Mathematics College

Which equations can be best solved with the square root method?

Select each correct answer.

x2−100=0
(x−6)2=25
x2−11x=−28
x2−10x+24=0

Answers

Answer 1

Answer:

The first two equations.

Step-by-step explanation:

The first equation:

x² - 100 = 0

x² = 100

√x² = √100

x = ±10

x = 10 or -10

Second equation:

(x - 6)² = 25

√(x - 6)² = √25

x - 6 = ±5

x - 6 = 5 or x - 6 = -5

x = 11 or 1

It seems that for the other two equations, you have to complete the square and factor them out.

Related Questions

Stephanie bought a chair for $124.00. The finance charge was $24 and she paid for it over 12 months. (Finance Charge: #Months)(12) Use the formula Amount Financed calculate her approximate APR. Approximate APR to Round the answer to the nearest tenth.

O 20.5%
O 19.4%
O 1.6%
O 1.5%​

Answers

Anwers

20.5%

step by step

The answer is 20.5%.......

What is 2/3 of 3/4 equal to

Answers

Answer:

3/4 Is equal to .74 and 2/3 is equal to 66.67

Step-by-step explanation:

Answer:

8/9

or

89% after being rounded to the nearest whole

Step-by-step explanation:

The connotation "of" means to divide to find the percent/part of the whole.

2/3 ÷ 3/4 = 2/3 x 4/3 = 8/9 = 0.88....

So it is either 8/9, or 89% (when rounded)

If gas costs $3.15 per gallon, how many whole gallons of gas could you buy with $27.00? ​

Answers

Answer:

the answer is 9

Step-by-step explanation:

i used a caculator

Simplify the sum. (8u^3+8u^2+6)+(4u^3-6u+3)​

Answers

Answer:

[tex]\boxed{12u^3+8u^2-6u+9}[/tex]

Step-by-step explanation:

[tex](8u^3+8u^2+6)+(4u^3-6u+3) = 8u^3+8u^2+6+4u^3-6u+3[/tex]

Once

[tex]8x+4x = 12x, \text{ as } x = u^3[/tex]

[tex]8u^3+8u^2+6+4u^3-6u+3 = 12u^3+8u^2+6-6u+3 = \boxed{12u^3+8u^2-6u+9}[/tex]

You don't need to factor.

does 10,15,18 form an acute triangle

Answers

it does not because 10,15,18 all make a 43 degree angle

Step-by-step explanation:

Yeah, 10°+15°+18°=43°

Also, they individually are less than 90° so yes

How many seconds are in m minutes?

60 + m seconds
60 m seconds
60/m

Answers

60 seconds so it would be 60 times m minutes

Answer: 60 times m seconds

Note:

The answer choices say m seconds, not minutes.

evaluate in the following expression when x = 4 and y = 5​

Answers

Fraction with x squared plus y cubed in the numerator and 2 plus x in the denominator.
3.8
14.83
19.58
23.5

For the function f(x)=−x2+x−7, find f(1)

Answers

Answer:

f(1)= -(1)2 + (1) -7

f(1)= -1+1-7

f(1)= -7

Step-by-step explanation:

when you substitute 1 in the function it doesn't carry the negative sign it's independent

state cauchy's integral formula ​

Answers

Answer:

Step-by-step explanation:

The Cauchy integral formula states that the values of a holomorphic function inside a disk are determined by the values of that function on the boundary of the disk. More precisely, suppose f : U → C f: U \to \mathbb{C} f:U→C is holomorphic and γ is a circle contained in U.

Mr. Williams asks to buy 12 of a pan of brownies that is 23 full.

Answers

Answer:

10 i think thats not really a questuon tho

11 cause I'm pretty sure it's 23 - 12 which is 11

Out of what material did coal form?

Answers

Answer:

Coal is formed of carbon.

Write the inequalities in numerical form: Use N as your variable
3 more than a number is greater than 27

Answers

Answer:

n+3>27

Step-by-step explanation:

3 more, so add 3. greater symbol with 27 on the side.


In a class of the students in a class are girls.
There are 28 boys.
What fraction of the class are boys?
How many students are in the class?

Answers

Answer:

[tex]Boys = 1 /4[/tex]

[tex]Total =112[/tex]

Step-by-step explanation:

Given

[tex]Girls= 3/4[/tex] ---  missing information

[tex]Boys = 28[/tex]

Solving (a): The fraction that are boys

We have:

[tex]Girls= 3/4[/tex]

This implies that

[tex]Boys = 1 - Girls[/tex]

[tex]Boys = 1 - 3/4[/tex]

[tex]Boys = 1 /4[/tex]

Solving (b): Students in the class

If 1/4 are boys, then:

[tex]Boys = \frac{1}{4} * Total[/tex]

We also have that: [tex]Boys = 28[/tex]

So:

[tex]28= \frac{1}{4} * Total[/tex]

[tex]28 * 4 = Total[/tex]

[tex]112= Total[/tex]

[tex]Total =112[/tex]

what is the area of this triangle?​

Answers

Answer:

48

Step-by-step explanation:

Area of a triangle is 1/2(base*height)

Plug in:

1/2(6*16)

1/2(96)

48

Answer: 1,600 cm

~ i really hope that this is correct, have a gr8 day my friend!~

Step-by-step explanation:

I need help with this problem I'll give brainlist to whoever answers it right

4+2×3²-9​

Answers

Answer:

The answer for  4+2×3²-9​ is 13

Step-by-step explanation:

4+2×3²-9​=13

Answer:

4+2×3-9 i think forgot

Step-by-step explanation:

Anyone can help please

Answers

I haven't done this in a while but I'm pretty sure the answer is

D; The outlier

Answer:

D - outlier

Step-by-step explanation:

It can’t be A - the spread would the minimum and maximum.

‘Can’t be B - the mean in the overall average, which would probably be a bit higher than 13

Can’t be C - the median is the “middle” number when ordered smallest to largest. It would be 13 in this example

24 is an odd number compared to the rest. It seems like it might be an error in the data, because it is so different than all the rest - hence it is the outlier.

three years back , a father was 24 years older than his son .at present,the father is five times as old as the son.how old will the son be three years from now?

​

Answers

Answer:

The son is 5 I think

Step-by-step explanation:

24+3=27

27 divided by 5 = 5.4

round 5.4 to 5 since it is under .5

and you get 5

Point Z is at a horizontal distance of 15 meters from the left- most point of the dam . What is the height of the dam at point Z?

Answers

Complete Question:

The profile of a dam is modeled by the equation y = 24 (StartFraction x Over 10 EndFraction) squared, where x represents horizontal distance and y represents height, both in meters.

Point Z is at a horizontal distance of 15 meters from the left-most point of the dam. What is the height of the dam at point Z?

Answer:

The height is 36 meters

Step-by-step explanation:

Given

[tex]y = 24 * \frac{x}{10}[/tex]

Required

The interpretation of the question is to determine the value of y when x = 15

Substitute 15 for x in: [tex]y = 24 * \frac{x}{10}[/tex]

[tex]y = 24 * \frac{15}{10}[/tex]

[tex]y = 24 * 1.5[/tex]

[tex]y = 36[/tex]

The height is 36 meters

Answer:

54

Step-by-step explanation:

edge

Please please help
Think of your own statistical question and write it below:

Answers

Answer:

this will help u because my teacher just telled  us about a statistical question

Step-by-step explanation:

The purpose of this task is to help students learn to distinguish between statistical questions and questions that are not statistical. A statistical question is one that can be answered by collecting data and where there will be variability in that data. This is different from a question that anticipates a deterministic answer.

hope that help

John bought 27.5 m of cloth. How many centimetres of cloth did he buy ?​

Answers

Answer:

2750

Step-by-step explanation:

It is 2750 because there is 100cm in 1m, which means if you do 27.5 times 100 you will then get the answer of 2750.

the sum of half a number, n, and 15 is 24. what is the vaule of the number n

Answers

Answer:

n = 18

Step-by-step explanation:

n/2 + 15 = 24

n/2 = 9

n = 18

What is the slope of the line below?
(-1,5)
(12,-1)
A. undefined
B. zero
C. negative
D. positive

Answers

Answer:

Positive

Step-by-step explanation:

This shape has been made from two identical triangles

Answers

Answer:

square or rectangle

Step-by-step explanation:

Racer's average driving speed
for a 4-hour trip was 45 miles per
hour. During the first three hours he
drove 40 miles per hour. What was his
average speed for the last hour of his
trip?
A 70 miles per hour
B. 60 miles per hour
C. 50 miles per hour
D. 65 miles per hour

Answers

Answer:

the answer is C.

Step-by-step explanation:

(50+40)/2=45

Answer:

so to average 45mph for 4 hours, he had to drive 4x45 miles total

4x45= 180miles

now we know he drove 120 miles (3x40) in the first 3 hours.

so he drove 180-120= 60 miles in the last hour.

60mph

i dont understand it

Answers

The answer is 3,6 ok

Price of one CD after February discount $
Price of one CD after March markdown $
After both discounts were taken separately
60% off the regular price?
Explain why the application of two separ
discount of 60%

Answers

Answer:

vssguudgebseisiehjejsieheusssushsbddjdhfbbfjfjfnfnfnfnfnnfjfngjfjfjfjfjfjfjfjf

Tammy ran 4 & 2/5 miles on Saturday. On Sunday she ran for 1/2 of the distance she
ran on Saturday.
Tammy ran Sunday.

Answers

Answer:

I need help right now with math

Step-by-step explanation:

Answer:

4 2/5 × 1/2= 2 1/5 / 2.2 miles

Step-by-step explanation:

hope this helps.

13,5,11,8,14,15

please find the median!!

Answers

Answer:

The answer is twelve :)))

Answer:

12

Step-by-step explanation:

Pls help me someone

Answers

Answer:

cos(49) = x/50

Step-by-step explanation:

(The answer to the equation is 32.8)

What is the first step you would take to solve the equation shown?

4 + 4n = -12

1. Add 4

2. Subtract 4

3. Multiply by 4

4. Divide by 4​

Answers

first step is to subtract 4
2. Subtract 4

Step by Step explanation
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