Answer:
C
Step-by-step explanation:
Given
x² - 2x + 2 = 0 ( subtract 2 from both sides )
x² - 2x = - 2
To solve use the method of completing the square
add ( half the coefficient of the x- term)² to both sides
x² + 2(- 1)x + 1 = - 2 + 1
(x - 1)² = - 1 ( take the square root of both sides )
x - 1 = ± [tex]\sqrt{-1}[/tex] = ± i ( add 1 to both sides )
x = 1 ± i , then
x = 1 + i or x = 1 - i → C
Please help.
Is algebra.
PLEASE HELP NO LINKS OR FILES.
I don't want links.
Answer:
6) -10
7) b
hope this helps :)
Susan has 12 pizzas that she needs to divide equally among 7 classrooms.
Which fraction shows how many pizzas each classroom should get?
Answer:
1 5/7
Step-by-step explanation:
12 ÷ 7 = 1R5, therefore, we have 1 whole and 5/7
Hope I helped
HELP YOU GET BRAINLIEST!! What is the cost of 8 shirts?!
Answer: B, 120
Step-by-step explanation:
look at x-value 8 and find y-value
Answer:
the cost of 8 shirts would be $120.
Step-by-step explanation:
if you go to the 8 on the bottom where it says "number of shirts" and you follow that line up to the blue dot and then over, you reach 120 on the side where it says "cost" so your answer would be $120.
A used-car salesperson purchased
a car for $4000 and sold it for 40%
more. What was the selling price of
the car?
Answer:
5,600 dollars he sold it for
Step-by-step explanation:
Basically if you cross multiply, you'll do 4,000 times 40. Then divide what you get from multiplying by 100, so do 160,000 divided by 100 in this case. Then when you get that 1,600, it isn't the final step. Lastly, you'll have to add 1,600 on to 4,000 to get the markup selling price. :)
A die is rolled twice. What is the probability of getting two even numbers?
Answer:
1/2
Step-by-step explanation:
During a recent storm, 1.7 inches of rain fell each hour. If the storm lasted for 4 hours, how much rain fell during the entire storm?
A 4.8
B 5.9
C 6.3
D 6.8
Answer:
D) 6.8 inches
Step-by-step explanation:
1.7 x 4 = 6.8 inches
42 = 7 ( x + 5 ) solve for x
Answer:
x = 1
Step-by-step explanation:
Answer:
1
Step-by-step explanation:
1. distribute 7 to x and 5.
42 = 7x + 35
2. subtract 35 on both sides.
7 = 7x
3. Divide by 7 for both sides.
1 = x
Isaac has three types of coins in his pocket. There are two more quarters than dimes, and as many nickels as quarters and dimes together. The coins total $3.75. How many quarters, dimes, and nickels are in Isaac's pocket?
Answer:
There are 16 nickels, 7 dimes, and 9 quarters.
Step-by-step explanation:
Aight, so lets set dimes as "x". Since there are 2 more quarters than dimes, quarters is "x+2". And since nickels is equal to dimes plus quarters, nickels takes the role of "(x+2)+x". We can simplify this by adding x and x together, so nickels is "2x+2" In this example, I'm converting these variables to cents, since it's easier than converting to dollars. Since a dime is 10 cents, 10 times x is"10x". Quarters are worth 25, so first we do x times 25 (25x) and then 2 times 25 (50). Then nickels. 2x+2 times 5 is 10x + 10. Alright, so now we have our cent values. $3.75 is 375 cents, so now we can make an equation:
10x + 25x + 50 + 10x + 10 = 375 cents.
I'm guessing you already know how to solve an equation, first combine like terms, then figure out how many times the variable goes into the numerical value. You should end up with 7, which is dimes. If we go back to our problem, we see that there are 2 more quarters, so 7+2= 9 quarters. As for nickels (9+7) there are 16 nickels.
There's probably a more efficient way to do this, but since I'm so... uh... inefficient, this is the best explanation I can do :p
Answer:
16 nickels 7 dimes 9 quarters
Step-by-step explanation:
im just that smarttttttt lol!! hope this helped
N January, the price of a dozen eggs at a grocery store was $0.89. By June, the price had increased to $0.99. What was the percent of increase in the price, to the nearest tenth of a percent?
The initial price of eggs is $0.89 which is then increased to $0.99, so the percentage increase in the price is 11.23%.
What is Percentage?The Latin term "per centum," which signifies "by the hundredth," was the source of the English word "percentage." Segments with a denominator of 100 are considered percentages. In other terms, it is a relationship where the worth of the entire is always considered to be 100.
As per the given data in the question,
The price of dozen eggs = $0.89
The price increase by June = $0.99
The percentage increase in the price,
% increase = (0.99 - 0.89)/0.89 × 100
% increase = 11.2%
Therefore, the increase is 11.2%.
To know more about Percentage:
https://brainly.com/question/29306119
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De cuántas formas se puede vestir una mujer teniendo 3 blusas (blanca, azul, rosada), dos pantalones (negro y café) y tres pares de zapatos (negros, azules, grises) (tomado de precalculo James Stewar)
Answer:
Step-by-step explanation:
¡Hola! Lo siento, pero no hablo español. ¡qué tengas un lindo día!
5x+10 resultado cuál es?
Answer:
What is x? I will tell you the answer in the comments!! Thank you!!
Answer choices:
16/3
40/9
4/9
4/3
Answer:
0.44444444 or 4/9
Step-by-step explanation:
Since we know the value of [tex]x[/tex], we can rewrite the equation replacing the variables.
[tex]\frac{2}{3}^{2} + 3*\frac{2}{3} - 2[/tex]
Now solve. While solving, remember the order of operations.
[tex]\frac{2}{3}^{2} + 3*\frac{2}{3} - 2 = 0.44444444[/tex] or [tex]\frac{4}{9}[/tex]
Cindy says that 1/4 divided by 12= 3. is she correct? if not, justify your reasoning and give the correct quotient
Answer:
No, Cindy is not correct.
Step-by-step explanation:
1/4 divided by 12 is dividing by a fraction
So:
1/4 / 12/1 = 1/4 x 1/12=1/48
1/48 is not equal to 3
sine of z if the opp=5 hyp=6
Step-by-step explanation:
sin z = 5/6
since sin= opposite/hypo
Answer:
decimal form = 56.4426....
degree form = 56 degrees 26 minutes 33.68 seconds
Step-by-step explanation:
sin theta = opposite/hypotenuse
sin theta = 5/6
theta = sin-1 (5/6)
PLZZZ HELP ME!!!
Find the volume of the pyramid.
An oblique rectangular pyramid with a base length of 3 centimeters and a width of 1 centimeter. The pyramid has an altitude of 7 centimeters.
V=lwh/3
=3*1*7/3
=21/3
=7
Hope you like my answer.
Answer:
V=7 (Volume)
Step-by-step explanation:
V=lwh/3=3*1*7/3=7
Nat wants to buy a new bike for $240. She has already saved $67. Over the summer, she will earn $100 per month walking dogs.
How many months will it take her to earn the rest of the money she needs to buy the bike? Enter the answer in the box.
months
Answer:2 months
Step-by-step explanation:
line segment CD has coordinates C(-1,9) and D(-7,1). If line segment EF is parallel to line segment CD, what is the slope of line segment EF?
Answer: Slope of segment EF is -4/3
Answer:
The answer is -3/4
Step-by-step explanation:
:)
My little brother spent $5 on comic books and magazines. He bought 4 items. If comic books
cost $1 and magazines cost $2, how many of each item did my brother buy?
comic books
magazines
No links please!
Thank you
Answer: He bought 1 magazine and 3 comic books.
Step-by-step explanation: If comic books cost $1 and magazines cost $3, the equation for the problem should look like this: 2(m) + 1(c) = 5, since you know that the brother spent $5 in total. "m" represents the number of magazines purchased while "c" represents the number of comic books purchased. If you plug in 1 for "m" and 3 for "c", the equation would be true and would equal a total of $5. Also, 1 magazine and 3 comic books would mean that the little brother did, in fact, purchase 4 items.
A car uses 10 liters of gasoline every 180 km. How many km. will it travel with 48 liters?
Answer:
864 km
Step-by-step explanation:
Hope this helps! (I would appreciate brainliest, if not that's okay!!)
ANSWER FOR BRAINLIEST:
The low temperatures for the last five days are: Low Temperatures: 62, 46, 50, 52, 55.
Find the MEAN ABSOLUTE DEVIATION (MAD) of the temperatures
Answer:
4.4
Step-by-step explanation:
The mean absolute deviation is 4.4, and you can just search "mean absolute deviation calculator ".
–6z^2− 8z + 8 = 0
sole using the quadratic formula
Answer:
Simplifying
6z2 + -8z + 1 = 0
Reorder the terms:
1 + -8z + 6z2 = 0
Solving
1 + -8z + 6z2 = 0
Step-by-step explanation:
ASAP (WILL MARK BRAINIEST)
A large emerald with a mass of 812.04 grams was recently discovered in a mine. If the density of the
grams
emerald is 2.76 cm3 what is the volume? Round to the nearest hundredth when necessary and only
enter numerical values, which can include a decimal point. (6 points)
Compute the value of the discriminant and give the number of real solutions of the Quadratic equation 3x^2+5x-2=0
Answer:
Discriminant = 49, two real solutions
Step-by-step explanation:
Discriminant = b² - 4ac = (5)² - 4(3)(-2) = 25 + 24 = 49
Since 49>0, then the quadratic equation has two real solutions.
Answer:
D=49
x=1/3
x= -2
Escribe cada expresión como un numero racional.
A. El denominador es el triple del numerador disminuido en 2 y el numerador es el menor múltiplo de 5 diferente de 0.
B. El numerador es cuatro veces menor que el denominador, que corresponde al resultado de 8 · 2.
ayudenme pliss
Answer:
es la B. El numerador es cuatro veces menor que el denominador, que corresponde al resultado de 8 · 2.
If cot= -1/3 and cos theta Greater than 0, find the trigonometric function values in simplest radical form
Answer:
Step-by-step explanation:
If cot= -1/3 and cos theta Greater than 0, find the trigonometric function values in simplest radical form
helppppppppppppppppppppppppppppppp
Answer:
b
Step-by-step explanation:
answer for brainilest 11 points
Answer:
729 is 3 to the power of 6
Step-by-step explanation:
Answer:729
Step-by-step explanation: 3x3x3x3x3x3=729
Factor 20t + 35
I don't understand how to factor
Answer:
5(4t + 7)
Step-by-step explanation:
1) notice the 20 and 35 are both divisible by 5
2) factorise using 5
5(4t + 7)
Find the surface area of the figure.
22 m
12 m
5 m
Answer:
Step-by-step explanation:
5*12=60
60*22=1320
PLZZ HELPP ILLL GIVE BRAINLIST
Answer:
the last one the red one or is that orange is right
Step-by-step explanation: