Answer:
She reaches her maximum height after 0.25 secondsStep-by-step explanation:
The question is not properly structured and the equation is also incorrect. Here is the correct question.
You and some friends went to a haunted house on Halloween. The mummy scared one friend so much that she jumped into the air! The equation h= -4t²+ 2t models her jump where h is her jumps height in feet t seconds after the mummy scares her. When did she reach her maximum.
Give the equation h= -4t²+ 2t that models my friend jump where h is her jumps height in feet t seconds, At maximum height, her velocity will be zero i.e
Vmax = 0m/s
Velocity is the rate of change in distance of a body i.e V = dh/dt
Given h= -4t²+ 2t
V = dh/dt = -8t+2
Since v = 0m/s
0 = -8t+2
-8t = -2
t = -2/-8
t = 0.25 secs
She reaches her maximum height after 0.25 seconds
What is 18.706 rounded to the nearest hundredth
Answer:
18.71
Step-by-step explanation:
In the equation, t is a constant. If the equation has no real solutions, what could be the value of t?
2x2 − 4x = t
A) −3
B) −1
C) 1
D) 3
Answer:
t = - 3
Step-by-step explanation:
2x2 - 4x = t
2x2 - 4x - t = 0
a = 2, b = - 4, c = - t
b2 - 4ac = 0
(-4) - 4(2)(-t) = 0
16 + 8t = 0
8t = - 16
t = - 3
good day, and be safe
∵∴∵∴∵∴∵∴∵
⊕ΘΞΠΤ⊕
∵∴∵∴∵∴∵∴∵
A bank loans a stylist $7,500 for 1 year at an interest rate of 6% per year to purchase a car. What is the yearly interest payment?
Answer:
450
Step-by-step explanation:
7500 times 6% is 450 your equation will be PRT principal which is the amount you started with times rate which is the % times time in years
A political scientist has 12 volunteers for a political opinlon survey. The political scientist selects 2 of the volunteers to
complete different variations of the survey. How many ways can this be done?
132
144
169
196
In ΔGHI, the measure of ∠I=90°, HI = 3 feet, and IG = 2.3 feet. Find the measure of ∠H to the nearest degree.
Answer:
37
Step-by-step explanation:
Answer:
37
Step-by-step explanation:
37.476 = 37
Jason is a very good bowler and has proven over the
course of a season of league play that he gets a
STRIKE 50% of the time. Using this empirical
probability what is the probability that Jason will get
exactly 7 strikes out of 10 attempts?
Answer:
The probability that Jason will get exactly 7 strikes out of 10 attempts is 0.117.
Step-by-step explanation:
We are given that Jason is a very good bowler and has proven over the course of a season of league play that he gets a STRIKE 50% of the time.
Also, Jason has been given 10 attempts.
The above situation can be represented through binomial distribution;
[tex]P(X = r) = \binom{n}{r} \times p^{r} \times (1-p)^{n-r};x=0,1,2,3,.......[/tex]
where, n = number trials (samples) taken = 10 attempts
r = number of success = 7 strikes
p = probability of success which in our question is % of the time
he gets a strike, i.e; p = 50%
Let X = Number of strikes Jason get
So, X ~ Binom(n = 10, p = 0.50)
Now, probability that Jason will get exactly 7 strikes out of 10 attempts is given by = P(X = 7)
P(X = 7) = [tex]\binom{10}{7} \times 0.50^{7} \times (1-0.50)^{10-7}[/tex]
= [tex]120 \times 0.50^{7} \times 0.50^{3}[/tex]
= [tex]120 \times 0.50^{10}[/tex]
= 0.117
Therefore, the probability that Jason will get exactly 7 strikes out of 10 attempts is 0.117.
The probability that Jason will get exactly 7 strikes out of 10 attempts can be calculated using the binomial probability formula with a 50% strike rate.
The probability that Jason will get exactly 7 strikes out of 10 attempts, given a 50% strike rate, can be calculated using the binomial probability formula:
P(X = k) = C(n, k) * p[tex]^{(k)}[/tex] * (1 - p)[tex]^{(n - k)}[/tex]
n = number of trials (10)k = number of successful trials (7)p = probability of success (0.5, or 50%)Using the formula, we get:
P(X = 7) = C(10, 7) * (0.5)⁷ * (0.5)⁽¹⁰⁻⁷⁾
Calculating the combination C(10, 7) and following the formula yields the specific probability value for Jason to get exactly 7 strikes in 10 attempts.
Evaluate sin 5pi/4
Thank you
Answer:
-sqrt(2)/2
Step-by-step explanation:
5pi/4 lies in the third quadrant with basic angle: 5pi/4 - pi = pi/4
sin(pi/4) = sqrt(2)/2
Since it's in quadrant 3, sin would be negative
sin(5pi/4) = -sqrt(2)/2
sqrt: square root
When the above math expression is evaluated, the value of sin(5π/4) is -√2/2.
How is this so?
To evaluate sin(5π/4), we can use the unit circle or trigonometric identities.
The angle 5π/4 is located in the third quadrant of the unit circle, where the sine function is negative.
In the unit circle, at 5π/4, the corresponding point is (-√2/2, -√2/2). The y-coordinate of this point represents the value of the sine function.
Therefore, sin(5π/4) = -√2/2. hence, the value of sin(5π/4) is -√2/2.
Learn more about math expression at:
https://brainly.com/question/1859113
#SPJ6
The cost of a ball is $0.58. David pays for the ball with
a $1 bill. How much change should David get back?
A $0.42
B $0.43
C $0.52
D $1.58
Answer:
A
Step-by-step explanation:
It's A just trust me I'm not doing the work lol
Answer:
The answer would be A. $.042
Step-by-step explanation:
For you to find out the answer to how much change he should get back, subtracting the two numbers will get you the answer
1.00 - .58 = .42
Feel free to let me know if you need more help. :)
Solve for x
9(x+1)=25+x
Answer:
x = 2
Step-by-step explanation:
9(x+1) = 25+x
Distribute
9x +9 = 25+x
Subtract x from each side
9x-x +9 = 25+x-x
8x +9 = 25
Subtract 9 from each side
8x+9-9 = 25-9
8x = 16
Divide each side by 8
8x/8 = 16/8
x = 2
Check all of the following that are proper units for measuring length in the
U.S. system of units.
A. Grams
B. Feet
C. Inches
D. Kilometers
Answer:
all except kilometers
Step-by-step explanation:
Billy collects marbles. Each marble in his collection weighs about 4 ounces. His collection weighs about 20 pounds in all. About how many marbles are in his collection?
Marya plans to participate in a 20 km walk-a-thon. To prepare, she walked 4 km on Monday. She plans to increase her walk by 2 km each week until she reaches 20 km. Marya’s calculations: 4 + 2 = 6. 6 + 2 = 8. 8 + 2 = 10. 10 + 2 = 12. 12 + 2 = 14. 14 + 2 = 16. 16 + 2 = 18. 18 + 2 = 20. The equation representing Marya’s calculations is 4 + 2 w + 20. How many weeks will it take Marya to reach her goal of a 20 kilometer walk? 8 9 10 12
Answer: 8 weeks
Step-by-step explanation:
20 - 4 = 16
16 / 2 = 8
The correct answer is 8 weeks.
Which set of measurements will form a unique triangle?
angle measures of 45°, 45°, 90°
angle measures of 60°, 60°, 60°
side measures of 1 cm, 1 cm, 100 cm
side measures of 20 cm, 20 cm, 20 cm
Answer:
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Take the first two numbers (60 and 60) and add them, then compare it to the last number (60). If the answer from adding is greater than the 3rd number, you have your answer :) Hope this helps!
Pls someone explain to me how to do these problems and step by step explanation pls
Answer:
Option 1
Step-by-step explanation:
This is because in inequalities, the closed circle means greater/less than or equal to and the open circle means greater/less than. Since there is no line under the inequality, it is less than, therefore you need to use an open circle.
I really need help with this question.
Answer:
I got 4/5
Step-by-step explanation:
PLEASE HELP
Find the surface area of a triangular prism, base measures 6 cm, height measures 4 m, sides measure 5 cm and height of prism measures 10 cm
Answer:
v=99.215674164922cm^2
Sara goes shopping with $100 at the mall and she used th
calculate the amount of change she should receive. How
the end of the day?
