A study showed that 25% of the students drive themselves to school.
Based on the suggested probability, in a class of 18 students, about how
many students would you expect to drive themselves to school?
3
4
6
None of the above.
Answer:
4
Step-by-step explanation:
how do you find the vertex of a quadratic equation in standard form?
Answer:
Step-by-step explanation:
The standard form of a quadratic equation is ax² + bx + c, where a ≠ 0.
Given that the axis of symmetry occurs at x = h, then we can assume that the h coordinate of the vertex is the same as the x-coordinate in an ordered pair, (x, y).
In order to find the vertex, (h, k), use the following formula to solve for the value of h:
[tex]h = \frac{-b}{2a}[/tex].
Example:To demonstrate this concept, let's say that we're given the following quadratic equation: 2x² + 8x + 8, where a = 2, b = 8, and c = 8. Substitute the values of a and b into the given equation for solving the x-coordinate (h) of the vertex:
[tex]h = \frac{-b}{2a}[/tex]
[tex]h = \frac{-8}{2(2)} = \frac{-8}{4} = -2[/tex]
Therefore, h = -2.
Next, substitute the value of h = -2 into the given quadratic equation in order to solve for its corresponding y-coordinate (k ) of the vertex:
k = 2x² + 8x + 8
where: a = 2, b = 8, and c = 8
k = 2(-2)² + 8(-2) + 8
k = 2(4) - 16 + 8
k = 8 - 16 + 8
k = 0
Therefore, the vertex of the quadratic equation, 2x² + 8x + 8 is (-2, 0).
Please help need this like rnnnnn!!
The table shows the temperature (y) at different altitudes (x). This is a linear relationship. Use the equation y = −0.004x + 79 to determine the temperature at an altitude of 5,000 feet.
Altitude (ft), x 0 2,000 4,000 6,000 8,000 10,000 12,000
Temperature (°F), y 79 71 63 55 47 39 31
The temperature at an altitude of 5,000 feet is
°F.
Answer:
59 degrees
Step-by-step explanation:
you plug in 5000 as x and solve
what are the numbers to them?
Answer:
I believe for top last number is 49
and bottom first empty is 11 and second empty is 19
Step-by-step explanation:
Answer:
49, 9, 18
Step-by-step explanation:
7×1= 7
7×3=21
7×5=5
7×7=49
3×1=1
3×3=9
3×6=18
3×9=27
please help me! two step equations
Answer:
7663 / 97 = 79
Width: 79m
61+61=122
292-122=170
170/2=85
Length: 85m
For an experiment, the temperature of a liquid must stay above 60.7°F. The starting temperature of the liquid is 90.1°F. It is placed in a cooler, which lowers its temperature 4°F each minute. How many minutes can the liquid can stay in the cooler?
Select from the drop-down menus to correctly complete the statement. The liquid can stay in the cooler |___| minutes.
A. At most 7.35
B. At least 7.35
C. fewer than 7.35
D. more than 7.35
Answer:
The answer is C I took the k12 quiz and it said this is correct. Please mark brainliest. Thank you!!!
Step-by-step explanation:
The liquid can stay in the cooler |x≤7.35| minutes. Therefore, option A is the correct answer.
What are inequalities?Inequalities are the mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.
Given that, for an experiment, the temperature of a liquid must stay above 60.7°F.
The starting temperature of the liquid is 90.1°F.
Here, 90.1-60.7
= 29.4
It is placed in a cooler, which lowers its temperature 4°F each minute.
Now, number of minutes =29.4/4
= 7.35 minutes
Therefore, option A is the correct answer.
To learn more about the inequalities visit:
https://brainly.com/question/20383699.
#SPJ2
Katie brought a birthday treat to school. She has 40 pieces of candy to share equally with the students in her class. If there are n students in the class, which expression shows how many pieces of candy each student will get?
Answer:
Step-by-step explanation:
Pieces = 40/n
Pieces = the number of pieces each student will get
n = the number of students in the class.
n
n has an upper limit of 40. Each student will get exactly 1 piece of candy
Other values of n could be
1 2 4 8 5 10 20 40
Answer:
2 candie each because if there 20 and 40 candie it well be 2:)`
21
18
15
12
9
6
3
1 2 3 4 5 6 7
Answer:
What is the question?
Step-by-step explanation:
DONT CLICK ON THIS IF YOU DONT KNOW THE RIGHT ANSWER.
State what additional information is required in order to know that the triangles are congruent for the reason given.
Answer:
[tex]\sqrt{x} \int\limits^a_b {x} \, dx \pi[/tex]Step-by-step explanation:
Find the perimeter and area of the given triangle. Round to the nearest tenth. A (‐1, 3 ), B( 8, 3), C( ‐1, 5)
(MUST SHOW WORK)
Answer:
9 unit²Step-by-step explanation:
Plot the given points:
A (‐1, 3 ), B( 8, 3), C( ‐1, 5)We see ABC is a right triangle.
Find the length of AB and AC:
AB = 8 - (-1) = 9AC = 5 - 3 = 2Find the area:
A = (1/2)bhA = (1/2)*2*9 = 9AB:-
√(8+1)²+(3-3)²√9²9BC
√(8+1)²+(3-5)²√9²+2²√81+4√859.2AC
√(-1+1)²+(3-5)²√2²2Perimeter
9+9.2+220.2unitsArea
1/2(2)(9)9units²what is the difference between absolute value and opposites
Answer: Opposites are the reversed place on the number line, (etc. -5 to 5) while absolute value is the number's distance from zero.
In a school of 600, a survey was conducted with 10% of the population. The survey was conducted to narrow the choices for the new mascot. What was the frequency of Bears, if the following was the result of the survey?
Bears=22
Panthers=15
Beavers=2
Jaguars=21 no virus file answers
Answer:
36.67%
Step-by-step explanation:
So if 600 kids in total and 10% participate, then we have 60 kids to work with. Panthers plus beavers plus jaguars = 2 + 15 + 21 = 38. 38 + 22 = the total 60 kids. 22 is 36.67% percent of 60 because that's what 22/60 equals.
What's the most reliable way of converting kilograms to pounds?
Answer:
K(2.2)= LBS
Step-by-step explanation:
hey i need help solving a Krypto
numbers: 13, 16, 23, 1, 3 equals: 20
thanks in advanced :)
Theres four solutions which you wont find with most Krypto solvers since it uses .333 repeating.
The solutions are:
16 / 3 = 5.3333333333333
5.3333333333333 - 1 = 4.3333333333333
13 / 4.3333333333333 = 3
23 - 3 = 20
13 / 3 = 4.3333333333333
4.3333333333333 + 1 = 5.3333333333333
16 / 5.3333333333333 = 3
23 - 3 = 20
23 / 3 = 7.6666666666667
7.6666666666667 - 1 = 6.6666666666667
16 - 13 = 3
6.6666666666667 x 3 = 20
16 - 13 = 3
23 / 3 = 7.6666666666667
7.6666666666667 - 1 = 6.6666666666667
6.6666666666667 x 3 = 20
Jackie runs and dances for 75 minutes every day.
She dances 25 minutes more than she runs.
ole
Part A: Write a pair of linear equations to show the relationship between the number of minutes Jackie
runs (x) and the number of minutes she dances (y) every day.
Part B: How much time does Jackie spend running every day? Show your work.
Part C: What is the greatest amount of time she could spend dancing every day, given she will take a
run. Explain your reasoning.
Answer:
Step-by-step explanation:
Part A: Write a pair of linear equations to show the relationship between the number of minutes Jackie
runs (x) and the number of minutes she dances (y) every day.
x=x/2 y= 2x
Part B: How much time does Jackie spend running every day? Show your work.
75 - 25 = 50 /2 =25
total dance number of activities
minutes exceed
run=25 dance=50
Part C: What is the greatest amount of time she could spend dancing every day, given she will take a
run. Explain your reasoning.
24 hours /3 = 8 hours
dance:16 hours
run:8 hours
RATIO
1 : 2
run dance
In football, the path that a defender must run to
tackle the ball carrier is called the path of pursuit.
If the ball carrier runs 40 yards to the end zone
and the path of pursuit is 45 yards, how far
apart were the ball carrier and defender when
they started? Answer with appropriate
precision.
l
In GeoGebra, you should see a sketch of William's kite. You'll use the sketch to find the lengths of the dowels needed to make the kite. William has
Indicated that he would like the kite to be AD = 120 cm wide across the bottom, which is labeled on the sketch. Using the width of the kite and the
fact that the kite is made from two congruent right triangles, what is AC?
Answer:
Step-by-step explanation:
I really need help with this please!!
Answer:
Step-by-step explanation:
m) yx(y + 1) + 4x(y +1) - 5(y +1) = (y + 1) [ yx + 4x - 5 ]
n) 6p² - 3p³ = 3p² (2 - p)
0) 4x⁴ + 2x = 2x(2x³ + 1)
Eliminate the parameter, t, in the parametric equations, x = 2cos(t) and y = 2sin(t).
A) 4 x2 + 4 y2 = 4
B) x2 + y2 = 2
C) 2 x2 + 2 y2 = 4
D) x2 + y2 = 4
Answer:
D: [tex]x^2+y^2 = 4[/tex]
Step-by-step explanation:
Square each one, and add them together. Then collect 4 from both.
[tex]x^2 = 4 cos^2t; y^2 = 4sin^2 t \\x^2 + y^2 = 4( cos^2t+sin^2t) \rightarrow x^2+y^2=4[/tex]
Write a numerical expression for: 100 less than x
Hello there! :)
The answer is: x-100
This means 100 less than x.
Hope this helps!
~Just a felicitous girlie
#HaveAnAwesomeDay
[tex]SilentNature[/tex]
Answer:
X - 100
Step-by-step explanation:
9month to 3/2 year express the following in ratio
Answer:
1 : 2
Step-by-step explanation:
in ratios both numerator and denominator should be in same units/measurement
so 3/2 year = 3/2 * 12 months
= 3 * 6
= 18 months
ratio is 9 : 18
1 : 2
Find sin(2x), cos(2x), and tan(2x) from the given information.
sec(x) = 8, x in Quadrant IV
sin(2x) = 3
х
cos(2x) =
tan(2x) =
Need Help?
Read It
If x terminates in the fourth quadrant, then we know that sin(x) < 0 and cos(x) > 0. Given that sec(x) = 8, we immediately have
cos(x) = 1/sec(x) = 1/8
Recall the Pythagorean identity,
cos²(x) + sin²(x) = 1
Then it follows that
sin(x) = -√(1 - cos²(x)) = -3√7/8
Now recall the double angle identities,
sin(2x) = 2 sin(x) cos(x)
cos(2x) = cos²(x) - sin²(x)
Then
sin(2x) = 2 (-3√7/8) (1/8) = -6√7/64 = -3√7/32
cos(2x) = (1/8)² - (-3√7/8)² = -62/64 = -31/32
By definition of tangent,
tan(x) = sin(x)/cos(x)
Then
tan(2x) = sin(2x)/cos(2x) = (=3√7/32) / (-31/32) = 3√7/31
Noah has 5/6 of pizza and he eats 2/3 of it for lunch. What fraction of whole pizza did Noah eat?
y is an integer. −2 < y ≤ 3
Write down all the possible values of y.
Answer:
{-1, 0, 1, 2, 3}
Step-by-step explanation:
We list all the integer y values that satisfy −2 < y ≤ 3: {-1, 0, 1, 2, 3}
HELP! im literally panicking here
aAnswer:
Step-by-step explanation:
Answer:
i would do c because u are about 2 look at it with a graph and do y2-y1/x2-x1 with the length times height but it the other 2 u would just basically multiply the 2 numbers
Step-by-step explanation:
Plz help me, thx you
Answer:
it is a raydar. i wonder what it is looking for
Step-by-step explanation:
Each table at a restaurant can seat 4 people. If a group of 11 people needs to be seated, how many tables will be needed?
A. 1
B. 4
C. 2
D. 3
Answer:
d
Step-by-step explanation:
Jonah can paint a house by himself in 12 hours. Steve can do the same job in eight hours. How long will it taken them to complete the job together?
Answer: c. 4.8 hours
Step-by-step explanation:
The slope of a line with points (0,2) and (5,12)
Answer:
not enough evidence
Step-by-step explanation:
Kim's school is selling tickets to a play. On the first day of ticket sales the school sold 5 senior citizen tickets and 6 child tickets for a total of $148. The school took in $189 on the second day by selling 7 senior citizen tickets and 7 child tickets. Find the price of a senior citizen ticket andthe price of a child ticket.
Answer:
Child $13 and Adult $14
Step-by-Step
x=cost of child tix
y=cost of adult tix
first day: 5y+6x=148
2nd day: 7y+7x=189
series of equations so solve for one variable
7y=189-7x
y=27-x
then plug into other equation
5(27-x)+6x=148
135-5x+6x=148
x=148-135
x=13
then plug into y equation
y=27-13
y=14
