What are the solutions of each equation?
a. x2 + 4 = 4
b. x2 + 16 = 0
c. x2 − 49 = 0

Answers

Answer 1

Answer:

a. x=0

b x=-8

c x=49/2

Step-by-step explanation:

a. x2+4=4

subtract 4 from both sides

x2=0

multiply

2x=0

divide by 2

x=0

b x2 + 16 = 0

multiply

2x+16=0

subtract both sides by 16

2x=-16

divide by 2

x=-8

c  x2 − 49 = 0

multiply

2x-49=0

add 49 to both sides

2x=49

divide both sides by 2

x=49/2

Answer 2

Answer:

a. X= 0

b. X= undefined or X=4i

c. X= + or - 7

Step-by-step explanation:

a. x² + 4 = 4

when 4 goes to the other side by negative sign it will cancel the other 4. at they equal in magnitude and opposite in sign.

then x² = 0 , where √x²=√0 , finally x=0

b. x² + 16 = 0

16 goes to other side by negative sign too

x² = -16 , where √x²=√-16 , finally x= undefined

due to the negative sign under thr square root.

at √-1 = i then x can be 4i

c. x² - 49 = 0

-49 go to the other side by positive sign

x² = 49 , where √x² = √49 , finally x= + or - 7

where negative sign is neglected at even power

example:

(-7)²=(7)²


Related Questions

28% of the people that went through the Chick-Fil-A drive-through did not order a drink. What percent ordered a drink?

Answers

Answer:

72%

Step-by-step explanation:

100% - 28% = 72%

Most complicated and written out explanation for 1 plus 1 can get 20 points and brainliest.

Answers

Answer:

looking at the equation one plus one we see there can be many answers for example we can take one plus ine and change it to a number of different questions including but not limited to 1+1 1-1 1/1 1x1 1^1 etc looking at other results we can then determine tat 1+1=2 all though alternative answers could be present

Step-by-step explanation:

Someone please help me

Answers

Answer:

mark this as brainilest8rjf84g54gjfiuvjn

Step-by-step explanation:

rhjvgiu85hhbvjnwudw4

Answer:

Square

Step-by-step explanation:

137 divided by 3,562 pls help meeeee

Answers

Answer:

26

Step-by-step explanation:

Answer:

0.039 but u might wanna put the other way around which is 26

Complete the statements below
1)25% of the results from November show a flow of water greater than....m^3/s.
2)Both the lower quartiles and medians were the same in the months of.......

Answers

Answer:

c) (i) 33

Step-by-step explanation:

Jonas has been saving for a video game. Last year it cost $28. This year it cost $36. Find the percent of change in the cost. Round to the nearest whole percent if necessary.

Answers

Answer:

28.57%

Step-by-step explanation:

Given data

Initial cost =$28

Final cost =$36

Required

The percentage change in cost

Percent change =final - initial/initial*100

Substitute

Percent change =36-28/28*100

Percent change =8/28*100

Percent change =0. 2857*100

Percent change =28.57%

Find the missing length

I WILL GIVE BRAINLIEST

Answers

Answer:

36+36+18=90. 90-60=30-6=24

30+30=60

5. Find the solution to the equation 3x+4=31? EXPLAIN how you found your 2 points
answer. *

Answers

Subtract 4 from both sides

3x= 31-4
3x= 27

Divide both sides by 3 so x will be by itself. 27 divided by 3 is 9 so x=9

Please i need help asap

Answers

D. Should be correct.
D is correct answer

A surfer is riding a 7 foot wave. The angle of depression from the surfer to the shoreline is 10 degrees. What is the distance from the surfer to the shoreline

Answers

Step-by-step explanation:

The distance from the surfer to the shoreline will be found as follows:

tan θ= opposite/adjacent

θ=10°

opposite=7ft

adjacent= x ft

substituting the values in our formula and solving for x we get

tan 10=7/x

hence

x=7/tan10

x=39.69897~ 39.7 ft

The surfer is 39.7 ft from the shoreline.

Answer:

The surfer is 39.7 ft from the shoreline.

Step-by-step explanation:

NEED HELPP CORRECTT ANSWERS AND WILL GIVE THANKS AND MARK BRAINLIST ONLY FOR CORRECT ANSWER

Answers

Answer:

(16,60)

Step-by-step explanation:

help please l......................................

Answers

Answer:

yo mom

Step-by-step explanation:

5,25,125 find 10th term

Answers

Answer:

9765625

Step-by-step explanation:

There is a common ratio between consecutive terms , that is

r = 25 ÷ 5 = 125 ÷ 25 = 5

This indicates the sequence is geometric with n th term

[tex]a_{n}[/tex] = a₁[tex]r^{n-1}[/tex]

where a₁ is the first term and r the common ratio

Here a₁ = 5 and r = 5 , then

a₁₀ = 5 × [tex]5^{9}[/tex] = 5 × 1953125 = 9765625

What is 124% of 20? Pls help meeeeeeee

Answers

Answer:  24.8

Step-by-step explanation: Hope that helps

What is the value of f(-2) when f(x) = 2x2−3x+28

Answers

Answer:

f(x)=x−4x2−3x−28 f ( x ) = x - 4 x 2 - 3 x - 2 8 .

Step-by-step explanation:

Answer:

f(-2) = 42

Step-by-step explanation:

Given function:

f(x) = 2x²−3x + 28

Find f(x) when x = -2

f(-2) = 2(-2)² - 3(-2) + 28 = 2(4) + 6 + 28 = 42

A rectangular prism that is 30cm. long, 20 cm. wide and 10 cm.

Answers

Answer:

If you are looking for volume, it would be 6,000 cm cubed

Step-by-step explanation:

Answer:

6000cm.

Step-by-step explanation:

Volume = Base × h

Base = L × width

Base = 20cm × 10cm

Base = 200cm

Volume = 200cm × 30cm

Volume = 6000cm.

Hope this helps you!

Evaluate each expression If X equals six 4(x-5)

Answers

Answer:

4

Step-by-step explanation:

Let us plug x in to the equation given that it equals 6.

4(6-5)=

4*1=

4

Hope this helps! :)

How much would x dollars earn in 1 year at a rate of 5% compounded annually?

Answers

It would just earn .05x...just 5% of x at the end of the year.

simplify fully - check picture​

Answers

Answer:

e/f

Step-by-step explanation:

cut out the same variables

Step-by-step explanation:

e×f/f×f

I hope this helps leave a heart

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Answers

Answer:

[tex]x\% \: of \: 68 = 17 \\ \frac{x}{100} \times 68 = 17 \\ \frac{x}{100} = \frac{17}{68} \\ \frac{x}{100} = \frac{1}{4} \\ x = \frac{100}{4} \\ \boxed{x = 25\%}[/tex]

25% of 68 is 17.
17 is 25% of 68! hope this helps.

Find each product. Use patterns
9x101 =
9 x 102 =
9 x 103
9 x 104
9 10
9x102
9 x 103
9 x 104

Answers

9x101= 909
9x102=918
9x103=927
9x104=936

A rectangular prism with a length of 22 meters a width of 18 meters and a height of 10 meters
A) 3247 sq.m
B) 2563 sq.m
C)1592 sq.m
D) 1789 sq.m

Answers

Answer:

the answer is 1240

Step-by-step explanation:

1st you have to find the area of each surface and then add all the numbers together

(22x10)+(22x10)+(22x10)+(22x10)+(18x10)+(18x10)

then solve

220+220+220+220+180+180

1240

2.
X
6
6
What fraction will make the equation above true?
4
A.
1
B
2.
1
4
6

Answers

Answer:

What the english?

Step-by-step explanation:

bdhznrbzjdnxhenaFjskrnx

Which inequality is equivalent to this one? I WILL GIVE BRAINLEIST

y minus 8 less-than-or-equal-to negative 2
y minus 8 + 8 greater-than-or-equal-to negative 2 + 8
y minus 8 + 8 less-than negative 2 + 8
y minus 8 + 2 less-than-or-equal-to negative 2 + 8
y minus 8 + 2 less-than-or-equal-to negative 2 + 2

Answers

Answer:

y minus 8 + 2 less-than-or-equal-to negative 2 + 2

Step-by-step explanation:

Which inequality is equivalent to this one?

y minus 8 less-than-or-equal-to negative 2

y minus 8 + 8 greater-than-or-equal-to negative 2 + 8

y minus 8 + 8 less-than negative 2 + 8

y minus 8 + 2 less-than-or-equal-to negative 2 + 8

y minus 8 + 2 less-than-or-equal-to negative 2 + 2

Take the last option:

y minus 8 + 2 less-than-or-equal-to negative 2 + 2

remove the +2 on each side to get

y minus 8 less-than-or-equal-to negative 2

$35 bill before tax
tax:5.8%
Tip:21%

Answers

Answer:

If tip goes only on amount but not on tax: $44.38

If tip goes on total including tax: $44.81

Step-by-step explanation:

If the tip is applied to the price before tax, then we need to add 5.8% and 21% of $35 to $35.

tax + tip = 5.8% + 21% = 26.8%

100% + 26.8% = 126.8% = 1.268

1.268 * $35 = $44.38

If the tip is applied to the price plus tax, then we calculate the amount including tax first, then we add the 21% tip based on that price.

Bill before tax: $35

Add 5.8% tax: 1.058 * $35 = $37.03

Add tip to the amount including tax: 1.21 * $37.03 = $44.81

Phthagorean therom:
Explain and Solve following questions

Answers

Answer:

a squared plus b squared = c squared

Step-by-step explanation:

a) 100

b) 153

Honestly I'm just guessing i'm only in algebra 1 and even if i wasn't I suck at geometry

Answer:

10,11.62

Step-by-step explanation:

a= 10

b= 11.62

i took the same test

Farmer Janet can plant 9 feet of carrots in 15 minutes while her daughter Amy can plant 17 feet of carrots in half an hour. Which farmer plants carrots more quickly?

Answers

Answer:

Farmer Janet can plant carrots more quickly.

Step-by-step explanation:

If we added 15 more minutes to Farmer Janet's time to equal the same amount as her daughter. We would also have to double the amount of carrots she can plant which totals out to 18 carrots which is 1 more carrot more than her daughter. I hope this helps:)

Jamal ordered 4 pizzas. how many slices of pizza did Jamal order if each slice is 1/8 of a pizza? Please, Model!!!

Answers

Answer:

32 slices

Step-by-step explanation:

as each slice is 1/8 of pizza, there are 8 slice on each pizza

as such 4 pizzas will have 4*8=32

HELP! THIS IS DUE IN 5 MINUTES

How do you plot an ordered pair on a coordinate plane?

Answers

Answer:

(x,y)

Step-by-step explanation:

You do x axis first then y axis

Answer:

coordinates are paired as (x,y) and there are designated lines that are x and y. in order to plot the x value on the horizontal line (side to side) then go up or down however many per y value. if the coordinates are (4,5) then go over 4 positive, and go up 5 positive. if the pair is (-3,-6) then go left to -3, then down to -6. hope this makes sense and helps you ;]

The. Ordered pair?

Is this a function yes or no?

Answers

Yes. It is a function I don’t know why but I know it is
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