Answer:
x = ± i, x = ± [tex]\sqrt{2}[/tex]
Step-by-step explanation:
Given
- 2[tex]x^{4}[/tex] + 2x² + 4 = 0 ( divide through by - 2 )
[tex]x^{4}[/tex] - x² - 2 = 0
Use the substitution x² = u , then
u² - u - 2 = 0 ← in standard form
(u - 2)(u + 1) = 0 ← in factored form
Equate each factor to zero and solve for u
u - 2 = 0 ⇒ u = 2
u + 1 = 0 ⇒ u = - 1
Change back into terms of x, that is
x² = 2 ( take the square root of both sides )
x = ± [tex]\sqrt{2}[/tex]
x² = - 1 ( take the square root of both sides )
x = ± [tex]\sqrt{-1}[/tex] = ± i
x = ± [tex]\sqrt{2}[/tex] ← real solutions
x = ± i ← complex solutions
Solve the equation 6+2x=20
10 points!!!
Answer:
x=7
Step-by-step explanation:
2x=20-6
2x=14
x=14/2
x=7
Please help need it asap!!!!!
Answer:
A. 6.89 m
Step-by-step explanation:
Pythagorean Theorem.
a^2+b^2=c^2
(1.5)^2 + (3.6)^2 = c^2
2.25 + 12.96 = 15.21
√15.21= 3.9
find the ratio from the the left triangle to the other -
2.65÷1.5= 1.766666 × 3.69 = 6.89
Hi, may I get some help?
Answer:
First add the number of bags. Then make sure you the percent of the total of each weight.
Step-by-step explanation:
if you rlly want to know the answer its
4+10+20+24+18+6 bags is 82
4 is 4.8 percent of 82
10 is 12.1 percent of 82
20 is 24.3 percent of 82
24 is 29.2 percent of 82
18 is 21.9 percent of 82 and
6 is 7.3 percent of 82
so answer a is 40 pounds and less
29.2+24.3+12.1+4.8=70.4 percent so its wrong
so answer b is wrong too
answer c is 29.2+21.9+7.3=58.4 so its right but we have to check d
answer d is 4.8+12.1=16.9 so its wrong
THE ANSWER IS C
and may i pwetty please have brainly crown
the area of a small square is 25 square units what is the exact length in units of a single of a large square
Answer:
5
Step-by-step explanation:
The area of any quadrilateral can be determined by multiplying the length of its base by its height. Since we know the shape here is square, we know that all sides are of equal length. From this we can work backwards by taking the square root of the area to find the length of one side.
A girl's club held a fundraiser last year and raised $600 for the local soup kitchen. This year they raised $960. What is
the percent change in the total amount raised by the girl's club?
The percent change is 0.38%.
O The percent change is 0.6%.
The percent change is 38%.
The percent change is 60%.
Answer:
60%
Step-by-step explanation:
Need help ASAP!!!! :)
Answer:
B. All real numbers
General Formulas and Concepts:
Algebra I
Domain is the set of x-values that can be inputted into function f(x)Step-by-step explanation:
According to the graph, we see that the line's x-values span from negative infinity to infinity. Therefore our domain encapsulates all real numbers.
Sam and Taylor own and operate a car wash service. Sam cleans the interior of each car and Taylor cleans the exterior. The time it takes Sam to finish the interior has a mean of 20 minutes with a standard deviation of 6.4 minutes. The time it takes Taylor to finish the exterior has a mean of 18 minutes with a standard deviation of 4.8 minutes. Both of their finishing times are approximately normally distributed.
Suppose we select a car at random, and define the random variable D as the difference between their finishing times. We can assume that their times are independent.
Find the probability that they finish within 10minutes of each other.
You may round your answer to two decimal places.
P\left(|D|<10\right)\approxP(∣D∣<10)≈P
Answer: 0.77
Step-by-step explanation:
Khan academy answer
I need help can someone help please !!
The price of milk increased from $2 to $2.50.What is the percent of the change for the price of the milk.
Answer:
20%
Step-by-step explanation:
im just built different
need help on these thank you if you do
PLEASEE SOMEONE ANSWER ILL DO ANYTHING ANYTHING PLEAASEEE HELP ME this is myh 6th time posting this ;[
Answer: the third one
Step-by-step explanation:
It took azul 1.75 hours to bike the blue mountain trail. azul averaged 12.5 miles per hour. what is the best estemate for the length of the trail
Answer:
21.875 Miles
Step-by-step explanation:
If azul averages 12.5 miles per hour, we can multiply the time it took azul to bike up the mountain trail times the distances per hour
A fish tank that holds 80 gallons of water is 55% full. How many gallons are
in the tank now? PLZ HELP
55% of the fish tank is 44 gallons.
Step-by-step explanation:To solve this, you turn the 55% into a decimal, by dividing it by 100.
55 ÷ 100 = 0.55
You then multiply the whole capacity (80) by 0.55
80 x 0.55 = 44 gallons
The Sloan family stayed in a hotel room for 6 nights while on vacation. The total cost before tax was $1,170. If the hotel room tax rate in the city is 12%, what was the total cost for the hotel room?
Answer:
Total cost for the hotel room is $1310.4
Step-by-step explanation:
The total cost before tax was $1170.
The tax rate is 12%.
So, tax paid = 12%(1170)
Convert 12% to decimal. We get 12% as 0.12
So, tax =0.12*1170 =140.4
So, total cost for the hotel room = $140.4 +$1170 =$1310.4
Ms. Guthrie spent 80% of her cash on gifts.
What fraction of her cash did she spend on gifts?
She spent type your answer...
of her cash on gift.
Answer:
She spend (8/10) or (4/5) of her cash on gift.
Step-by-step explanation:
4/5 is simplified.
but not simplified its 8/10
plz help me asap plz i will mark you as brainlist
Answer:
$420
Step-by-step explanation:
130x12=1560
165x12=1980
1980-1560=420
Answer:
$420
Step-by-step explanation:
The last rate was $165, and the new one is $130. To find the difference, do this equation, 165-130=?. From that equation, you get $35. As you know, there are 12 months in a year, so you multiply $35 by 12 to get $420. There is your answer.
What steps are needed to plot another point on this graph of equivalent ratios?
Help me find the slope please
At every company meeting, the president speaks for 28 minutes and then takes questions from her employees. Let q represent the number of minutes she spends answering questions and t represent the total number of minutes the meeting lasts.
Answer:
t = 20 + q in minutes
Step-by-step explanation:
Company meeting = president speech + questions + answers
President speech = 20 minutes
Questions and answers = q minutes
Total time spent = t minutes
Total time spent = President speech + Total time spent
t = 20 + q
The equation that represents the relationship between q and t is
t = 20 + q in minutes
which statement is always true regarding the diagram
please hurry this is Algebra 1!!!
Answer: A
[tex]256a^{20} b^{24}[/tex]
(MC) Rewrite the rational exponent as a radical. (2 points) 5 to the 3 over 4 power, to the 2 over 3 power Select one: a. The cube root of 5 squared b. The twelfth root of 5 c. The square root of 5 d. The cube root of 5 the fourth power
Answer:
[tex]\sqrt{5}[/tex]
Step-by-step explanation:
Given the expression;
[tex](5^{\frac{3}{4} })^{\frac{2}{3} }[/tex]
Using the law of indices that states;
[tex](a^m)^n = a^{mn}[/tex]
The expression becomes;
[tex](5^{\frac{3}{4} })^{\frac{2}{3} }\\= (5^{\frac{3}{4} \times \frac{2}{3} })\\= 5^{6/12}\\= 5^{1/2}\\= \sqrt{5}[/tex]
Hence the correct answer is [tex]= \sqrt{5}[/tex]
i need some help please
Answer:
the answer is c 10 chicken and 32 cow
If f(x) = 3x + 2, what is f(5)?
Answer:
17
Step-by-step explanation:
f(x) is the same as y=. "What is f(5)" is the same as saying what is y=3x + 2 when x is 5.
Either way, you are going to replace x with is numerical value, which is 5, and then solve.
y = 3(5) + 2
y = 15 +2
y = 17
f(5) = 17
Which equation is modeled below?
2x+(-2)=-2x+6
4x+(-2) = -2x+6
2x+4= 6x+ 2
-2x+4 - 6x+(-2)
Answer:
4x + (-2) = -2x + 6
Step-by-step explanation:
green x represents positive x and red x represents negative
and the same thing for ones but yellow is positive
Answer:
4x + (-2) = -2x + 6
Step-by-step explanation:
green x represents positive x and red x represents negative
and the same thing for ones but yellow is positive
if i helped can i havae brainllest ❤️
Just curious what is 52 x 34 - 342
Answer:
1426
Step-by-step explanation:
52 x 34 = 1768
1768 - 340 = 1426
A 10-ft ladder leans against the side of a house. The bottom of the ladder is 7 from the side of the house. How high is the top of the ladder from the ground?
If necessary, round your answer to the nearest tenth
If an elephant weighs more than 2000 pounds, then it weights more than 5 refrigerators.
If something weighs more than 5 refrigerators, then it is too heavy for the elevator.
Salty weighs 2150 pounds.
Answer:
If it were asking if Salty was able to go on the elevator the answer is no.
Step-by-step explanation:
Find the slope of the line in the image.
someone plz helpppp
Answer: The answer I got is -2/4 Hope this help :)
Step-by-step explanation:(-2,6)(2,4)
M=y2-y1
x2-x1
4-6 = -2
2-(-2) = 4
The slope is -2/4
Answer:
-1/2
Step-by-step explanation:
Because the line segment is going from left to right down it is negative. From the end point on the it goes down 1 and over 2 consistently.
PLs HELPPpppPPPppppPPp
13 points + brainliest pls help!!
Either send the answers or fill in the pdf using doc hub or pdf escape pls dont answer if u dont know this is really srs to me : )
Answer:
I could tell you that the fist second and third would be < > <
Step-by-step explanation: