Answer:
205 minutes
Step-by-step explanation:
If Monica has already practiced 18% of her time, we know that she has practiced [tex]\frac{18}{100}[/tex]. If this 18% corresponds to 45 min, we can have the following equation: [tex]\frac{18}{100} = \frac{45}{x}[/tex]. We can rearrange the equation to find the value of x by doing [tex]x = \frac{45 \cdot 100}{18} = 250[/tex], so she practices 250 min every Wednesday. If we subtract the time she has already practiced (45 min) we find out she still has to practice more 205 min.
What is the median of the data displayed in this box-and-whisker plot?
OPTIONS
84.0
99.5
113.0
143.0
Answer:
106.25
Step-by-step explanation:
99.5+113= 212.5 /2 = 106.25
whats the minimum and maximum value of f(x)=3(x+8)^2−10
Answer:
(-8,-10)
Step-by-step explanation:
Rewrite (x+8)2(x+8)² as (x+8)(x+8).
f(x)=3((x+8)(x+8))−10
Expand (x+8) (x+8) using the FOIL Method.
Apply the distributive property.
f(x)=3(x(x+8)+8(x+8))−10
Apply the distributive property.
f(x)=3(x⋅x+x⋅8+8(x+8))−10
Apply the distributive property.
Simplify and combine like terms.
Simplify each term.
Multiply x by x.
f(x)=3(x2+x⋅8+8x+8⋅8)−10
Move 8 to the left of x.
f(x)=3(x2+8⋅x+8x+8⋅8)−10
Multiply 8 by 8.
f(x)=3(x2+8x+8x+64)−10
Add 8x and 8x.
f(x)=3(x2+16x+64)−10
Apply the distributive property.
f(x)=3x2+3(16x)+3⋅64−10
Simplify.
Multiply 16 by 3.
f(x)=3x2+48x+3⋅64−10
Multiply 3 by 64.
f(x)=3x2+48x+192−10
Subtract 10 from 192.
f(x)=3x2+48x+182
The minimum of a quadratic function occurs at x=[tex]-\frac{b}{2a}[/tex] If a is positive, the minimum value of the function is f ([tex]-\frac{b}{2a}[/tex]).
Substitute in the values of aa and b.
x=−[tex]\frac{48}{2(3)}[/tex]
x=-8
Replace the variable x with −8 in the expression.
f(−8)=3(−8)2+48(−8)+182
Y=-10
Therefore, the minimum value is (-8,-10) but if it is asking for just the y-value it would be -10.
What are the exact values of the six trigonometric functions for negative startfraction 7 pi over 6 endfraction radians?
The exact values are;sin -7π/6 = 0.5; cos -7π/6 = -√3/2; tan -7π/6 = -1/√3; sec -7π/6 = -2/√3; csc -7π/6 =2; cot -7π/6 = -√3
How to work with unit circle of trigonometric functions?We want to find the six trigonometric functions for -7π/6 radians.
It should be noted that;
7π/6 radians = -210° degree = -210 +360 = 150° = 5π/6
From the definition of unit circle and applying to what we have here, we can express them as;
sin -7π/6 = 0.5
cos -7π/6 = -√3/2
tan -7π/6 = -1/√3
sec -7π/6 = -2/√3
csc -7π/6 =2
cot -7π/6 = -√3
Read more about trigonometric functions at; https://brainly.com/question/20691579
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a rectanguler tank with a base area of 24 cm is filled with water and oil to the depth of 9cm
Answer:
The Volume is 216
Step-by-step explanation:
When finding volume you do base times height. Since depth is like height, you mulitply them and get 216.
The sum of j and 7 is 55. Solve for j.??
Could someone help me with this? I need to solve for X. Here is the problem.
The two angles given are vertical angles, which mean they are equal to each other.
2x + 2 = 3x -52
Add 52 to both sides:
2x + 54 = 3x
Subtract 2x from both sides:
54 = x
Rewrite as x = 54
Answer: x = 54
Gabriella needs 120 meters of fence to surround a rectangular garden.
The length of the garden is three times its width, w.
How wide is the fence?
Please try to include a Screenshot with the answer
Answer:
the width is 1.5meters
Step-by-step explanation:
the perimeter of the fence is 120m
the perimeter= 3w+w+3w+w
120= 3w+w+3w+w
120= 8w
w=1.5m
Answer:
15m
Step-by-step explanation:
Well, she needs 120 meters, which means we already know the circumference (P). P is the sum of all sides.
The lenght (a) is 3 times the width(b).
a = 3b.
Which means if a is x then b is equal to 3x
Since P is the sum of all sides, P is equal to 2a + 2b or 2x + 2*3x = 2x + 6x = 8x
120 = 8x. We are now left with an equation that has one variable only, all we need to do is to divide 120 by 8 to find what x is equal to.
8x = 120
x = 120 / 8
x = 15
We know that width(a) is equal to x, so that's the answer.
Here's a solution you can write:
P = 120m
w = x
l = 3w = 3x
P = 2w + 2l
P = 2*x + 2*3x
P = 2x + 6x
P = 8x
8x = 120
x = 120 / 8
x = 15
w = x -> w = 15m
find the area plssssssssssssssssss
Answer: 32 m^2
Step-by-step explanation:
first set up your equation; A=A rectange - 2(A square). The you plug in your numbers A = 40-2(4). The you do 40-8 = 32
HELP TAKE YOUR TIME°!!!
FOR MY SISTER
Answer:
1.15
2.1
3.3
45
5.3
6.8
7.4
8.5
9. 24
Step-by-step explanation:
Carry on learningAnswer:
1. 15
2. 1
3. 3
4. 2.5
5. 3
6. 8
7. 4
8. 5
9. 24
10. 6
11. 3
12. 52
13. 44
14. 38
15. 24
16. 12
17. 2
18. 12
Step-by-step explanation:
HELP!!!
is the following relation a function?
yes or no?
Answer:
I think the answer is no
Step-by-step explanation:
It's been awhile but if I remember correctly a function cannot be a parabola (this graph) because it does not pass the vertical line test. If there are two points on a vertical line it is not a function. Hope this helps!
Solve the inequality 20 – 6x < -10.
Answer:
x = 5
Step-by-step explanation:
Simplify and solve the following expression: (x + 5)= x?
Step-by-step explanation:
How to solve your problem
(x+5)=x
Solve
1
Subtract
5
from both sides
x+5=x
x+5
2
Simplify
Subtract the numbers
x=x-5
3
Subtract
x
from both sides
x=x-5
Simplify
Combine like terms
Combine like terms
0=-5
Result
0=-5
The input is a contradiction: it has no solutions
Answer:
x=x-5 or 0=-5
Step-by-step explanation:
subtract 5 from both sides
I really need help, I'm struggling. Question is in image.
Answer:
See below ~
Step-by-step explanation:
(a)
Original Temp : -7°FTemp change : 15°F⇒ -7°F + 15°F = 8°F(b)
Temp in Juneau = -28°FTemp in Montreal = -15°FDifference in temp = -28 - (-15)-28 + 15 = -13°F lowersolve: 7x+ 19 = -2X + 55
Answer:
x=4
Step-by-step explanation:
7x+ 19 = -2X + 55
+2x +2x
9x+19=55
-19 -19
9x=36
x=4
Answer:
x=4
Step-by-step explanation:
[tex]\hookrightarrow 7x+ 19 = -2x + 55\\\\\hookrightarrow 7x+2x=55-19\\\\\hookrightarrow 9x=36\\\\\hookrightarrow x=36/9\\\\\hookrightarrow x=4[/tex]
Given that f (x) =x^2 -10x +24 and g (x) =x - 6, find f (x) - g (x) and express the result in standard form
Answer:
x^2 + 9x + 30 = 0
Step-by-step explanation:
Given: f(x) = x² – 10x + 24
g(x) = x – 6
f(- x) = g(x) :
(-x)² - 10(- x) + 24 = x - 6
x² + 10x + 24 - x + 6 = 0
Result: x² + 9x + 30 = 0
Answer:
Y = (x - 11/2)^2 -1/4
Step-by-step explanation:
subtract g(x) to f(x)
f (x) - g (x) = x^2 -10x +24 -x + 6
f (x) - g (x) = x^2 -11x +30
Let's call Y
Y = x^2 -11x +30
The standard form is by definition as Y = a (x-b)^2 + h
In this specific case:
Y = (x - 11/2)^2 -121/4 + 30
Y = (x - 11/2)^2 -1/4
For x2 + 3x - 18 = (x - 3)(x + a), what value
of a would make this equation true?
Bart wants to deposit his piggy bank savings into a savings account. If he deposits $325. 76, how many whole years will it take, at 2% simple
Interest, for that amount to grow to $400. 00?