100 - (12 + 17 + 7 + 2(4) + 3(5) + 4)
$37
$0
$42
$21
Answer:
$37
Step-by-step explanation:
2x4=8
3x5=15
12+17+7+8+15+4=63
100-63=37
$37
Answer:37
Step-by-step explanation: 12+17=29 29+7=36 36+8=44 44+15=59 59+4=63 And you 2(4) you multiply and 3(5) you also multiply
Then you subtract 100 and 63and get 37
7s-9=5 How do I get my answer?
Answer:
s = 2
Step-by-step explanation:
You want to isolate the variable so add 9 to both sides. That gives you 7s = 14. Now divide both sides by 7 to get s alone, and that equals s = 2. I hope this helps and please mark me brainliest!
Answer:
[tex]s = 2[/tex]
Step-by-step explanation:
[tex]7s - 9 = 5 \\ add \: 9 \: from \: both \: sides \\ \\ 7s = 14 \\ divide \: both \: sides \: by \: 7 \\ \\ s = 2[/tex]
Find the length of the second base of a trapezoid
with one base measuring 15 feet, a height of
7.6 feet, and an area of 98.8 square feet.
A. 9 ft
B. 10 ft
C. 11 ft
D. 12 ft
Answer:
11 ft
Step-by-step explanation:
The area of a trapezoid is given as:
A = ½(a + b)h
Where a = length of one base of the trapezoid = 15 ft
b = length of the second base of th trapezoid
h = height of the trapezoid = 7.6 ft
When the area is 98.8 ft², the length of the second base will be:
98.8 = ½(a + 15) * 7.6
2 * 98.8 = (a + 15) * 7.6
197.6 / 7.6 = (a + 15)
26 = (a + 15)
=> a = 26 - 15 = 11 ft
The length of the second base if the trapezoid is 11 ft.
Which choices are equations for the line shown below? Check all that apply.
A. y = 2x + 1
B. y = -0.5x + 1
C. y - 5 = -2(x+2)
D. y + 3 = -2x(x+2)
F. y = -2x + 1
Answer:
B and F
Step-by-step explanation:
it is a negative line and has a y intercept of 1
Answer: F | C | D
Step-by-step explanation: Because Im goated with the sauce
The table shows the results of a survey of students in two math classes. Find P(more than 1
hour of TV | 6th period class). Round to the nearest thousandth.
Did You Watch More Than One Hour of TV Last Night?
Answer:
0.545
Step-by-step explanation:
In the missing table the following information is shown:
Did You Watch More Than One Hour of TV Last Night?
3rd Period Class: Yes- 11 No- 6
6th Period Class: Yes- 12 No- 10
The probability that the student watched more than 1 hour of TV given that he/she belongs to 6th period class is:
P(more than 1 hour of TV | 6th period class) = 12/(12+10) = 0.545
The probability (more than thanhour of TV | 6th period class).and rounded to the nearest thousandth is:
0.545What is Probability?This refers to the chance occurrence of an event based on both dependent and independent variables.
Hence, from the complete question, there is the table which gives the following data;
Did You Watch More Than One Hour of TV Last Night?3rd Period Class: Yes- 11 No- 66th Period Class: Yes- 12 No- 10Hence, the probability that the student watched more than 1 hour of TV given that he/she belongs to 6th period class is:
= 12/(12+10) =
0.545
Read more about probability here:
https://brainly.com/question/24756209
Which graph shows a system of equations with exactly one solution?
Answer:
d
Step-by-step explanation:
The graph that shows a system of equations with exactly one solution is graph d
Which graph shows exactly one solution?From the question, we have the following parameters that can be used in our computation:
The graphs
The graph that shows a system of equations with exactly one solution is the graph where there is only one point of intersection on the functions
Using the above as a guide, we have the following:
The graph that shows exactly one solution is (d)
Read mroe about system of equations at
https://brainly.com/question/32583193
#SPJ3
Help me So the question is Enter the value for X that makes the equation -2x + 10 + 4x = 70 true
Answer:
30
Step-by-step explanation:
70-10 is 60 because you take it to the other side
then 4x minus 2x is 2x
then 2 divided by 60 is 30
so x=30
hope this helps!
Answer: X = 30
-2x + 10 + 4x = 70
-2x + 4x + 10 = 70
2x + 10 = 70
so the result is X = 30
its true
hope i helped
What is 4.5a+7+3.5a+2
Answer:
8a+9
Step-by-step explanation:
You have to add the like terms.
4.5a+7+3.5a+2
4.5a+3.5a=8a
7+2= 9
8a+9
complete the identity sin(2θ) sin(4θ) cos(2θ) cos(4θ) = ?
Answer:
Step-by-step explanation:
Factor the left hand side as a difference of squares:
(
cos
2
θ
+
sin
2
θ
)
(
cos
2
θ
−
sin
2
θ
)
=
cos
2
θ
−
sin
2
θ
Apply the pythagorean identity
cos
2
θ
+
sin
2
θ
=
1
:
1
(
cos
2
θ
−
sin
2
θ
)
=
cos
2
θ
−
sin
2
θ
cos
2
θ
−
sin
2
θ
=
cos
2
θ
−
sin
2
θ
L
H
S
=
R
H
S
Hopefully this helps!
Which is the graph of y = cos(x) + 3?
Answer:
(the image attached)
Step-by-step Explanation:
Amplitude: 1
Period: 2π
Phase Shift: 0 (0 to the right)
Vertical Shift: 3
An image is attached below for the graph of the function y = cos(x) + 3
What are trigonometric functions ?A function such as the sin, cos, tan, cot, sec, and cosec of an angle or an arc expressed in terms of the ratios of pairs of sides of a right angled triangle.
The graph of cos(x) is a periodic function with time period 2π. After every 2π it repeats itself so we call it as a periodic function.
for x = 0
y = cos(0) + 3
y = 1 + 3
y = 4
for x = π/2
y = cos(π/2) + 3
y = 0 + 3
y = 3
An image graph of cos(x) + 3 is given try out different vales of x to understand more about how the function behaves.
Learn more about Trigonometric functions here :
https://brainly.com/question/14746686
#SPJ6
Simplify (1 − sin x)(1 + sin x). (2 points)
a
1
b
cos2 x
c
sin2 x
d
tan2 x
Answer:
cos²x
Step-by-step explanation:
(a-b)(a+b)=a²-b²
sin²x+cos²x=1 => cos²x=1-sin²x
(1 − sin x)(1 + sin x)=1-sin²x=cos²x
The simplified value of the (1 − sin x)(1 + sin x) is cos² x.
The correct option is B.
To simplify the expression (1 − sin x)(1 + sin x), we can use the identity for the difference of squares, which states that (a − b)(a + b) = a² − b².
So, it can written as
(1 − sin x)(1 + sin x) = (1)² − (sin x)².
Now, using the identity sin² x + cos² x = 1, we can substitute (sin x)² with (1 − cos² x):
(1)² − (sin x)² = 1 − (1 − cos² x) = 1 − 1 + cos² x = cos² x.
Therefore, the simplified expression is cos² x.
Learn more about Trigonometric Identities here:
https://brainly.com/question/24377281
#SPJ2
Given the following exponential function, identify whether the change represents growth or decay, and
determine the percentage rate of increase or decrease. y=3400(1.97)^x
Answer: 97% growth rate.
Step-by-step explanation:
Hi, to answer this question we have to analyze exponential function:
A = P (1 + r) t
Where:
p = initial value
r = growth or decay rate (decimal form)
t= number of time intervals
A = value after t intervals
Replacing with the values given:
y=3400(1.97)^x
Where the term 1.97 = 1 + r
Solving for r:
1.97-1 = r
0.97 =r
Since the rate is positive, it is a growth rate.
To determine the percentage we have to multiply it by 100
0.97 x 100 = 97%
Feel free to ask for more if needed or if you did not understand something.
whats 25 times 25% :)
Answer:
the answer is in the
Step-by-step explanation:
Answer:
6.25
Step-by-step explanation:
Marty bought a shirt for $9.50, sandals for $15.50, shorts for $11.75, and sunscreen for $5.25. Use mental math to find the total amount he spent. Explain.
Answer:
42
Step-by-step explanation:
9.5+15.5=25. 11.75+5.25=17. 25+17=42. That should explain it. I hope this helps.
Answer:
Marty spent $42. How I got this answer is I added 11.75+5.25 first, equaling 17. Then I added 15.50 to 17, equaling 32.50. Finally I added 9.50 to 32.50 equaling 42.
Step-by-step explanation:
9.50+15.50+11.75+5.25= $42