I need help plz ASAP

2x^2-7=-7

This is solving quadratic functions by square roots btw

Answers

Answer 1

Answer:

x = 0

Step-by-step explanation:

add 7 to each side to get:

2x² = 0

divide each side by 2 to get:

x² = 0

take square root of each side to get:

x = [tex]\sqrt{0}[/tex]

x = 0

Answer 2

Answer:

x = 0

Step-by-step explanation:

[tex] {2x}^{2} - 7 = - 7[/tex]

[tex] = {2x}^{2} = 0[/tex]

[tex] = {2x}^{2} \div 2 = 0 \div 2[/tex]

[tex] = {x}^{2} = 0 \div 2[/tex]

[tex] = {x}^{2} = 0[/tex]

[tex] = x = 0[/tex]


Related Questions

Solve systems of linear equations by elimination.check your solution

Answers

Answer:

Explanation:

11.
x + y = 2 (1)
2x + 7y = 9 (2)
—————-—
-2(x + y = 2)
2x + 7y = 9
——————-
-2x - 2y = -4
2x + 7y = 9
——————-
5y = 5
y = 1

x + y = 2
x + 1 = 2
x = 1

12.
8x - 5y = 11
4x - 3y = 5
——————
8x - 5y = 11
-2(4x - 3y = 5)
———————-
8x - 5y = 11
-8x + 6y = -10
———————-
y = 1

4x - 3y = 5
4x - 3 = 5
4x = 8
x = 2

17.
9x + 2y = 39
6x + 13y = -9
———————
2(9x + 2y = 39)
-3(6x + 13y = -9)
—————————
18x + 4y = 78
-18x - 39y = 27
————————
-35y = 105
y = 105/-35
y = -3

9x + 2y = 39
9x -6 = 39
9x = 45
x = 45/9
x = 5

Find the DIAMETER if the circumference of a circle is 64.7

Answers

Answer:

20.6

Step-by-step explanation:

In the circle below, suppose m VUX = 152° and mZUVW = 77º. Find the following.
(a) m ZVUX =
(b) m ZUXW =

Answers

Given:

In the circle, [tex]m(\overarc{VUX})=152^\circ[/tex] and [tex]m(\angle MUV)=77^\circ[/tex].

To find:

The following measures:

(a) [tex]m\angle VUX[/tex]

(b) [tex]m\angle UXW[/tex]

Solution:

According to the central angle theorem, the central angle is always twice of the subtended angle intercepted on the same same arc.

[tex]m(VUX)=2\times m\angle VWX[/tex]

[tex]152^\circ=2\times m\angle VWX[/tex]

[tex]\dfrac{152^\circ}{2}=m\angle VWX[/tex]

[tex]76^\circ=m\angle VWX[/tex]

In a cyclic quadrilateral, the opposite angles are supplementary angles.

UVWX is a cyclic quadrilateral. So,

[tex]m\angle VUX+m\angle VWX=180^\circ[/tex]          [Opposite angles of a cyclic quadrilateral]

[tex]m\angle VUX+76^\circ=180^\circ[/tex]

[tex]m\angle VUX=180^\circ-76^\circ[/tex]

[tex]m\angle VUX=104^\circ[/tex]

Now,

[tex]m\angle UXW+m\angle UVW=180^\circ[/tex]          [Opposite angles of a cyclic quadrilateral]

[tex]m\angle UXW+77^\circ =180^\circ[/tex]

[tex]m\angle UXW=180^\circ-77^\circ[/tex]

[tex]m\angle UXW=103^\circ[/tex]

Therefore, [tex]m\angle VUX=104^\circ[/tex]  and [tex]m\angle UXW=103^\circ[/tex] .

DO THIS
NO LINKS pls​

Answers

Answer:

1= 1/6, 2= 1/6, 3= 4/6

Step-by-step explanation:

'1' and '2' are equal and only take up 1/6 of the "circle" each, leaving '3' with 4/6 of it.