A. 12 years
B. 4 years
C. 16 years
D. 8 years
Answer:
Step-by-step explanation:
Compounding interest :
Future value of money = Present value * (1+ r)^N
r - interest rate
n - number of period
In our example, Present value = 325.76, FV = 400, r = 2%, and we need to find N
by solving that we can find it that N is equal to 10.3675
Simple interest :
400 - 325.76 = 74.26$ we need to increase
325.76*2% = 6.5152$ each year
74.26 / 6.5152 = 11.3949
as a whole year = 12years
Name the following triangle
Answer:
B
Step-by-step explanation:
sorry if im wrong
Use the drop-down menu to complete each statement. according to this graph, at $10 the quantity supplied is about . as the price of the good rises, the quantity supplied will .
Answer:
14
increase
Step-by-step explanation:
Answer:
14, increase
Step-by-step explanation:
A cylinder has a height that is 2 times as large as its radius. The lateral area of the cylinder is
16π square units. What is the length of the radius of the cylinder?
Answer:
2 units!
Step-by-step explanation:
Answer: 2 units
5pts and whoever has the correct answer gets brainliest
Answer:
B
Step-by-step explanation:
the first bricklayer can build a wall in 15 days. the second bricklayer can build the same wall in 10 days. how long will it take them to build the wall together?
i really need help.
Answer:
6 days
Step-by-step explanation:
1/T1 + 1/T2 = 1/TotalTime
Builder one is 1/15
Builder two is 1/10.
Which inequality represents the graph?
z≤-10 z≥-10
z-10 z<-10
K
+
-25-20 -15-10 -5
0
0
5
O
Answer: z _> -10
Step-by-step explanation:
The high school decided to buy
the track team new uniforms. The
total cost is $1235. The school gets
a special 15% discount if they
order this week. How much is the
discount?
HELP ASAP I REALLY NEED IT MY HEAD HURT BECAUSE OF THIS PLS WOULD GIVE 30pts If Jim spins the spinner 16 times, how many times would you predict the spinner to land on blue based on theoretical probability? Show your work in the box below the image.
Answer:
the answerr is 4
Step-by-step explanation:
please mark me the brainiest
Find the gradients of lines a and b (first to do gets brainlist)
Answer:
A = 8
B = -4
Step-by-step explanation:
Select the correct answer.
Which statement describes the solutions of this equation?
x/x+2+1/x=1
Answer:
~Senpi boi here~
Step-by-step explanation:
Multiply all terms by x and cancel:
x+2x+1=1x
3x+1=x(Simplify both sides of the equation)
3x+1−x=x−x(Subtract x from both sides)
2x+1=0
2x+1−1=0−1(Subtract 1 from both sides)
2x=−1
2x
2
=
−1
2
(Divide both sides by 2)
x=
−1
2
Check answers. (Plug them in to make sure they work.)
x=
−1
2
(Works in original equation)
Answer:
x= −1/2
(Hope this helps!)
Jaxon is decorating the outside of a box in the shape of a triangular pyramid. The
figure below shows a net for the box.
which of the following shapes are squares? please answer correctly I'll mark brainliest
All are technically squares, but if you are referring to just squares, then C and D are squares.
i beg <3
what is the domain? a. (-infinity, infinity) b. (-infinity,4) c. (-4,4) d. (0,4) what is the range? a. (-infinity, infinity) b. (-infinity,4] c. [-4,4] d. (0,4)
Answer:
Given:
A set of functions,
A. y = -(x-4)^2
B. y=3(x- 4)^2
C. y = [x] + 4
D. y = -5x + 4.
To Find:
The function whose range is (-infinity, 4].
Solution:
1. The function y = -(x-4)^2 has a minimum value of 0 and it is an increasing function. Hence the maximum value tends towards infinite. Hence the range is [0, infinite).
2. The function y = 3(x-4)^2 has a minimum value of 0 and it is an increasing function. Hence the maximum value tends towards infinite. Hence the range is [0, infinite).
3. y = [x] + 4 (where [x] = greatest integer function). This function is an increasing function with a minimum value towards negative infinity and the maximum value tends towards the positive side of infinity.
=> Range of y = [x] + 4 is (-infinite, infinite).
4. y = -5x+4 is a continuous increasing function without any exceptions.
=> Range of y = -5x+4 is (-infinite,infinite)
Therefore, none of the functions has their range from (-infinity,4].
Step-by-step explanation: