Answer:
Roots: 0.79 and 3.79Step-by-step explanation:
[tex]x^2 + 3x - 3 = 0\\a=1\,,\ \ b=3\,,\ \ c=-3\\\\x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x=\dfrac{-3\pm\sqrt{3^2-4\cdot1\cdot(-3)}}{2\cdot1}=\dfrac{-3\pm\sqrt{9+12}}{2}=\dfrac{-3\pm\sqrt{21}}{2}\\\\x\approx0.79\quad or\quad x\approx3.79[/tex]
A city manager made a scatter plot of the number of retail stores in a certain city over the years. The scatter plot had a trend line with an equation of y = 11x + 12, where y is the total number of retail stores and x is the number of years since 1990 Mark and his family moved to the city in 1997. Use the equation to predict how many retail stores there were in 1997.
If the number of the years will be 7. Then the number of the retail stores will be 89.
What is the linear system?A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.
A city manager made a scatter plot of the number of retail stores in a certain city over the years.
The scatter plot had a trend line with an equation of y = 11x + 12, where y is the total number of retail stores and x is the number of years since 1990 Mark and his family moved to the city in 1997.
Use the equation to predict the number of retail stores there were in 1997 will be
The number of the years will be
x = 1997 - 1990
x = 7 years
Then we have
y = 11 × 7 + 12
y = 77 + 12
y = 89
More about the linear system link is given below.
https://brainly.com/question/20379472
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Can one of y’all help me with this pls
Answer:
d. 42
Step-by-step explanation:
PEDMAS
We do brackets first, so:
4 + 4 = 8
Then multiplication,
5 x 8 = 40
Then addition
40 + 2 = 42
4+4=8
5(8)+2
5x8=40
40+2= 42
mb- The graph shows the relationship between time and the number of soda bottles a machine can make. Use the points (2,100) and (4,200) to find the number of soda bottles the machine can make each minute
Answer:
1200
Step-by-step explanation:
We can gather from what's given that y=20xy represents the total number of bottles produced in the given time in seconds, which is x. When x=1, y=20, This means that each second the machine can make 20 soda bottles. Each minute is 60 seconds, so when x=60, y=20*60 =1200 soda bottles.
Please answer correctly !!!! Will mark Brianliest !!!!!!!!!!!!!!
Answer:
If I remember correctly it should be 7 for the first one and 5 for the second
Answer:
7 & 5
Step-by-step explanation:
Hope it helps:)!!!!!
Answer pllzzzzzzzzzzzz
Answer:
Step-by-step explanation:
3 a) 6
3 b) 12
3 c) 12
4 a) 4/5
4 b) 10/9
4 c) 17/15
If a || b || c and m∠9 = 76°, find the measure of each missing angle.
Answer:
m∠1 = m∠3 = m∠5 = m∠7 = m∠9 = m∠11 = 76°
m∠2 = m∠4 = m∠6 = m∠8 = m∠10 = m∠12 = 104°
Step-by-step explanation:
Vertical angles are congruent. When lines are parallel, corresponding angles are congruent.
m∠1 = m∠3 = m∠5 = m∠7 = m∠9 = m∠11 = 76°
m∠2 = m∠4 = m∠6 = m∠8 = m∠10 = m∠12 = 180 - 76° = 104°
The area of the base of this cylinder is 25picm^2 and the height of the cylinder is 8cm. Find the surface area of the cylinder.
Answer:
408.2cm
Step-by-step explanation:
Given data
Area of base= 25πcm^2
Height= 8cm
Let us find the radius of the cylinder
Area= πr^2
25π= πr^2
25= r^2
r= √25
r= 5cm
Let us now find the surface area
SA=2πrh+2πr^2
Substitute
SA= 2*3.14*5*8+ 2*3.14*5^2
SA= 251.2+ 157
SA= 408.2cm
Hence the surface area is 408.2cm
A. (-1,0)
B. (0, -2)
C. (-2, 0)
D. (0, -1)
Answer:
the answer is B, (0, -2) :)
Step-by-step explanation:
Can someone please help me
Answer:
1/6
Step-by-step explanation:
he has 1 chance to roll 6 different numbers
7)
You are asked to solve 12x – 18 = 126. Which three statements are true?
A)
First, subtract 126 from both sides.
B)
First, add 18 to both sides.
12x = 144
D)
x=9.
E
x = 12
Answer:
B, C, and E
Step-by-step explanation:
A sphere just fits inside a cube with edges 20 in. Long. What is the volume of the sphere? What is the volume of the cube? What is the volume of the space between the cube and sphere?
Answer:
Step-by-step explanation:
Volume of a cube = (side)³
= (20)³
= 8000 cubic in.
Volume of the sphere which just fits in = [tex]\frac{4}{3}\pi r^{3}[/tex]
Here, r = Radius of the sphere
Since, sphere just fits in, radius of the sphere = half of the dimension of the cube
r = [tex]\frac{20}{2}[/tex]
r = 10 in
Therefore, volume of the sphere = [tex]\frac{4}{3}\pi (10)^3[/tex]
= 4188.79 cubic inch
Volume of the space between the cube and sphere = 8000 - 4188.79
= 3811.21 cubic inch
help me its due in 13 mins i forgot about it
Answer:im so sorry but i cant see the page you should take a more clear picture and send it again
Step-by-step explanation:
If 6 bales are needed to feed 20 head of cattle, how many bales are needed to feed 100 head of cattle?
Answer:
333
Step-by-step explanation:
Answer:
the answer is 30
Step-by-step explanation:
[tex]100 \div 20 = 5 \\ 6 \times 5 = 30[/tex]
evaluate the following using distributive property
(-15/4 x 3/7 + -7/5 + (-15/4 x -12/5)
Answer:
5.99285714286
Step-by-step explanation:
5.99285714286
Help me please.. :) :) :) :) :) :)
Answer:
Reflection Waves(i think)
Step-by-step explanation:
When light bounces off something then that is reflection and music travels in sound waves so I would say waves.
I need help (20 points)
What it (f+g)(y) for the functions
F(y)=5y^2-2y+1
G(y)=-3y^2-y-2
Answer:
The first choice
Step-by-step explanation:
In the picture above, Goodluck.
Solve for x. Show work
Answer:
X=11
Step-by-step explanation:
5x+10+58=11x+2
-6x+68=2
-6x=-66
x=11
PLZ HELP NO LINKS! WILL GIVE BRAINLIEST!
There are 6500 people in a certain area. The area is growing at a rate of 3.5%.
Use the formula A=Pertto calculate the time it would take for the area to reach 11500 people. Calculate the solution for t to the nearest tenth using logarithms.
Answer:
24,831.28
Step-by-step explanation:
Brainliest pls
Answer:
t = 16.6
Step-by-step explanation:
In the formula:
[tex]a = p(1 + r )^{t} [/tex]
A is the final amount, in this case is 11500 people. P is the initial amount, in this case is 6500 people. r is the growth rate, which in this case is 0.035 - we have to express it s a decimal, not a percent. And finally t is the time, which is the variable we want to find.
Let's clear t first and replace all these values at the end. To clear t we have to leave only the factor which exponent is t on one side of the equation. To do this we have to divide both sides by P:
[tex] \frac{a}{p} = \frac{p}{p} (1 + r) ^{t} \\ \frac{a}{p} = (1 + r)^{t} [/tex]
Now we have to use the following rule for the exponents and logarithms:
[tex] {a}^{x} = b[/tex]
Apply logarithms on both sides:
[tex]log( {a}^{x}) = log(b)[/tex]
By the exponents rule of logarithms
[tex]x \: log(a) = log(b)[/tex]
For this problem we have:
[tex]log \frac{a}{p} = log(1 + r)^{t} \\ log \frac{a}{p} =t \: . \: log(1 + r)[/tex]
Now we have to divide both sides by log(1+r) to clear t:
[tex]log \frac{a}{p} = t \: . \: \frac{log(1 + r)}{log(1 + r)} \\ t = \frac{log \: \frac{a}{p} }{log(1 + r)} [/tex]
And finally we just have to replace the values into this equation we found: A = 11500, P = 6500 and r = 0.035:
[tex]t = log \: \frac{11500}{6500} \\ log(1 + 0.035) \\ log \: \frac{23}{13} \\ t = log \: 1.035 \\ t = 16.6[/tex]
finish solving for x
NO LINKS OR I WILL REPORT
Answer:
x=10 y=20
Step-by-step explanation:
All Questions Are Above
Answer:
...
Step-by-step explanation:
2. 5.25, because the radius is half the diameter
3. 3 in because the diameter is 2x the radius
4. i.dk this one sorry
Answer:
2. 5.25in
3. 3 in
4. 81.68 or 82
Step-by-step explanation:
The first two are basically multiplication and division. radius is half the diameter, and diameter is the whole of radius. the circumference is 3.14 or [tex]\pi[/tex] x diameter
so you need to add the radius (13) by itself (13+13) to get the diameter (or 13*2) then multiply by 3.14159. (26*3.14159 = 81.68) and if you need to round its 82.
~R3V0
PLEASE ANSWER I WILL GIVE YOU BRAINLIEST
Answer:
answer is A
hope it helps
Giving brainliest to whoever can solve the problem in this image
Answer:
Its A
Step-by-step explanation:
V = (π)r^2(h)
R = 1/2 diameter
= 24/2 = 12
= 12
H = 12
V = (π)12^2(12)
V = (π)144(12)
V = (π)1728
V = 5428.67
Most likely C
A spinner is divided into five colored sections that are not of equal size: red, blue, green, yellow, and purple. The spinner is spun several times, and the results are recorded below:
Spinner Results
Color Frequency
Red 7
Blue 15
Green 6
Yellow 5
Purple 8
Based on these results, express the probability that the next spin will land on purple as a decimal to the nearest hundredth.
Answer:
The probability that the next spin will land on blue is 0.12.Step-by-step explanation:
The result of the several spins are as follows:
Color Frequency
Red 18
Blue 9
Green 18
Yellow 19
Purple 12
TOTAL 76
Compute the probability that the next spin will land on blue as follows:
Thus, the probability that the next spin will land on blue is 0.12.
Find the difference:
3 4/6 - 1/6
O A. 21 / 1
O B. 273
O c. 3 1 / 3
N-
D. 34
E. 3
O E. 3
Answer:
3 1/2
Step-by-step explanation:
4 1 3
_ - _ = _
6 6 6
Then we simplify. 3 3 1
_ ÷ = _
6 3 2
Then just add your 3 and there 3 1/2 is your asnwer
The difference between 3 4/6 and 1/6 will be 3 1/2.
Given numbers are:
(1)[tex]3\frac{4}{6}[/tex] [tex]=\frac{22}{6}[/tex]
(2)[tex]\frac{1}{6}[/tex]
What is a fraction?A fraction is a part of a whole.
The Difference between [tex]3\frac{4}{6}[/tex] and [tex]\frac{1}{6}[/tex] will be = [tex](\frac{22}{6} )-(\frac{1}{6} )[/tex]
[tex]=\frac{22}{6} -\frac{1}{6}[/tex]
[tex]=\frac{21}{6}[/tex]
[tex]=\frac{7}{2}[/tex]
[tex]=3\frac{1}{2}[/tex]
Hence, the difference between 3 4/6 and 1/6 will be 3 1/2.
To get more about fractions visit:
https://brainly.com/question/78672
ill choose brainliest if bestt
Answer:
A rectangle.
Step-by-step explanation:
The shape of the data distribution is a rectangle.
Complete the sentence below.
The amplitude of the graphs of the sine and cosine functions is __
and the period of each is
__
The amplitude of the graphs of the sine and cosine functions is the vertical distance between the sinusoidal axis and the maximum or minimum value of the function.
And the period of each is the distance between two peaks of the graph, or the distance it takes for the entire graph to repeat.
The amplitude of each of the graphs of the sine and cosine functions is 1
The period of each of the graphs of the sine and cosine functions is 2π.
By definition, the amplitude of the graphs of the sine and cosine functions is defined as the vertical distance between the x - axis which is also called the sinusoidal axis and the peak value which is the maximum or minimum points located on the graph curve function. The basic graphs of sine and cosine function are the same and they have an amplitude equal to 1. By definition, the period of the graphs of the sine and cosine functions is defined as the the distance between two peaks of the graph or the period for which the graph repeats. In this case the time period is always 2π.Read more at; https://brainly.com/question/3919296
need help asap! solve for x, the measure of the altitude in the given triangle
Answer:
3.9
Step-by-step explanation:
[tex]8^{2} -7^{2} =15[/tex]
[tex]\sqrt{15} =3.9[/tex]
Your friend thinks that the regular pentagon in the diagram has 10 lines of symmetry. Explain and correct your friend's error.
Answer:
A pentagon has 5 lines of symmetry, not 10.
Step-by-step explanation:
There are only 5 lines connecting to form a pentagon and all five lines are the same length.
ANSWER
NO LINKS I WILL REPORT
Answer:
they all have a probability of 1/3