a class has ten girls and three boys. if the teacher randomly picks ten students,what is the probability that he will pick all girls?
Answer:
10/13
Step-by-step explanation:
You will first add all the students the mentioned which gives you 13 then since they ask what is the probability it the teacher would pick girls. You know there's 10 girls and 3 boys so it would be 10/13.
While vacationiong, you decided to go bungee jumping off a cliff into the river. Your height as a function of time is modeled by the function h(t)= -16t^2+16t+370, where t is time in seconds and h is the height in feet.
When did u hi the water? Round your answer to the nearest hundreth?
Answer:
5.33 Seconds
Step-by-step explanation:
This is because you have to do the quadratic equation and solve.
The time required to hi the water is 5.33 seconds.
What is a quadratic equation?A quadratic equation is a second-order polynomial equation in a single variable x as ax^2+bx+c=0 with a ≠ 0 . A quadratic equation as an equation of degree 2, meaning that the highest exponent of this function is 2.
For the given situation,
The function is h(t)= -16t^2+16t+370
The roots of this function can be found by using the formula,
[tex]t=\frac{-b+\sqrt{b^{2}-4ac } }{2a}[/tex] or [tex]t=\frac{-b-\sqrt{b^{2}-4ac } }{2a}[/tex]
Here, a=-16, b=16, c=370
⇒ [tex]t=\frac{-16+\sqrt{16^{2}-4(-16)(370) } }{2(-16)}[/tex] or [tex]t=\frac{-16-\sqrt{16^{2}-4(-16)(370) } }{2(-16)}[/tex]
⇒ [tex]t=\frac{-16+\sqrt{23936} }{-32}[/tex] or [tex]t=\frac{-16-\sqrt{23936} }{-32}[/tex]
⇒ [tex]t=\frac{-16+154.712}{-32}[/tex] or [tex]t=\frac{-16-154.712}{-32}[/tex]
⇒ [tex]t=\frac{138.712}{-32}[/tex] or [tex]t=\frac{-170.712}{-32}[/tex]
⇒ [tex]t=-4.33[/tex] or [tex]t=5.33[/tex]
Time cannot be negative. So the value is 5.33.
Hence we can conclude that the time required to hi the water is 5.33 seconds.
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4. Suppose 11 out of 17 students said they were attending the football game. How many students out of 875 would you expect to attend the football game?
Please help me out ill mark brainliest
We have to basically multiply:
11/17 x 475
And simplifying that we get
307.35
And since there can't be .35 person
So out final answer is 307
pls pls brainlist
This recipe makes 20 cupcakes. Deepak only wants to make 15 cupcakes. How much of each ingredient does he need? Recipe: Makes 20 cupcakes 10 ounces butter 12 ounces sugar 8 ounces flour 4 eggs
Answer:
9.6 ounces of butter, 8 ounces of sugar, 12 ounces of flour, 4 eggs
Explanation: 20 / 16 = 4/5. 16 is four-fifths of 20. So multiply 4/5 with everything.
12 * 4/5 = 9.6 ounces
10 * 4/5 = 8 ounces
15 * 4/5 = 12 ounces
5 * 4/5 = 4 eggs
If 3 men can paint 4 houses in 5 days , how many days does it take for 7 men paint 14 houses ??? help me plz
Answer:
3men = 4houses= 5days
7men= 14houses= x days
14÷7 = 2days
find the value of x:)
Answer:
180 - 58 - 42 = x : sum of angles in a triangle add to 180
80 = x
Between 0900 and 10 30, a man walks a distance of 27 km. What is his average speed in km/h?
Answer:
18
Step-by-step explanation:
0900 to1030 is 1.5 h
Take 27/1.5
Then you will get the answer
The function f(t)=-16t^(2)+64 represents the height y (in feet ) of a water droplet t seconds after falling from an icicle. After how many seconds does the water droplet hit the ground
Answer:
The answer is two seconds
Step-by-step explanation:
Set the y to 0 as we are looking for the height when f(t) has hit the ground. Then factor and the two zeros of the function are -2 and 2. because the -2 is an answer that that cannot make sense for time in a real world scenario, the answer is the positive zero, or two. :-)
There are 255 calories in 6 ounces of a type of ice cream. How many calories are in 8 ounces of that ice cream?
Answer:
340
Step-by-step explanation:
255 divided by 6 equals 42.5
255 plus 42.5 times 2
Consider the division expression 7 ½ ÷ 2. Select all multiplication equations that correspond to this division expression.
Answer:
i dunno
Step-by-step explanation:
but i need the points to ask questions
Someone help me pls
the answer is A
5^-8 × 5^4= 5^-8+4
= 5^-4
= 1/5^4
Help me with this please!!!!!!!
Answer:
The answer is 8.54
Graph the points (0, 6) and (-8, 0). Which of the following points would create a right triangle?
A (-6,8)
B(-8,6)
C(8, -6)
D(6,-8)
Answer:
D, I think. Screenshot attached with the points.
Step-by-step explanation:
We have given two points (0, 6) and (-8, 0). The third point (8, -6) will make a complete right-angle triangle.
What is the right triangle?
A right-angle triangle is a triangle that has a side opposite to the right angle the largest side and is referred to as the hypotenuse. The angle of a right angle is always 90 degrees.
We have given two points (0, 6) and (-8, 0). we want to find Which of the following points would create a right triangle.
We have mentioned the points on the graph that represent a right-angle triangle. we know that the point (8, -6) will make a complete right-angle triangle.
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What was Jackie's mistake?
Jackie is asked to find the value of x in the following set of complementary anges.
Answer:
x=37
Step-by-step explanation:
Complementary angles are a set of 2 angles that when added together, add up to 90. In order to solve for x, both angles have to be added and set to be equal to 90... but Jackie only used one of the angles, not both. The correct equation is: x+16+x=90
Answer:
Jackie forgot to add variable X
Step-by-step explanation:
Jackie Did
X +16= 90
equation :
x+x+16= 90
he total cost of a vase of spring flowers at a flower shop depends on the number of flowers ordered. The vase costs $3, and each flower costs $2.50. Which equation can be used to findc,the total cost of the vase withfflowers?
Answer:
3+2.50x
Step-by-step explanation
x represents how many flowers you bought which you mulitply with 2.50 since each flower is 2.50 dollars. Then you add 3 since the cost of the vase is 3 dollars.
The radius of a circle is 7 inches. What is the circle's area?
r=7 in
Use 3.14 for .
square inches
Answer:
153.86
Step-by-step explanation:
3.14 x (7x7) = 153.86
There are 6 marbles in a bag. are blue and 2 are red. What is the probability of
drawing 4 marbles that are all blue?
3 is to 2 is the probability of drawing 4 marbles that are all blue.
hello please help i’ll give brainliest
Answer:
Option B) His teachings became government philosophy.
Express 9+9+9+9 as a single multiplication operation.
Answer:
9 x 4
Step-by-step explanation:
Cada material en sus distintos estados de agregacion, cambia de volumen de forma diferente, sin embargo todos lo hacen en cierta medida. A esta propiedad se le llama
La respuesta correcta para esta pregunta abierta es la siguiente.
Aunque no se anexaron opciones o incisos para contestar, podemos comentar lo siguiente.
Cada material en sus distintos estados de agregación, cambia de volumen de forma diferente, sin embargo todos lo hacen en cierta medida. A esta propiedad se le llama Estados de Agregación de la Materia.
Las substancias cambian su composición debido a la presión o al cambio de temperatura a la que son sometidos. A ese proceso se le conoce como el estado de agregación de la materia, cuando las moléculas y átomos que constituyen esa matera se ve sometido a una transformación en su composición.
Podemos reconocer comúnmente cuatro estados de transformación de la materia, que son, el estado de plasma, el estado gaseoso, el estado líquido y el estado sólido
Mia went for a long bike ride. She rode 10.25 kilometers each hour for 4.25 hours, how far did Mia travel on her bike ride?
•44.5625 km
•43.5625 km
•40.5000 km
•14.5000 km
Answer:
B..... 43.5625 km
Step-by-step explanation:
explain why 13x +1 = 11x+9
Answer:
x=4
Step-by-step explanation:
13x+1 = 11x+9
13x-11x = 9-1
2x = 8
x = 4
Answer:
53 = 53
Step-by-step explanation:
13x+1=11x+9 13(4)+1=11(4)+9
13x=11x+8 52+1=44+9
2x=8 53=53
x=4
I need help with this question
Answer:
1 <—5⁰
25<—5²
1/25<—5-²
5<—5¹
Work out
(8×10^-2)−(4×10^-4)
Give your answer in standard form.
Answer:
7.96 x 10^2
Step-by-step explanation:
Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the
10
. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.
The standard form of [tex]8\times10^{-2} - 4\times10^{-4}[/tex] is [tex]\frac{38}{5000}[/tex].
What is a numerical expression?A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.
Given, [tex]8\times10^{-2} - 4\times10^{-4}[/tex].
[tex]= \frac{8}{10^2} - \frac{4}{10^4}[/tex].
[tex]= \frac{8}{100} - \frac{4}{10000}[/tex].
[tex]= \frac{80 - 4}{10000}[/tex].
[tex]= \frac{76}{10000}[/tex].
[tex]= \frac{38}{5000}[/tex].
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Find the percent error in this situation:
Estimated value: 56
Actual value: 43
23.2%
0.302%
30.2%
0.232%
Answer:
30.2%
Step-by-step explanation:
Use the percent error formula:
| (experimental - actual) / actual | x 100
Plug in the experimental and actual values:
| (experimental - actual) / actual | x 100
| (56 - 43 ) / 43 | x 100
(13 / 43) x 100
= 30.2
So, the percent error is 30.2%
Write the definition of "congruent" in your own words.
Answer:
The same shapes but flipped or turned.
Step-by-step explanation:
Answer:
the same shape and size but we allowed to flip slide or turn
hope this help
What is the slope of the straight line that goes
through (1, 8) and (3, 4) ?
Answer:
-2
Step-by-step explanation:
Slope of the line
[tex] = \frac{8 - 4}{1 - 3} \\ \\ = \frac{4}{ - 2} \\ \\ = - 2[/tex]
Honestly I do not like bullies. If you are a bully than STOP.
Answer:
lol i don't like bullies either
i mean...i say that now...but in first grade i used to be a bully....we don't talk about that tho
anyways have a nice day and show them bullies who's boss
Exactly no one likes bullies :)
PLEASE HELP EASY MATH!!!!
Exam
The blueprint's scale is
1 inch : 9 feet. If the gym's
area is 52 square inches on the
blueprint, what is the actual
square footage of the gym?
The area of the actual gym
is_square feet.
Answer:
4212 square feet.
Step-by-step explanation:
If the blueprint's scale is 1 inch : 9 feet.
Square both sides
(1in)² = (9ft)²
1in² = 81ft²
Given the gym's area as 52 square inches, hence;
52in² = x
Divide both expressions
1/52 = 81/x
x = 52 * 81
x = 4212ft²
Hence the area of the actual gym is 4212 square feet.