Answer:
ooooh Mthswath again. a=8 b=1/8 c=4/8 or 1/2
Step-by-step explanation:
a= there are 8 outcomes you can multiply the outcomes. 2×2×2=8
b= (i don't want to insert a picture again, as I already did for the last one you asked) So it is 1/8
c= Again, list out all the possibilities and you will find there are 4 with at least 2 tails or simplify it, 1/2
The population of a bacteria after x number of hours is modeled by the expression 1 , 000 ( 0 . 75 ) x . What is the rate of decay of the population of bacteria? A. 25% B. 75% C. 0.75% D. 1.25%
Answer:
A. 25%
Step-by-step explanation:
If you multiply something by 0.75, you're multiplying it by 75%, and that means you're losing 25% each time, so the rate of decay is 25%
Answer:
A 25%
Step-by-step explanation
the first thing we want to do for this problem is look at the exponential decay formula. its y=a(1-b)^x. "y" represents the final amount, "a" represents the original amount, and "b" represents the decay factor.
in this situation, .75 is the decay factor and our original amount is 1000. so to find out the decay factor, we need to subtract .75 from 1. you would get .25. .25 in percentage form is 25%.
we can double check by putting .25 in the orginal exponential decay formula. y=1000(1-.25)^x. 1-.25 equals .75, so now the equation is the same as our original equation, y=1000(0.75)^x
A right triangle has sides of length 3, 4, and x. Find x, if x were one of the legs. (Round your answer to the nearest hundredth)
Answer:
x ≈ 2.65(nearest hundredth)
Step-by-step explanation:
Base on your question the triangle is a right angle triangle. This means the triangle should obey the Pythagoras theorem.
Pythagoras theorem says
c² = a² + b²
where
c = hypotenuse of the triangle
a and b are called the legs of the triangle.
The hypotenuse is the longest side of the triangle.
Recall your question says the unknown side x is one of the legs of the triangle. That means the other legs will definitely be 3 since the hypotenuse should be the longest side of the triangle which is 4.
Using Pythagoras theorem
4² = 3² + x²
16 - 9 = x²
7 = x²
square root both sides
x = √7
x = 2.64575131106
x ≈ 2.65(nearest hundredth)
a x 10^5 + 2a x 10^4 = 7200000 and a x 10^5 - a x 10^4 = 5400000
Find the value of a
Answer:
60
Step-by-step explanation:
Looking at case 1.
a * 10^5 + 2a * 10 ^4= 7200000
a * 10 * 10^4 + 2a *10 ^4 =7200000
[10a + 2a] * 10^4= 7200000
12a= 7200000/ 10000
12a= 720
a= 720/12 = 60
Looking at case 2,
a * 10^5 - a * 10^4 = 5400000
a * 10 * 10^4 - a *10^4 = 5400000
10a* 10^ 4 - a * 10^ 4 = 5400000
[10a- a] *10^4 = 5400000
9a = 5400000/10000
9a= 540
a =540/9
a= 60
If the radius of a cone is 5 in and the height is 12 in what is the volume of the cone
Answer:
Volume of cone = 314 in³
Step-by-step explanation:
Radius of the cone (r) = 5 in
Height of the cone (h) = 12 in
[tex]Voume \: of \: the \: cone = \frac{1}{3} \pi {r}^{2} h \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{1}{3} \times \pi \times {(5)}^{2} \times 12\\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{1}{3} \times \pi \times 25 \times 12\\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{1}{3} \times \pi \times 300 \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \pi \times 100\\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 314 \: {in}^{3} [/tex]
P=-462 +66 - 9
Q = 762 – 26 – 5
Answer:
P=462+66-9
=528-9
=519
Q=762-26-5
=762-31
: =731
You roll a fair six-sided die twice. The first roll shows a five and the second roll shows a six.
show work please Thanks!
Answer:
1/36Step-by-step explanation:
These are independent events, so we will just multiply the two probabilities together.
1/6 x 1/6 = 1/36
I'm always happy to help :)
The probability should be [tex]1\div 36[/tex].
Calculation of the probability:Since You roll a fair six-sided die twice. The first roll shows a five and the second roll shows a six.
So here the probability should be
[tex]= 1\div 6 \times 1\div 6 = 1\div 36[/tex]
Hence, we can conclude that The probability should be [tex]1\div 36[/tex].
Learn more about probability here: https://brainly.com/question/21909925
Point B has coordinates (5,2). The x-coordinate of point Ais - 1. The distance between point A and
point B is 10 units. What are the possible coordinates of point A?
The possible coordinates of point A are 1
(Type an ordered pair. Use a comma to separate answers as needed.)
Answer:
[tex]\large \boxed{(-1,-6),(-1,10)}[/tex]
Step-by-step explanation:
Point A must be on a circle with centre at (5,2) and radius 10.
The centre-radius form for the equation of a circle is
(x – h)² + (y – k)² = r², where
(h,k) = the coordinates of the centre and
r = the radius
Thus, the equation for this circle is
(x - 5)² + ( y - 2)² = 10²
Substitute the value for x and solve for y:
[tex]\begin{array}{rcl}\\(x - 5)^{2} +( y - 2)^{2} &=& 10^{2}\\(-1 - 5)^{2} +( y - 2)^{2} &=& 100\\(-6)^{2} +( y - 2)^{2} &=& 100\\36 +( y - 2)^{2} &=& 100\\( y - 2)^{2} &=& 64\\y - 2 = -8 & \qquad & y - 2 = 8\\y = \mathbf{-6} & \qquad & y = \mathbf{10}\\\end{array}\\\text{The possible coordinates of A are $\large \boxed{\mathbf{(-1,-6),(-1,10)}}$}[/tex]
The figure below shows the circle intersecting the line x = -1 at (-1,-6) and (-1,10).
Will mark as brainliest if correct
Answer:
x=0.885622
Step-by-step explanation:
Dont forget to round
Answer:
0.77
Step-by-step explanation:
7=9x
9x/9
7=x
7/9=0.77777777777
Can someone answer this question please please help me I really need it if it’s correct I will mark you brainliest .
Formula for the perimeter of a quarter circle: C = ((pi x 2 x r) / 4) + r + r
32.13 = (6.28r / 4) + 2r
32.13 = 1.57r + 2r
32.13 = 3.57r
r = 9 yards
Hope this helps! :)
A circle has a radius of 5/6 units and is centered at (3.6, 7.8).
Write the equation of this circle.
Answer:
Circle Equation: ( x - 3.8 )^2 + ( y - 7.8 )^2 = 25/36
Step-by-step explanation:
* Knowing a circle equation is in the format (x – h)^2 + (y – k)^2 = r^2, with the center being at the point (h, k) and the radius being "r" *
Let us substitute values into this equation; provided ( 3.8, 7.8 ) is the center:
( x - 3.8 )^2 + ( y - 7.8 )^2 = r^2,
Now substitute value of r, or rather the radius 5/6:
( x - 3.8 )^2 + ( y - 7.8 )^2 = ( 5/6 )^2 ⇒
Circle Equation: ( x - 3.8 )^2 + ( y - 7.8 )^2 = 25/36
* Sorry this wasn't answered earlier *
What is the measure of angle abc if arc ac is 130 and arc de is 40
[tex]\left \{ {{y=2} \atop {x=2}} \right. x^{2} x^{2} x^{2} x^{2} x^{2} x^{2}[/tex]Answer:
A
Step-by-step explanation:
Solve.
A bag contains 2 red, 4 blue, and 4 yellow marbles. What is the probability of pulling a red marble, then a blue marble from the bag? (to the nearest tenth)
8.1
8.6
8.9
Answer:
8.9%
Step-by-step explanation:
Probability of picking a red marble first: [tex]\frac{2}{10}=\frac{1}{5}[/tex]
Probability of picking a blue marble (no replacement): [tex]\frac{4}{9}[/tex]
[tex]\frac{4}{9} *\frac{1}{5} =\frac{4}{45} = 8.8888888888...%[/tex] % ≈ 8.9%
With the help of a rope rly labeled diagram find the exact value of sin 120
Need help with this problems asap.
Answer:
Step-by-step explanation:
[tex]V=whl=3*4*2=24units^3[/tex](grey)
[tex]V=whl=6*8*4=192units^3[/tex](green)
They are similar, the green is just double in size so a ratio of 1:2
Simplify negative 15.5 divided by 5. and pls tell me how to simplify and give a step by step explanation thanks!
Answer:
The answer is -3.1, or 3 1/10.Since diving a negative and a positive equals a negative, your quotient will be negative. You can start by removing the 0.5, and divide 15 by 5 which is 3. Then with the 0.5 from -15.5, divide it by 5 and you get 0.1. 3 plus 0.1 is 3.1, and since it has to be negative, it's -3.1.
Step-by-step explanation:
i tried, have a nice day (:
An architect builds a 1/50 scale model of a proposed buildings for a client. The volume of the model is what fraction of the volume of the proposed building?
Answer: 1/125,000
Step-by-step explanation:
If the lenght of the building is L, the height is H, and the width is W, the volume of the building is V = L*H*W
Then for the model we will have that each measure is 1/50 times the original, this is:
lenght = L/50
height = H/50
widht= W/50
The volume of the scale model is:
V' = (L/50)*(H/50)*(W/50) = L*H*W/50^3
So we have the volume of the actual building divided 50^3
This means that the volume of the scale is 1/50^3 = 1/125,000 times the volume of the actual building.
A total of 2 yards of fabric is used to make 5 identical pillows. How much fabric is used for each pillow? in a sentence
Answer:
.4 yards of fabric were used for each pillow.
Steps:
2/5=0.4 (or [tex]\frac{2}{5}[/tex])
The diagram shows the layout of Lena's kitchen. She is
planning to cover the floor with tile.
9 ft
One package of tile will cover 3 square foot. How many
packages of tile will she need?
8
13
2 ft
15
5 ft
39
7 ft
Answer:
13 packages
Step-by-step explanation:
We need to first find the area of the composite figure. We can draw a horizontal line through the figure so that it is broken up into two rectangles.
The top rectangle has dimensions of 9 ft by 2 ft, while the bottom rectangle has dimensions of 3 ft by 7 ft. The area of a rectangle is denoted by: A = lw, where l is the length and w is the width.
Here, the top rectangle has width 9 and length 2, so the area is A = 9 * 2 = 18 square feet. The bottom rectangle has width 7 and length 3, so the area is A = 7 * 3 = 21 square feet. Add these up:
18 + 21 = 39 square feet
We know that each package of tile will cover 3 square feet, so divide 39 by 3 to get the number of packages needed:
39 / 3 = 13
The answer is 13 packages.
Answer:
13
Step-by-step explanation:
Larger rectangle - smaller rectangle
(9×5) - [(5-2)×(9-7)]
45 - (3×2)
45 - 6
39 ft²
1 package : 3 ft²
X packages : 39 ft²
X/1 = 39/3
X = 13 packages
i need help with number 2!! please help!
Answer:
12.68
Step-by-step explanation:
76 degrees /2 = 38
Half the width of 15m forms the lower side of the triangle: 7.5 m
sin(38) = 7.5/h
=12.1820
12.18+.5
12.68
Find the exact value of cos (7pi/12)
Answer:
[tex] \cos \bigg( \frac{7\pi}{12} \bigg)= \frac{1 - \sqrt{3} }{2 \sqrt{2} } [/tex]
Step-by-step explanation:
[tex] \cos \bigg( \frac{7\pi}{12} \bigg) \\ \\ = \cos \bigg( \frac{7 \times 180 \degree}{12} \bigg)\\ \\ = \cos \bigg( {7 \times 15 \degree} \bigg)\\ \\ = \cos \bigg( {105 \degree} \bigg)\\ \\ = \cos \bigg( {60\degree + 45 \degree} \bigg) \\ \\ = \cos {60\degree .\cos 45 \degree} - \sin {60\degree .\sin 45 \degree} \\ \\ = \frac{1}{2} . \frac{1}{ \sqrt{2} } - \frac{ \sqrt{3} }{2} .\frac{1}{ \sqrt{2} } \\ \\ = \frac{1}{2 \sqrt{2} } - \frac{ \sqrt{3} }{2 \sqrt{2} } \\ \\ \huge \purple{ \boxed{ \cos \Bigg( \frac{7\pi}{12} \Bigg)= \frac{1 - \sqrt{3} }{2 \sqrt{2} } }}[/tex]
The exact value of cos (7 pi/12) would be,
⇒ cos (7 pi/12) = - 0.2588
We have to given that,
An equation is,
⇒ cos (7 pi/12)
Now, WE can change it into degree as,
⇒ cos (7 pi/12)
⇒ cos (7 × 180 / 12)
⇒ cos (7 × 15)
⇒ cos 105°
⇒ cos (90 + 15)°
⇒ - sin 15°
⇒ - (√3 - 1) / 2√2
⇒ - 0.2588
Thus, The exact value of cos (7 pi/12) would be,
⇒ cos (7 pi/12) = - 0.2588
Learn more about trigonometric ratios at:
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If two points are given, then exactly one line can be drawn through those two points.
Answer:
a postulate
Step-by-step explanation:
a postulate which states that through any two points, there is exactly one line
Yes indeed. That is so. Your statement is a fact. It virtually pulsates with veracity and truthiness. You can take it to the bank and hang your hat on it. Truer words are seldom written or spoken.
Do you have a question to ask ?
Purple paint is a mix of blue paint and red paint in the ratio of 7:4
How much blue and red paint is needed to make 1650 mL of purple paint?
Pls
The Kennedy Middle School cafeteria charges students $3 for 1/6 of a pizza. What is the cost per pizza?
Answer:
1 pizza is 18 dollars
Step-by-step explanation:
The cost of a pizza will be;
⇒ $18
What is an expression?
Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
The Kennedy Middle School cafeteria charges students $3 for 1/6 of a pizza.
Now,
Since, The Kennedy Middle School cafeteria charges students $3 for 1/6 of a pizza.
Hence, The cost of a pizza = $3 × 6
= $18
Thus, The cost of a pizza will be;
⇒ $18
Learn more about the mathematical expression visit:
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hallar M x M / x + y =4
Answer:
M x M / x + y =4
Step-by-step explanation:
Rodrigo surveyed some students at his school about their favorite professional sports,
tennis 13
football 2
soccer 1
What is the experimental probability that the next student Rodrigo talks to will pick
football?
Why does 4x - 3 = 4x + 5 have no solutions?
Step-by-step explanation:
4x - 3 = 4x + 5
4x - 4x = 5 + 3
0 = 8
x is disappear and 2 both sides are not equal
Answer:
If you subtract 4x from both sides there are different numbers so the equation isn't equal so the equation is impossible
4x-4x=3
4x-4x=5
3≠5
Hope this helps
Step-by-step explanation:
Use the quadratic equation x^2+3x+5=0 to answer the questions. A: What is the discriminant of the quadratic equation? B: Based on the discriminant, which statement about the number and type of solutions to the equation is correct?
A: 11
A: 29
A: −11
A: −29
B: The equation has two complex solutions.
B: The equation has one repeated real solution.
B: The equation has two real solutions.
Answer:
A: -11
B: Two complex solutions
Step-by-step explanation:
The discriminant of this equation is 3^2-20=9-20=-11. Since the discriminant is negative, its square root will be an imaginary number, and there will be two complex solutions. Hope this helps!
Answer:
A:-11
B: has no real solutions
Step-by-step explanation:
For this equation: a=1, b=3, c=5
1x2+3x+5=0
Step 1: Use quadratic formula with a=1, b=3, c=5.
x=
−b±√b2−4ac
2a
x=
−(3)±√(3)2−4(1)(5)
2(1)
x=
−3±√−11
2
Answer:
No real solutions.
PLSSSS HELPPOPPPPPPPPP
Answer:
Lower Quartile: 23
Median: 30
Upper Quartile: 43
Interquartile range: 20
Solve the inequality:
4-x<9
｡☆✼★ ━━━━━━━━━━━━━━ ☾
4 - x < 9
Subtract 4 from both sides
4 - x - 4 < 9 - 4
Now we have:
- x < 5
Divide both sides by -1
x < -5
When you divide an inequality by -1, the sign flips
Thus, your answer would be:
x > -5
Have A Nice Day ❤
Stay Brainly! ヅ
- Ally ✧
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Do these side lengths make a right triangle? 6, 8, 10
Answer:
Yes
Step-by-step explanation:
[tex]6^{2}[/tex] + [tex]8^{2}[/tex] = [tex]10^{2}[/tex]
36 + 64 = 100
The Pythagorean theorem is true.