6x - 9

    -2           -2

8x < 6x - 11

-6x   -6x

2x < -11

/2     /2

x < -5.5

are the trianlges congruent. am I right?

Answers

Answer:

The triangles are congruent.

Step-by-step explanation:

Don't let those little lines mess up. Both triangles have the same shape and size. They are congruent.

How many kg in 12980 g ?
Help?

Answers

Answer:

12.98

Step-by-step explanation:

Simplify 3(2a - y) - 4(2y - a).

Answers

The answer would be 10a-11y

Answer:

10a - 11y

Step-by-step explanation:

3(2a - y) - 4(2y - a)

open the parenthesis

6a - 3y - 8y + 4a

combine like terms

6a + 4a - 3y - 8y

10a - 11y

SPEED QUESTION!!!
the first person that answers this and gives step by step explanation gets 50 points plus brainliest answer!
GOOD LUCK!!!

Answers

Answer:

x>13 (C)

Step-by-step explanation:

1) simplify -> 2x+7>33

2) subtract 7 from both sides -> 2x+7-7>33-7 = 2x>26

3) divide both sides by 2 -> 2x/2>26/2

x>13

what equation could be represented by the number line

Answers

i’m sorry if there isn’t supposed to be but is there supposed to be a picture, if so you don’t have one :)

Write the equation of a line the line that passes through (3, 9) and is parallel to the line y = 5x - 15.

Answers

Answer:

Y=5X-6

Step-by-step explanation:

Y=mx+b

m=5

when x=3 and y=9 b= -6

Can somebody give me a answer and explanation to 19× −(1)∙ (−15) please.

Answers

Answer:

I dont know the answer but maybe this page can help, it even gives you the explanation or the steps.

Explanation:

symbolab.com

Jenna’s science teacher changed the number of assignments for the semester to 85. This is shown as the blue line on the graph.

How many more weeks will it take Jenna to complete all the assignments if she completes assignments at the same rate?

more weeks

Answers

Answer: it would be 3 more weeks

Answer:

3

Step-by-step explanation:

I keep getting the answer wrong for the value please help.​

Answers

Answer: d) +/- 2/3

Step-by-step explanation: Since x^2 is a exponent, to cancel it out you would have to square root both sides. Therefore, x is equal to +/- 2/3.

Answer:

D

Step-by-step explanation:

The answer is D which is ± 2/3.

x² = 36/81

The √36 is 6 and √81 is 9. So √(36/81) will be 2/3. However, the answer is ±2/3 because we are taking the square root so there's a possibility that the answer can be positive and negative.

how do you make this symbol on laptop ≤ ive just copied and pasted it but how do you make it???

Answers

Answer:

It's better to just copy and paste every time you need to use it but if you use it often, hold the option key and period key. This only works on an apple mac.

Btw: It might not work im not sure, since im using a chromebook...

A car rental service charges a one-time fee of $19.99 in addition to $0.29 per mile drive. If the final total for renting the car is $73.93, select which equation best represents the situation. Let m represent the number of miles driven.

*Answer Choices*
19.99m + 0.29m = 73.93

19.99m + 0.29m = 73.93

(19.99 + 0.29)m = 73.93m

19.99 + 0.29m = 73.93

Answers

Answer:

Your answer is: D) 19.99+0.29m=73.93

We are trying to find the miles driven so therefore 0.29$ is per mile. So we have to see how many 0.29$ along with 19.99$ can fully add up to 73.93$

Step-by-step explanation:

Hope this helped : )

If you were to multiply 3X25, you would have a product of 75.

Explain 2 ways you could rewrite 25 and using the distributive property still obtain a product of 75.

Include one example using addition and the other example using subtraction. For example, if I were to rewrite the integer 72, I could choose (70 + 2) or (80 – 8).

Answers

An example with addition is 3x(20+5) as 20 plus 5 is still 25, and an example with subtraction is 3x(30-5), as 30 minus 5 is 25.

One angle of a triangle measures 118°. The other two angles are congruent. Enter and solve an equation to find the measure x of the congruent angles. An equation is = 180. The congruent angles each measure​

Answers

Answer:

2x+118=180

x=31

Step-by-step explanation:

Congruent means equal so the two missing angles are same, therefore being 2x. Add 118 to 2x since it is already known and all of that is equal to 180. Solve:

2x+118=180

2x=62

X=31

What is the answer to this?
-6+13=

Answers

Answer: -6+13=7

Step-by-step explanation:

Jose needs to enclose a rectangular section of his yard. The perimeter of the section is 27 feet, and the area is 35 square feet. Find the length and width of the section.
Part II: The equation for area is A = LW. Substitute the expression you found for W in Part I into the area equation. Then, if the area is equal to 35 square feet, write the equation in standard form with a, b, and c as whole numbers.

Answers


Let the width be W and length be L
LW = 35
L = 35/W
Perimeter = 2 ( Length + Width )
27 = 2 ( 35/W + W )
13.5 = (35+ W^2) / W
W^2 - 13.5W + 35 = 0
W^2 - 10W - 3.5W +35 = 0
W ( W -10) - 3.5 ( W - 10) = 0
( W-3.5) ( W-10) = 0
W = 3.5 or 10
ANSWER Width = 3.5' Length = 10'
Not sure tho lol

Given the following diagram, enter the required information.

Answers

Answer:

39° 44' 52''

Step-by-step explanation:

Givenm∠DXB = 70° 15' 12''m∠DXC = 30° 30' 20''To findm∠CXBSolution

According to Angle Addition postulate:

m∠DXB = m∠DXC + m∠CXB

Therefore

m∠CXB = m∠DXB - m∠DXCm∠CXB = 70° 15' 12''- 30° 30' 20'' = 39° 44' 52''

Round 82,236 to the nearest ten thousand.

Answers

Answer:

80,000

Step-by-step explanation:

2<5  thus you round down

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