Answer:
a
Step-by-step explanation:
Find the value of x and y in the diagram below.
30°
X
y
7
= 7V5, y = 14
B. X= 14, y = 2V3
A. =
C. X=
73
-3.y=14.3
D. x= 14./2,8-73
3
Answer:
Its D
Step-by-step explanation:
Find the probability that when a couple has five children, at least one of them is a boy. (assume that boys and girls are equally likely.)
Answer:
The easiest way to figure this is to find P(no girls in 5 births) = (1/2)^5 = 1/32 -------------- The P(at least one girl in 5 births) = 1 - 1/32 = 31/32
The probability that when they have five children, at least one of them is a boy is 31/32
Probability is the likelihood or chance that an event will occur.
Probability = Expected outcome/Total outcome:
The probability that a couple will have a boy or girl among the five children = 1/2
If they gave birth to 5 children:
The probability that when they have five children, at least one of them is a boy = 1 - (1/2)^n where:
n is the total number of children
The probability that when they have five children, at least one of them is a boy = 1 - (1/2)ⁿ
The probability that when they have five children, at least one of them is a boy = 1 - (1/2)⁵
The probability that when they have five children, at least one of them is a boy = 1- 1/32 = 31/32
Hence the probability that when they have five children, at least one of them is a boy is 31/32
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please help me i really need help please
Answer:
90+42+x = 180
132+x=180
x=180-132
x=48
Answer:
48 DEGREES
Step-by-step explanation:
First you need to find the other two angles : 42 + 90 = 132 ( the 90 comes from the little square like shape on the other angle).
So x = 180 - 132 = 48 ( we use 180 because it is the sum of interior angles of a triangle.
HOPE THIS HELPED
The graph of a function is a line that passes through the coordinates (2, 11) and (8, 14).
Which is an equation in terms of x and y for this function?
y = 12x + 10
y = 23x + 9
y = 32x + 8
y = 2x + 7
Answer:
y=12x+10
Step-by-step explanation:
hope this helps sorry if I'm wrong
Find the length of the hypotenuse in the triangle
Answer:
it's 9.5 ft.............................
26.) In a midnight sale in a mall, Charice bought a
shirt with 40% discount. How much did she pay if the
original price is Php 200?
A. PhP 80.00
C. PhP 140.00
B. PhP 120.00
D. PhP 160.00
I will give Brainliest
Answer:
B. 120.00
Step-by-step explanation:
200-40%=120
Answer:
the answer is very easy i calculated this so if my calculations are correct it will be PHP 160.00
In a class book order, 2/3 of the books are fantasy and 1/4 of the books are biography. If the order contains 60 books, how many books are either fantasy or biography?
Answer:
Fantasy 40 biography 15
Step-by-step explanation:
2/3 =8/12 = 40/60
1/4 = 3/12 = 15/60
Determine if each proportion is true or false
5/6= 15/18
3/5 = 60/100
20/14 =10/7
4/13= 10/32
Answer:
True
True
True
False
Step-by-step explanation:
15/18 simplified is 5/6
3/5 multiply both numerator and denominator by 20 to get 60/100
20/14 simplified is 10/7
4/13 multiply both by 2.5 to get 10/32.5 and 32.5 does not equal 32
Answer:
Step-by-step explanation:
[tex]\frac{5}{6}=\frac{15}{18}[/tex]
Cross multiply
5 *18 = 15 *6
90 = 90
True. They are in proportion
[tex]\frac{3}{5}=\frac{60}{100}[/tex]
Cross multiply
3*100 = 60 *5
300 = 300
True. They are in proportion
[tex]\frac{20}{14}=\frac{10}{7}[/tex]
Cross multiply
20*7 = 10*14
140 = 140
True. They are in proportion
[tex]\frac{4}{13}=\frac{10}{32}[/tex]
Cross multiply
4*32 = 10*13
128 ≠ 130
False. They are NOT in proportion
Line I is parallel to line m. If the
measure of 26 is 75°, what is the
measure of Z2?
1/2
4/3
5/6 = 75°
78
Answer:
75°
Step-by-step explanation:
All parallel lines will meet their transversal (the line going through them) at the same angle. We can imagine sliding line m up to line l until the two are overlapping, and naturally all of those angles at the intersection will overlap, too. ∠6 will overlap ∠2, so the two angles are congruent. If m∠6 = 75°, then m∠2 = 75°!
Help please it isn’t D I already tried that and I can’t find anything else on this!
Answer:
its B. because if c plus w equal z then the answer equal B.
Help in these two! See these questions below.
Answer:
16. y = 7x
17. y = x + 6
Solve for m. Write your answer as an inequality expression using the correct symbol.
m + 7 ≥ 20
PLZ help
Answer: m ≥ 13
m + 7 ≥ 20
Step-by-step explanation:
you basically subract 7 from 20 and 7
7-7 will cancel each other out 20-7 will give you = 13
m ≥ 13 is your answer
Spraying plants with cornmeal juice is a natural way to prevent fungal growth on the plants. It is made by soaking cornmeal in water, using two cups of cornmeal for every eight gallons of water. Complete the ratio table by dropping and dragging the numbers in the correct locations. You will not use every option given.
DRAG & DROP THE ANSWER
12
18
32
40
36
42
16
Answer:
2-18
4-16
8-24
9-36
10-40
Step-by-step explanation:
they are all multiples of 4, because every cup of cornmeal is 4 gallons of water
Answer:
2:8
4: __
8:32
9:36
10:40
Step-by-step explanation:
I got the same question too but for 4:__ I got it wrong all I know is that it wouldn't be 12! Sorry that I couldn't finish all of it!!
Ms. Phillips ordered 56 pizzas for a school fundraiser. Of the pizzas ordered of them were pepperoni, 19 were cheese, and the rest were veggie pizzas. What traction of the pizzas was veggie?
Answer:
i dont know
Step-by-step explanation:
Is the relation shown in the arrow diagram a function? Explain.
please help it’s for a test
Answer:
No, it is not a function because they should be going to their designed areas Hope this helped/.
Step-by-step explanation:
Please help! Add. Simplify the answer and write it as a mixed number. 3 4/5 + 1 4/15
Answer:
5 1/15
Step-by-step explanation:
3 4/5 + 1 4/15 = ?
convert 3 4/5 to a common denominator of 15:
3 12/15 + 1 4/15 = 4 16/15
simplified = 5 1/15
Ron walks 22.5 in 5 hours finds his speed
Answer:
his speed would be 4.5 miles per hour
Step-by-step explanation:
if you do the distance divided by the hours you will get the answer.
22.5/5=4.5
can someone tell me how to do this I keep getting 3.14 over x
Answer:
60.46%
Step-by-step explanation:
Question: On this dartboard, the circle with 1-m radius is inscribed in an equilateral triangle. Find the probability that a dart that hits the board lands in the circular region. Justify your answer.
Let's start by finding the length of one of the sides of the equilateral triangle. We can do this by creating a 30-60-90 triangle from the radius of the inscribed circle.
I attached an image of what this should look like.
Solving for the length of half of the base of the equilateral triangle gives us 1√3. To get the length of the entire base of the triangle, we will double this value:
s = 2√3The area of an equilateral triangle is [tex]\displaystyle A=\frac{s^2 \sqrt{3} }{4}[/tex].
We can substitute the known value of s (side length) into the formula and solve for A.
[tex]\displaystyle A_t=\frac{(2\sqrt{3})^2\cdot \sqrt{3} }{4}[/tex] [tex]\displaystyle A_t=\frac{4(3) \cdot \sqrt{3} }{4}[/tex] [tex]\displaystyle A_t=3\sqrt{3}[/tex]The area of the equilateral triangle is 3√3.
Now, let's solve for the area of the inscribed circle. The formula for the area of a circle is [tex]\displaystyle A= \pi r^2[/tex].
We know the radius of the circle is 1, so let's substitute 1 for r:
[tex]A_c= \pi (1)^2[/tex] [tex]A_c=\pi[/tex]The area of the inscribed circle is π.
To find the probability of the dart hitting a specific area on the dartboard, we will divide the desired area by the total area of the dartboard.
[tex]\displaystyle P=\frac{\text{Desired area}}{\text{Total area}}[/tex] [tex]\displaystyle P=\frac{\pi}{3\sqrt{3} }[/tex] [tex]\displaystyle P=\frac{\pi \sqrt{3} }{9}[/tex] [tex]P \approx 0.60459978[/tex]The probability that a dart that hits the board lands in the circular region is about 60.46%.
how to do this plz help
Answer:
13. 8
14.3
15.5
17.3
18.4
19.10
In isosceles triangle WXY, XY is 13 inches in length and WY is 10 inches. What is the length of XZ? answer asap please
=============================================================
Explanation:
Notice the double tickmarks on segments WZ and ZY. This tells us the two segments are the same length. Let's say they are m units long, where m is a placeholder for a positive number.
That would mean m+m = 2m represents the length of segment WY, but that's equal to 10 as the diagram shows. We have 2m = 10 lead to m = 5 after dividing both sides by 2.
We've shown that WZ and ZY are 5 units long each. In short, we just cut that length of 10 in half.
-----------------------------------
Let's focus on triangle XYZ. This is a right triangle with legs XZ = unknown and ZY = 5. The hypotenuse is XY = 13.
We'll use the pythagorean theorem to find XZ
a^2 + b^2 = c^2
(XZ)^2 + (ZY)^2 = (XY)^2
(XZ)^2 + (5)^2 = (13)^2
(XZ)^2 + 25 = 169
(XZ)^2 = 169-25
(XZ)^2 = 144
XZ = sqrt(144)
XZ = 12
Segment XZ is 12 inches long.
Write a phrase for each algebraic expression using a word
from the given word bank. Your phrase must include a
word from the word bank.
WORD BANK: more than, less than, quotient, product, cubed
a) m * m * m
b) 4/m
c) 4 + m
d) 4m
e) 4 - m
Answer:
yessir
Step-by-step explanation:
If an item has a sale price of 60$ after it has been discontinued 20%, what was the original price ?
Answer:
The original price would be $75
Step-by-step explanation:
I just used a calculator
which expression equals the sum 1+2+3+4+5+6..
Answer:
7 * 3
7+7+7
3+3+3+3+3+3+3
2+2+2+2+2+2+2+2+2+2+1
(2*10)+1
(10*1)+11....
...and so on
Step-by-step explanation:
I don't know what type of expression you are looking for
The weights of a certain brand of candies are normally distributed with a mean weight of 0.8544 g and a standard deviation of 0.0525 g. A sample of these candies came from a package containing 466 candies, and the package label stated that the net weight is 397.9 g. (If every package has 466 candies, the mean weight of the candies must exceed 397.9466
Required:
If 1 candy is randomly selected, find the probability that it weighs more than 0.8535 g. The probability is:_____
Answer:
The probability is 0.508 = 50.8%.
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
Normally distributed with a mean weight of 0.8544 g and a standard deviation of 0.0525 g.
This means that [tex]\mu = 0.8544, \sigma = 0.0525[/tex]
If 1 candy is randomly selected, find the probability that it weighs more than 0.8535 g.
This is 1 subtracted by the pvalue of Z when X = 0.8535. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{0.8535 - 0.8544}{0.0525}[/tex]
[tex]Z = -0.02[/tex]
[tex]Z = -0.02[/tex] has a pvalue of 0.492
1 - 0.492 = 0.508
The probability is 0.508 = 50.8%.
Tomás is gathering data about the sleeping habits of high school students. So far, he has completed 3 different surveys, each with 70 respondents.
What should Tomás expect as he continues his data-gathering process?
As the number of surveys increases, the mean of the sample means will approach ______, and the means will be ___________.
70 Points
Answer:
The population mean
Normally distributed
Please give me brainliest, I really need it.
a)As the number of surveys increases, the mean of the sample means will approach the population mean.
b)Means will be normally distributed.
What is a normal distribution?A normal distribution is a probability distribution that is symmetric about the mean, and data near the mean are more frequent than data far from the mean.
As the number of surveys increases, we will have more data.
So, the mean of the sample means will approach the population mean.
Means will be normally distributed because each survey has the same number of respondents.
Thus, a)as the number of surveys increases, the mean of the sample means will approach the population mean.
b)Means will be normally distributed.
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3. If one side of the equation 23+43 = 66 is multiplied by 3, what needs to be done to the other side of the equation to keep the sides equal?
Answer: multiply the other side by 3 also
Step-by-step explanation:
What happens to one side must also happen to the other side. This is the only way to keep equations equal when changing constants and variables
WILL GIVE BRAINYEST!!! PLS HELP!!!
Mr. Hudson walked 12 miles in 3 hours. At this rate,
how far will he walk in 5 hours? Write your answer in
a complete sentence AND show your work.
It should be surprising if someone told you the average height of all respondents was actually 1.69 meters. TRUE/FALSE?
True
False
HELP PLEASE PLEASE PLEASE
Help fast help fast help Help fast help fast help Help fast help fast help Help fast help fast help Help fast help fast help Help fast help fast help Help fast help fast help Help fast help fast help Help fast help fast help Help fast help fast help
Answer: its 3x+20 to my calculations
Step-by-step explanation: