Answer:
x= 2i√2
Step-by-step explanation:
Combine terms 10x^2+83=3
Subtract 83 from both sides 10x^2=-80
Divide 10 from both sides x^2=-8
Take square root of each side x= square root of -8
Since there is no perfect square we do prime factorization of the 8 we get 4 and 2.
4 is a perfect square so it stays outside (but remember that what stays outside has the be result of the square so its a 2) and two stays inside the square
2√2
Remember that the response was negative so we have to add i.
Therefore, x= 2i√2
someone help lolz..
pls help i dont get this and i want u to explain this pls
Answer:
$0.32/ $0.31
Step-by-step explanation:
unit prices are determined by dividing the price by the number of units, OZ in this case. $4.50÷14oz= $0.32
3.75÷12oz= $0.31
What is the slope of a line that is parallel to y=4/7x-2
Two lines are parallel if the have the same slope. To find the slope of the line parallel to the line y=4/7x-2 we need to get the line into slope-intercept form (y = mx + b), but the line is already in that form, so the slope is m = 4/7.
Because two lines are parallel if the have the same slope, we concluded that the slope of the parallel to y=4/7x-2 is m = 4/7.
Solve for X.
A. 10
B. 12
C. 15
D. 22
Answer:
B. 12Step-by-step explanation:
Since Z is midpoint of SR and Y is midpoint of QR, so as per triangle midpoint theorem ZY is parallel to SQ and measures half of its value:
SQ = 2ZY3x - 8 = 2(x + 2)3x - 8 = 2x + 43x - 2x = 4 + 8x = 12Correct answer choice is B
Answer:
the answer is B.12 ......
Which set of ordered pairs does not represent a function?
{(0,9),(-1,-2), (-5,2), (-3,0)}
{(0, -6),(-6,5), (4,5), (5,7)}
{(0,8),(-7, -1), (4,8), (1,5)}
{(4, -6), (9, – 7), (9,-4), (6,3)}
Answer:
{(4, -6), (9, – 7), (9,-4), (6,3)}
Step-by-step explanation:
It doesn't represnt a function because the 9 repeats twice
Helppppppppppppp plzzzzzzzzzzzzzzzzzzzzzz
Answer:
These parallel lines cross 1 line. Because they are parallel they will form the same angles on that line. Therefore, x+50 = 3x-100 since those angles are corresponding angles made by a pair of parallels.
To find x we need to find what value of x gives the same answer for 3x-100 and x+50 since those 2 angles are equal.
x+50 = 3x-100 - now all we need to do is solve for x:
x+50 = 3x-100
50=2x-100
150=2x
75=x
x=75
Step-by-step explanation:
Fitta spends 25 minutes on his rowing machine everyday, except for the weekends. How long will Fitta spend on his rowing machine in four weeks? Give your answer in hours and minutes. *
Answer:
25×20×60 =30000
30000/60=500 hours
Answer:
8 hours and 20 minutes
Step-by-step explanation:
There are 5 days a week and Fitta spends 25 minutes each day.
25 x 5 = 125 minutes a week
125 x 4 = 500 minutes in 4 weeks
There are 60 minutes in an hour, so 500 divided by 60 = 8.3333
So the results are 8 hours and 20 minutes
Seven students cut 5 and three-fourths inches of thread from a spool for a school project. What number represents the change in the amount of the thread on the spool?
Answer:
-40 1/4
Step-by-step explanation:
Answer: -40 1/4
Step-by-step explanation:
how many solutions to this problem
in my opinion i think there is twooo
a rectangular garage has a volume of 480m^3, with a length of 12m and the width 8m.
Answer:
5 m
Step-by-step explanation:
V = l × w × h
480 = 12 × 8 × h
h = 480 ÷ 96 = 5 m
Answer:
5m
Step-by-step explanation:
Well volume is V=Bh. So you do 12 times 8= 96 thats your base. So you need to them do 480 divided by 96 which equals 5 so therefore 5 is your answer. Also just to make sure that's the right answer, do 12 times 8 times 5. That equals 480.
A sales representative for a large furniture warehouse is paid a commission rate of 5%. Find her commission if she sold $2,314,976 worth of furniture last year.
Answer:
Step-by-step explanation:
2,314,976*5%= $115,748.80
Elena works out on a treadmill. She uses a program that combines running and walking. She knows that she runs .2 miles and she walks . 1 miles per minute. At the end of the workout, the treadmill showed her workout distance was 8 miles Give three possible combinations of walking and running times that would result in Elena having a workout distance of 8 miles Write an equation that will relate the number of minutes Elena runs and walks to the total distance of her workout
Answer:
s = 2t₁ + t₂
3 possible combinations:
t₁ = 0 min , t₂ = 8 min
t₁ = 1 min , t₂ = 6 min
t₁ = 2 min , t₂ = 4 min
Step-by-step explanation:
The distance covered by a body in uniform motion is given by the following equation:
s = vt
where,
s = distance
v = speed
t = time
For running:
s = s₁
t = t₁
v = 2 miles/min
Therefore,
s₁ = 2t₁
For walking:
s = s₂
t = t₂
v = 1 miles/min
Therefore,
s₂ = t₂
And the total distance will be:
s = s₁ + s₂
s = 2t₁ + t₂
where,
s = total distance covered in miles
t₁ = running time in min
t₂ = walking time in min
Now, the total distance is given as 8 miles:
8 = 2t₁ + t₂
So, the 3 possible combinations of time to satisfy this equation can be:
t₁ = 0 min , t₂ = 8 min
t₁ = 1 min , t₂ = 6 min
t₁ = 2 min , t₂ = 4 min
ANSWER ASAP
540 students bought lunch in the cafeteria. If 45% of the students bought lunch in the cafeteria, how many students ate lunch altogether? The number of students who at lunch altogether is students.
Answer:1,200 students
Step-by-step explanation:
540/45=12=1%
12*100=1,200
Help! My friends needs help rlly bad
The answer to number 1 is 2/9 of her paycheck. The answer to number 2 is 3/5. Its square is 9/25 which is in between 1/3 and 1/2. It's reciprocal is 5/3 which is in between 1 and 2. It is also in simplest form.
The height h, in feet, of objects such as thrown balls can be modeled as a function of time t, in seconds, as h(t)=−16t2+v0t+h0, where the initial upward velocity is v0, in feet per second, and the initial height is h0, in feet. Marla and Kerry are practicing lacrosse tosses. Marla throws a ball from a height of 6 feet with an initial vertical velocity of 40 feet per second. At the same instant, Kerry throws a ball from a height of 5 feet with an initial vertical velocity of 50 feet per second. Which ball is in the air longer and by how many seconds more?
Answer:
Kerry's ball stays longer in the air than Marias ball by an extra 0.582 seconds
Step-by-step explanation:
The equation that models the height, h, in feet of object thrown modeled as a time function is given as follows;
h(t) = -16t² + v₀·t + h₀
Where;
v₀ = The velocity upwards (vertical velocity)
h₀ = The initial height of the object in feet
The given parameters are;
The initial height from which Maria throws a ball = 6 feet
The initial vertical velocity with which Maria throws the ball = 40 feet per second
The initial height from which Kerry throws a ball = 5 feet
The initial vertical velocity with which Kerry throws the ball = 50 feet per second
For Maria, from the equation for the height of the object, we have;
h(t) = -16t² + v₀·t + h₀
Where for Maria, we have;
h₀ = 6 feet
v₀ = 40 ft/s
Substituting gives;
h(t) = -16 × t² + 40 × t + 6 = -16·t² + 40·t + 6
h(t) = -16·t² + 40·t + 6
The time it takes for the ball to go up and come back down again is given by the value of t, when h = 0 (ground level) as follows;
0 = -16·t² + 40·t + 6
16·t² - 40·t - 6 = 0
From the quadratic formula, we have
[tex]x = \dfrac{-b\pm \sqrt{b^{2}-4\cdot a\cdot c}}{2\cdot a}[/tex]
[tex]t = \dfrac{40\pm \sqrt{(-40)^{2}-4\times 16 \times (-6)}}{2\times 16} = \dfrac{40 \pm 8 \times \sqrt{31} }{32} = \dfrac{5}{4} \pm \dfrac{\sqrt{31} }{4}[/tex]
t ≈ 2.64 s or -0.14 s
Therefore, the time the ball spends in the air ≈ 2.64 s
For Kerry, we have;
h₀ = 5 feet
v₀ = 50 ft/s
Substituting gives;
h(t) = -16 × t² + 50 × t + 5 = -16·t² + 50·t + 5
h(t) = -16·t² + 50·t + 5
Which gives;
16·t² - 50·t - 5 = 0
From the quadratic formula, we have
[tex]x = \dfrac{-b\pm \sqrt{b^{2}-4\cdot a\cdot c}}{2\cdot a}[/tex]
[tex]t = \dfrac{50\pm \sqrt{(-50)^{2}-4\times 16 \times (-5)}}{2\times 16} = \dfrac{50 \pm 2 \times \sqrt{705} }{32} = \dfrac{25}{16} \pm \dfrac{\sqrt{705} }{16}[/tex]
t ≈ 3.222 s or -0.097 s
he time the ball spends in the air ≈ 3.222 s
Therefore, Kerry's ball that spends approximately 3.222 seconds stays longer in the air than Maria's ball that spends approximately 2.64 seconds in the air.
The difference in the two time duration is 3.222 - 2.64 = 0.582
Kerry's ball stays longer in the air than Marias ball by an extra 0.582 seconds.
Which statement about rational numbers is not correct? *
10 points
A) All rational numbers are also integers.
B) Zero is a rational number.
C) All integers are also rational numbers.
D) All rational numbers can be written in the form a/b.
Answer:
A) is not correct
Step-by-step explanation:
All rations numbers are not integers.
Integers = { ........ -4 , -3 , -2 , -1 , 0 , 1 , 2 , 3 ....................}
1/2 is a rational number but it is not an integer
Answer:
c
Step-by-step explanation:
hope this helps:)
ASAP , I need helppppppp
A scientist used 786 milliliters of an liquid for an experiment. How many liquids of liter did the scientist to use for this experiment?
Answer:
0.786 L
Step-by-step explanation:
1000 ml to 1 L
(786 ml) / (1000 ml) = 0.786 L
0.786 L liquids of liter did the scientist to use for this experiment
What is division?Division is the process of splitting a number or an amount into equal parts.
here, we have,
A scientist used 786 milliliters of an liquid for an experiment.
we know,
1000 ml to 1 L
so, we get,
(786 ml) / (1000 ml) = 0.786 L
Hence, 0.786 L liquids of liter did the scientist to use for this experiment.
To learn more on division click:
brainly.com/question/21416852
#SPJ2
please can i have the asnwer !!
9514 1404 393
Answer:
(3, 2), (4, 0)
Step-by-step explanation:
Two integer grid points are crossed by the curve on or above the x-axis:
(x, y) = (3, 2), (4, 0).
Does any one have an idea ?
Answer:
of what? ohhh ok
Step-by-step explanation:
yeah
Please help me out!
Answer:
14
Step-by-step explanation:
Frist find the square root of 49=7.
Next add 7+7=14.
Finally there is your answer 14.
Answer:Perimeter=28
Area=a^2
49=a^2
√49=√a^2
√49=a
a=7
Perimeter=4a
4(7)=28
I hope this is good enough:
A photographer charges
$
45.50
per hour. How much does the photographer charge for
5
hours of work?
Answer:
$227.50
Step-by-step explanation:
45.50*5=227.50
Answer:
45.50 times 5=227.5
Step-by-step explanation:
I need help fast!!!
Joe drove 936 miles in 13 hours. At the same rate, how long would it take him to drive 504 miles?
Solve:
r/5- 6
= -1
My Answer:
Answer:
r = 25
Step-by-step explanation:
r/5 = 5
5 x r/5 = 5 x 5
r = 25
Answer:
r=25
Step-by-step explanation:
r/5-6+6= -1+6
r/5=5
r/5×5=5×5
r=25
What is the distance (in units) between points C and D? Round your answer to the nearest hundredth. (5 points)
3.46 units
8.49 units
12.00 units
72.00 units
Please ill give brainliest!
Answer: 8.49
Step-by-step explanation:
i took the test and it was right
\\
jytuykdtulfhgdyjdryj
Answer:
Hi
Step-by-step explanation:
Two years ago, Mr Singh was 7 times as old as his son. In 3 years' time, he will be 4 times as old as his son. Find Mr Singh's present age.
Answer:
37 years old.
Step-by-step explanation:
2 years ago
Singh- 7s
Son- s
3 years in the future(so 5 years forward)
Singh- 7s+5
Son- s+5
7s+5 = 4(s+5)
7s+5 = 4s+20
3s = 15
s=5
2 years ago the son was 5 so Mr. Singh was 35
Now Mr. Singh is 37
Which is the best estimate of
11 1/5 and 2 3/4
I think your question lacks a little bit of information. After a little research, I am able to find that you probably wanted to say '11 1/5 divided by 2 3/4'.
Therefore, I am solving the question assuming that you want to say:
''What is the best estimate of 11 1/5 divided by 2 3/4''.
Answer:
The best estimate of 11 1/5 divided by 2 3/4 will be: 4
Step-by-step explanation:
Given the information
11 1/5 divided by 2 3/4
solving the expression
[tex]11\frac{1}{5}\div 2\frac{3}{4}[/tex]
[tex]\mathrm{Convert\:mixed\:numbers\:to\:improper\:fraction:}\:a\frac{b}{c}=\frac{a\cdot \:c+b}{c}[/tex]
so
[tex]11\frac{1}{5}=\frac{11\cdot 5+1}{5}=\frac{56}{5}[/tex][tex]2\frac{3}{4}=\frac{2\cdot 4+3}{4}=\frac{11}{4}[/tex]so the expression becomes
[tex]11\frac{1}{5}\div 2\frac{3}{4}\:=\frac{56}{5}\div \:\frac{11}{4}[/tex]
[tex]=\frac{56}{5}\times \frac{4}{11}[/tex]
[tex]=\frac{56\times \:4}{5\times \:11}[/tex]
[tex]=\frac{224}{5\times \:11}[/tex]
[tex]=\frac{224}{55}[/tex]
[tex]=4.07[/tex]
[tex]= 4[/tex] (Rounded to the nearest 1 or the Ones Place)
Therefore, the best estimate of 11 1/5 divided by 2 3/4 will be: 4
the diagonals of a rhombus are _____. A. perpendicular B. sometimes equal C. parallel D. never congruent
Answer:
The answer is perpendicular
Step-by-step explanation:
Hope i helped :)