Find the solutions to x2 = 28.
A. x = 14,2
O B. x = +2./14
O C. X = +2,7
O D. x = -7/2

Answers

Answer 1

Answer: [tex]x = \pm2\sqrt{7}\\\\[/tex]

Work Shown:

[tex]x^2 = 28\\\\x = \pm\sqrt{28}\\\\x = \pm\sqrt{4*7}\\\\x = \pm\sqrt{4}*\sqrt{7}\\\\x = \pm2\sqrt{7}\\\\[/tex]

This can be rewritten into [tex]x = 2\sqrt{7} \ \text{ or } \ x = -2\sqrt{7}[/tex]


Related Questions

2
Which is the equation of a line that has a slope of 3 and passes through point
(-3,-1)?
2
1o -+1
O y=-3x+1
O y=-x+3
O y=-x-1
=
O y=-x-3

Answers

Answer:

Step-by-step explanation:

We'll start with the slope intercept form of a straight line equation:

y = mx + b, where x is the slope and b the y-intercept.  The slope we are given is 3, so:

y = 3x + b

We need a value of b that will force the line to go through (-3,-1).  Do this by entering that point in the equation and solving for b:

y = -3x + b

-1 = 3(-3) + b

b = 8

y = 3x + 8

Lary works in a automobile company. They just shipped out 5 brand new cars. The total cost of these cars was $1,067,800. If they all cost the same amount,what was the price of each car ?
She your work.

Answers

You will have to divide 1,067,000 by 5.
1,067,000/5= 213,400 $ per each car

60 more boys than girls attended the school picnic. If at most 230 boys attended the picnic, how many girls attended?

Answers

Answer:

!70 girls

Step-by-step explanation:

230 - 60 = 170

hope this helps

Additive inverse of -0.5

Answers

Answer:

0.5

Step-by-step explanation:

If you add 0.5 to -0.5, it will equal 0.

Hey y’all please help me with this question.

Answers

Answer:

-g-8>9 answer

since g is -18 and we have (-)g we will have +18

+18-8+10

now we have 10 and it will be bigger the the 9.

Answer:

-g-8≥9

Step-by-step explanation:

Just ask!

Hope this helps.

Please help me evaluate f(x)=-52

Answers

Answer:

Axis interception points of -52 :

Y intercepts : (0,-52 )

Solve with elimination:
10a + 4b = 18
7a + 14 = b
solve for b

Answers

b=7a+14
Might help not sure if it’s correct
So first we want to plug in The equation for b

10a+4(7a+14)=18

(we use the distributive since we have 4 times of b)

when we solve it, we get a is -1

plug in -1 for a

7(-1)+14=7

b=7

plug it back in

10(-1)+4(7)=18

18=18

Hope this helps! :)

Answer the questions below to find the total surface area of the can. (55 points, help fast)

Answers

Answer:

Hope this helps

Step-by-step explanation:

first question --> area of circle ---> [tex]\pi r^{2}[/tex] ---> [tex]1.5^{2} \pi[/tex] ---> [tex]2.25\pi[/tex]

second question --> unclear quetion but I assume 4?

third question --> area of cylinder --> [tex]r^{2} \pi h[/tex] --> [tex]2.25\pi h[/tex] --> [tex]2.25\pi 4[/tex] --> [tex]9\pi[/tex]

h --> height

r --> Radius

[tex]\pi[/tex] --> pi

The total surface area of the can is 61.23 square inches

How to calculate the total surface area of a can

The formula for calculating the total surface area of a can is expressed as:

S = 2πr(r+h)

where:

h is the height

r is the radius

Given the following parameters

h = 5in

r = 1.5in

S = 2(3.14)(1.5)(1.5 + 5)

S = 6.28(1.5)(6.5)

S = 61.23 square inches

Hence the total surface area of the can is 61.23 square inches

Learn more on total surface area  here: https://brainly.com/question/16997207

What does geometric progression mean?

Answers

Step-by-step explanation:

[tex] \large\tt\underline\blue{a} \underline\pink{n} \underline\green{s} \underline\red{w}\underline \purple{e} \underline\orange{r}[/tex]

A geometric progression is a sequence in which any element after the first is obtained by multiplying the preceding element by a constant called the common ratio which is denoted by r.

I need some help with this question, can anyone help me?

Answers

Answer: IM only in midle school i think this is it 7(3e + 5)

Step-by-step explanation: f it is brainliest whe someone answers pls ps you next question ready

HELP ME WITH THIS PLEASEEE !

Answers

Answer:

  38.525 in²

Step-by-step explanation:

The area formula for a triangle is useful here.

  A = 1/2bh . . . . . . b=base length; h=height

  A = 1/2(11.5 in)(6.7 in) = 38.525 in²

The area is 38.525 square inches.

Find the value of x

Answers

Answer:

x = 16°

Step-by-step explanation:

[tex]3x + 46 + 93 + 47 + 4x + 62 + 3x = 360 \\ 7x + 248 = 360 \\ 7x = 360 - 248 \\ 7x = 112 \\ x = \frac{112}{7} \\ x = {16}^{o} [/tex]

Under her cell phone plan, Janelys pays a flat cost of $46.50 per month and $5 per gigabyte. She wants to keep her bill under $70 per month. Write and solve an inequality which can be used to determine g, the number of gigabytes Janelys can use while staying within her budget.

Answers

Answer:

Less than 4.70 GB

Step-by-step explanation:

Let x = # of GB that Janelys uses that month. Since Janelys wants to pay less than $70 given that the flat rate for subscribing to that company's data per month is $46.50 and each GB costs $5 to use, the inequality can be written as:

5x + 46.50 < 70

5x < 23.50                        Subtract $45.60 from each side.

x < 4.70 GB                       Divide 5 from each side.

Thus, (if it is whole numbers) Janelys can use 4 GB while staying within her budget or (if decimals are fine) anything less than 4.70 GB. Hope this helped! :D

Solve the following system: y = x 3 4x y = 18 (6, 3) (3, 6) (â’3, 6) (3, â’6).

Answers

The solution of the given equation is (3,6). The correct option is B.(3,6)

Given equations,

[tex]y=x+3.......(1)\\4x+y=18.....(2)[/tex]

How to solve the equations?

putting the value of y from equation (1) in equation (2) , we get

[tex]4x+x+3=18\\[/tex][tex]5x=18-3\\5x=15\\x=3[/tex]

substitute the value of x=3 in equation (1) we get,

[tex]y=3+3\\y=6[/tex]

Hence, the solution of given equation is (3,6).

So, the correct option is B.

For more details about the system of equations, follow the link:

https://brainly.com/question/12895249

How i can answer this question, NO LINKS, if you answer correctly i will give u brainliest!

Answers

Answer: 16:6

Count them all together you will get 16!

Can someone please help? :(

Answers

Answer:

with what?

Step-by-step explanation:

Answer:

what do you need help with :p

Step-by-step explanation:

20 POINTS!!
Solve the equations. √x^2-6x+9=3-x, √9x^2=12x+4=3x+2

The root is under all the numbers before the equal sign

Answers

Answer:

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

Exact Form:

x=3/2

Decimal Form:

x=1.5

Mixed Number Form:

x =1 1/2

A line passes through the points (0, 2) and (2, 10). What is its equation in slope-intercept form?

Answers

Answer:

y = 4x + 2

Step-by-step explanation:

The slope-intercept form:

y = mx + b, where m is the slope, b is the y-intercept

Find the slope using given points:

m = (10 - 2)/(2 - 0) = 8 / 2 = 4

The y-intercept is given with point (0, 2):

b = 2

The line is:

y = 4x + 2
(0,2)(2,10)

[tex]\\ \sf{:}\Rrightarrow m=\dfrac{10-2}{2-0}=\dfrac{8}{2}=4[/tex]

Put in slope intercept form

[tex]\\ \sf{:}\Rrightarrow y=mx+b[/tex]

[tex]\\ \sf{:}\Rrightarrow 2=4(0)+b[/tex]

[tex]\\ \sf{:}\Rrightarrow 2=b[/tex]

Equation of the line

[tex]\\ \sf{:}\Rrightarrow y=4x+2[/tex]

What is the location of point F, which partitions the directed line segment from D to E into a 5:6 ratio? Negative one-eleventh One-eleventh Two-fifteenths Fifteen-halves.

Answers

The location of point F, which partitions the directed line segment from D to E into a 5:6 ratio is [tex]\frac{1}{11}[/tex].

The given parameters:

Partition of the line segment = 5:6

The total segment of the directed line segment from D to E in the given ratio of 5:6 is calculated as follows;

total segment = 5 + 6 = 11

The value of each partition on the directed line segment is calculated as follows;

[tex]partition = \frac{1}{11} \times distance[/tex]

The distance between point D and point E is calculated as follows;

[tex]D = 5 - (-4)\\\\D = 5 + 4\\\\D = 9[/tex]

The partition of the two points (D to E) is calculated as follows;

[tex]partition = \frac{1}{11} \times 9 = 0.82[/tex]

Thus, we can conclude that, the location of point F, which partitions the directed line segment from D to E into a 5:6 ratio is [tex]\frac{1}{11}[/tex].

Learn more about partition of line segments here: https://brainly.com/question/4429522

Answer:

B

Step-by-step explanation:

edge2021

Write an inequality of the form Ax + B ≤ C to represent the word problem using your answers for A, B, and C. Solve the inequality and show your work.
a=8
b=10
c=60

Answers

b the answer is b bc c and a are wrong and it wouldn’t be correct

Your bill from Acme Supply Company is marked "3/15, net 30." The amount of the bill is $289.95. If you pay the bill within 15 days, how much should you tender?

Answers

Answer:

$8,698.50

Step-by-step explanation:

289.95x30= $8,695.50

6x-2 (x-5) = 46 what’s x

Answers

Answer:

x = 9

Step-by-step explanation:

6x - 2(x - 5) = 46 ← distribute parenthesis and simplify left side

6x - 2x + 10 = 46

4x + 10 = 46 ( subtract 10 from both sides )

4x = 36 ( divide both sides by 4 )

x = 9

What did the wall say to the bookcase 4. 2 puzzle time answers.

Answers

Answer:

meet you at the corner

Step-by-step explanation:

The round off value of 38.23 to the nearest whole number is?

Answers

Answer:

38

Step-by-step explanation:

38.23 is closest to 28, because neither the .2 or .03 is high enough to round the last whole number up

Answer:

Rounding 38.23 to the nearest whole number would be 38

Step-by-step explanation:

Rounding 38.23 to the nearest whole number would be 38 because the extra 0.23 is less than 0.50

If it was 0.50, the answer would go up to 39.

2
Lola is traveling to Florida and needs to rent a car. The charge is $22 per day and an additional $0.15 per mile. Lola only has $52 to spend. How many miles can she go?

Answers

Answer:

answer is in an image here

imageshare.best/image.php?id=JS9NDO

Explanation:

copy n paste in browser

not a bot btw

Assuming she only uses the car for one day 200 miles

52-22=30
30/0.15=200

(If she uses the car for more days do 22 x # of days and then subtract it from 52, then divide that answer by 0.15)

Please help me solve these problems ASAP

Answers

Answer:

imagine having this

Step-by-step explanation:

can't relate

just times by 2 k:)))))))))

Drag the numbers below to put them in order from least to greatest:
5.4
5.465
5.51
5.529
5.48
5.596

Answers

Answer:

5.4

5.465

5.48

5.51

5.529

5.596

Step-by-step explanation:

5.465 is 0.065 higher than 5.4

5.48 is 0.015 higher than 5.465

5.51 is 0.03 higher than 5.48

5.529 is 0.019 higher than 5.51

and 5.596 is 0.067 higher than 5.529

Round off to one decimal

5.4=5.4005.465=5.4655.51=5.5105.5295.4805.596

Order

5.400<5.465<5.480<5.510<5.529<5.596

x−6y=−13
7x+2y=41
find the x and y value

Answers

Answer:

X=5

Y=3

(5,3)

Step-by-step explanation:

Solve using substitution

What is the value of (225 ÷ 0.25) – 11.875 written to two decimal places.(2d.p.)​

Answers

888.125 is the answer just use your calculator

Answer:

Step-by-step explanation:

888.13

Channing jogs 10 miles a week. How many miles will she jog in 57 weeks?

Answers

Answer:

Simple! Multiply 57 by 10...

The answer is 570 miles in 57 weeks!

Answer:

570 miles per 57 weeks

Step-by-step explanation:

set a proportion;

10 miles x miles

----------- = ------------

1 week 57 weeks

57/1 = 57

10 x 57 = 570

x = 570

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