Therefore, '1' and '2' would be placed 1/6 along the line, and '3' would be placed 4/6 along the line.

Danielle sells 3 donuts for $9. Write an equation to represent the relationship between the number of donuts sold and the earning

Halp

Answers

3x=9. 3 represents the donuts she sold, x represents the cost of each donut and 9 is the total earning

Explain how you would find the length of one side off a square if the area is 16 square units please HELP

Answers

Answer:

area = length x width 4x4 = 16

side lengths are 4

Step-by-step explanation:

Given the function f(x)=2(3x+7)−4(x−2), what would be the value of input, x, if f(x)=18?

Answers

Answer: x=-2

Step-by-step explanation:

Given

f(x)=2(3x+7)-4(x-2)

f(x)=18

Use substitution method

2(3x+7)-4(x-2)=18

Expand parenthesis

6x+14-4x+8=18

Combine like terms

2x+22=18

Subtract 22 on both sides

2x+22-22=18-22

2x=-4

Divide 2 on both sides

2x/2=-4/2

x=-2

Hope this helps!! :)

Please let me know if you have any questions

PLS I NEED HELP
Which angle pair relationship shows that two lines are parallel?

a. Two alternate interior angles are supplementary.
b. Two vertical angles are congruent.
c. Two corresponding angles are congruent.
d. Two adjacent angles are supplementary.

Answers

Answer:

The answer is C I know that is right

A 50 foot ladder is set against the side of a house so that it reaches up 30 feet. If
Alonso grabs the ladder at its base and pulls it 5 feet farther from the house, how far
up the side of the house will the ladder reach now? (The answer is not 25 ft.) Round
to the nearest tenth of a foot.

Answers

Answer:

21.8

Step-by-step explanation:

a trader needs $300000 to improve her business, she deposits $110000 in her savings account at 5% per annum compound interest. she then adds $50000 to her savings at the end of each year find
(a) her total savings after 3 years.
(b)by how much is her savings greater or less than $300000 at the end of the third year​

Answers

interpret it that there are three payments of 50,000 aside from the current deposit of 110,000

amount after 3 years

= 110,000(1.05)^3 + 50,000( 1.05^3 - 1)/.05

12m +8 – 5m + 2 + m = 6(m + 1)
m =

Answers

Answer:

m = −2

Step-by-step explanation:

Give me brainllest or お前はもう死んでいる

Answer:

m=-2

Step-by-step explanation:

What is g(-3) for g(1) = (x + 7) + 2?

Answers

Answer:

x9

Step-by-step explanation:

i dunno if correct

Answer:

6

Step-by-step explanation:

Since you're given g(-3), set up the equation to look like this:

g(-3) = (x+7) + 2

Then plug in the g(x):

g(x) = (-3 + 7) + 2

Use PEMDAS to solve the equation:

g(x) = (-3 + 7) + 2

g(x) = (4) + 2

g(x) = 6

What is the value of the fraction below?
21/0

A. Undefined
B.0

PLEASE HELP

Answers

The answer is undefined

the product of -5 and the number is 35 what is the number
a. 40
b. 30
c. -7
d. 7

Answers

Step-by-step explanation:

-5y=35

=35÷(-5)

= -7

=-5×-7

=35

Yo guys help pls.pls pls

Answers

Answer:

A rectangle is a parallelogram because parallelograms have to have exactly 2 pairs of parallel sides. A rectangle has 2 parallel sides, therefore it is considered a parallelogram.

Step-by-step explanation:

What is the slope ?
15x-3y = 18

Answers

Answer:

5

Step-by-step explanation:

To find the slope, you need to solve for y

So subtract 15x from both sides

-3y=-15x+18

Divide by -3

y=5x-6

The slope is 5

Answer:

5

Step-by-step explanation:

Because I is smart

Lol, give other person brainliest, they deserve it

Benny plant grew 16.8 centimeters this year. The plant grew the same amount each month. How much did the plant grow each month?

Answers

Answer:

1.4 centimeters each month

Step-by-step explanation:

we know that there are 12 months in a year. if the plant grew 16.8 centimeters in one year, you would have to divide 16.8 by 12 so your equation would be:

16.8/12 = 1.4

*EXTRA PTS* pls answer all 3 :)

Answers

Answer:

5, x = 0,  y = -2

6, x = 4,  Y = 9

7,  X = -2, Y = -2

Step-by-step explanation:

Sean pays £10 for 24 chocolate bars. He sells all 24 chocolate bars for 50p each.
Work out Sean's percentage profit.

Answers

Answer:

the percentage profit is 20%

Step-by-step explanation:

Given that

Sean paid  £10 for 24 chocolate bars

He sold all 24 chocolate bars for 50p each

we need to find out the percentage profit

Since he paid  £10 and sale value is (24 × 0.50) i.e. £12

So, the percentage profit is

= (£12 - £10) ÷ (£10)

= 20%

Hence, the percentage profit is 20%

Explain to me what cathyrn did wrong based of the line plot? I’ll mark brainliest if I have one

Answers

Answer:

Kathryn thinks that the 3 is the age and the 10 is how many are that age. 10 is thr age and the 3 "x's" are how many people are 10 years old.

Hope this helped!

make a conjecture as to what number comes is next
-15,-10,-4, 3, 11, ______

Answers

Given:

The sequence is:

-15,-10,-4, 3, 11, ______

To find:

The next number.

Solution:

We have,

-15,-10,-4, 3, 11, ______

Here, the difference between two consecutive terms are:

[tex]-10-(-15)=-10+15[/tex]

[tex]-10-(-15)=5[/tex]

Similarly,

[tex]-4-(-10)=6[/tex]

[tex]3-(-4)=7[/tex]

[tex]11-3=8[/tex]

It is clear that the difference difference between two consecutive terms is increasing by 1. So, the next difference must be (8+1)=9.

Let the next number be x. Then,

[tex]x-11=9[/tex]

[tex]x=9+11[/tex]

[tex]x=20[/tex]

Therefore, the next number of the sequence is 20.

A 7.0 kg textbook is placed in a shelf 1.5 m high. What is the potential energy relative to the floor?

Answers

Answer:

PE = 102.9 Joules

Step-by-step explanation:

PE = mgh

= (7.0 kg)(9.8 m/s^2)(1.5 m)

= 102.9 Joules

A high school will only offer a pottery class next year if at least 15 students sign up. So far, 9
students have signed up for the pottery class.
Let x represent how many more students need to sign up. Which inequality describes the
problem?
9 + X > 15
9 + x 2 15
Solve the inequality. Then, complete the sentence to describe the solution.
At least
more students need to sign up.

Answers

9 + x > (equal to or greater than) 15
6 more students need to sign up because 15-9=6

9+x≥15 is the inequality describes the problem and 6 more students should be added to the pottery class.

What is Inequality?

a relationship between two expressions or values that are not equal to each other is called 'inequality.

Given that a high school will only offer a pottery class next year if at least 15 students sign up.

9 students have signed up for the pottery class.

Let x represent how many more students need to sign up.

9+x≥15

9+x≥15 is the inequality describes the problem.

Subtract 9 from both sides

x=15-9

x=6

So 6 more students should be added to the pottery class.

Hence, 9+x≥15 is the inequality describes the problem and 6 more students should be added to the pottery class.

To learn more on Inequality click:

https://brainly.com/question/28823603

#SPJ2

BRAINLIEST TO CORRECT ANSWER! NO links as answers, or you will be reported! (question 12)

Answers

Answer:

Factor numerator and denominator

Step-by-step explanation:

To get from home to work, Felix can either take a bike path through the
rectangular park or ride his bike along two sides of the park.

How much farther would Felix travel by riding along two sides of the park
than he would by taking the path through the park?
F 1.7 mi
G 0.6 mi
H 2.5 mi
J 0.1 mi

Answers

Answer:

h its h :)

Step-by-step explanation:

i

The coordinate plane shown below shows the locations of the library and park in the town where Rasheed lives.
Which expression represents the distance from the library to the park as modeled on the coordinate grid?


A. 5 + 3


B. 5 + -3


C. 5 - -3


D. -5 - -3

Answers

Answer:

C

Step-by-step explanation:

Solve this equation 4n+3= 4n-2 by graphing

Answers

Answer:

no solution

Step-by-step explanation:

Graph each side of the equation. The solution is the x-value of the point of intersection.

Which expression is equivalent to 17s-10+3(2s+1)?
O 23s-9
O 23s-7
O 11s-7
O 11s-9

Answers

Answer:

23s-7

Step-by-step explanation:

17s-10+3(2s+1)

17s-10+6s+3

23s-7

What is the volume of this sphere
Use π=3.14 and round your answer to the nearest hundredth

Answers

The answer is 523.6 and all you have to do is round it to the nearest hundredth

What is the square root of 49/900

Answers

0.00777777777 I think

The square root of 49/900 is 7/30 according to the given question, it can be done through simplification process.

To find the square root of 49/900, we can simplify the fraction first:

The square root of a number is a mathematical operation that determines a value which, when multiplied by itself, yields the original number. In simpler terms, the square root of a number "x" is the value "y" such that y multiplied by y equals x. The square root is denoted by the radical symbol (√).

49/900 = [tex](7^2)/(30^2)[/tex]

Taking the square root of the numerator and denominator separately, we get:

√ [tex](7^2) /[/tex]√([tex]30^2[/tex])

Simplifying further, we have:

7/30

Therefore, the square root of 49/900 is 7/30.

To know more about  square root here

https://brainly.com/question/428672

#SPJ2

Other Questions
George Washington and other Founding Fathers feared that the formation of political parties would __________.A.increase government efficiency and effectivenessB.create factions with self-seeking interestsC.strengthen the development of political debateD.broaden the scope of government influence Read the excerpt from The Mother of America:Martha Washington's promotion of democratic values as America's original first lady also proved her worthy of the name "Mother of America." She realized that the way she treated the role of first lady would set precedents for future women. Martha had to figure out how to create an atmosphere that reflected democracy and commanded respect from the rest of the world. To accomplish this, she held a reception once a week where different people could enjoy refreshments and exchange ideas. Unlike other events, Martha's reception was representative of democracy, as it was open to different groups of people, including both men and women. Overwhelming respect for Martha led to others calling her "Lady Washington." Despite praise for her work, Martha disliked the restrictions put on her as the first lady and missed her son. In spite of these concerns, Martha did her duty and remained to support the president and her country. Her role in defining America's first ladythe figurative "Mother of America"was invaluable.Indeed, Martha Washington's roles as first lady and general's wife revealed her nurturing nature and her promotion of democratic values, making her a prime candidate for the honorable title "Mother of America."Which of the following passages best summarizes the point and second reason of The Mother of America?a. Martha understood that she would be setting the standard for future first ladies. As a result, she held receptions that encouraged people from different walks of life, including women, to discuss ideas, which was very unusual for that time. Martha attempted to establish a democratic tone that also invited respect from other nations. She missed her son greatly but continued to fulfill her duties as first lady and representative of America.b. Martha Washington could be considered the "Mother of America" for her devotion to democratic values as the first lady. She understood that she would be setting the standard for future first ladies. As a result, she held receptions that encouraged people from different walks of life, including women, to discuss ideas, which was very unusual for that time. The original first lady's success at incorporating democratic values proved that she was the "Mother of America."c. Martha Washington could be considered the "Mother of America." She stayed to help her husband even though she hated life in the public eye. She missed her son greatly, but she insisted on staying. She also realized that the way she treated the role of first lady would set precedents for future women. 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