Answers
Answer:
x = 7.5
Step-by-step explanation:
Since the midsegment and the third segment of the triangle are parallel to each other, therefore,
[tex] \frac{8 + 10}{8} = \frac{6 + x}{6} [/tex]
[tex] \frac{18}{8} = \frac{6 + x}{6} [/tex]
[tex] \frac{9}{4} = \frac{6 + x}{6} [/tex]
Cross multiply
[tex] 9*6 = 4(6 + x) [/tex]
[tex] 54 = 24 + 4x [/tex]
Subtract 24 from each side
54 - 24 = 4x
30 = 4x
Divide both sides by 4
30/4 = x
7.5 = x
x = 7.5
Related Questions
Find the missing value.
K
N
75°
L
M
Answers
Answer:
N
Step-by-step explanation:
Yeah cos it's like n ya know ueuehd
Alexia drank 2/3 L of water Monday before going jogging she drank 3/8 L of water after her dog how much did Alexis a drink all together right answer as a mixed number
Answers
Answer:
5/11
Step-by-step explanation:
&add up the decimals I think
solve for x. 8×-3=5(2×+1)
Answers
Answer:
x = -4
Step-by-step explanation:
8x - 3 = 5(2x + 1)
8x - 3 = 10x + 5
8x - 10x = 5 + 3
-2x = 8
x = 8/-2
x = -4
Determine a set of 3 numbers that are divisible by
6 and 5
Answers
Answer:
30
60
90
120
180
210
240
hope it helped have a good day mate
Which of the following is the equation for the line of symmetry in this figure?
Can someone help please!
Answers
Answer:
X=3
Step-by-step explanation:
3 is in the middle of the figure.
I hope this helps!
I have attached the question :)
Answers
Answer:
The first one
Step-by-step explanation:
the X values are all diffrent
I NEED help Zane is determining whether the given value of the variable is a solution of the equation.
13 + h = 21 for h = 9
What steps should Zane take? Check all that apply.
Substitute 9 for the variable h.
Substitute 21 for the variable h.
Simplify by adding 13 and 21.
Simplify by adding 13 and 9.
21 = 21, so 9 is a solution to the equation.
Answers
Answer:
a, d, f
Step-by-step explanation:
Answer:
A d and f
Step-by-step explanation:
I just did it
Find the equation of the line thank you
Answers
Answer:
y=3/4x-2
Step-by-step explanation:
Answer:
y=3/4x-2
Step-by-step explanation:
y-intercept: -2
slope: 3/4
An experiment on the teaching of reading compares two methods, A and B. The response variable is the Degree of Reading Power (DRP) score. The experimenter uses Method A in a class of 100 students and Method B in a comparable class of 100 students. Students are assigned to the two classes at random. Suppose that in the population of all children of this age the DRP score has the N(75, 30) distribution if Method A is used and the N(74, 40) distribution if Method B is used. Let us call the mean DRP score for 100 students in the A group. Let us call the mean DRP score for 100 students in the B group ý.
Required:
What is the probability that the mean score for the B group will be at least five points higher than the mean score for the A group?
Answers
Answer:
0% probability that the mean score for the B group will be at least five points higher than the mean score for the A group
Step-by-step explanation:
To solve this question, we need to understand the normal probability distribution, the central limit theorem, and subtraction of normal variables:
Normal probability distribution
When the distribution is normal, we use the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
Subtraction of normal variables:
When we subtract two normal variables, the mean is the subtraction of the mean of each variable, while the standard deviation is the square root of the sum of each variance.
Method A:
One student: N(75,30), so [tex]\mu = 75, \sigma = 30[/tex]
Samples of 100 students: [tex]n = 100, s = \frac{30}{\sqrt{100}} = 0.3[/tex]
Method B:
One student: N(74,40), so [tex]\mu = 74, \sigma = 40[/tex]
Samples of 100 students: [tex]n = 100, s = \frac{40}{\sqrt{100}} = 0.4[/tex]
What is the probability that the mean score for the B group will be at least five points higher than the mean score for the A group?
This is the probability that B - A >= 5. So
[tex]\mu_{B-A} = \mu_B - \mu_A = 74 - 75 = -1[/tex]
[tex]s_{B-A} = \sqrt{s_A^{2}+S_B^{2}} = \sqrt{(0.3)^2+(0.4)^2} = 0.5[/tex]
We have to find 1 subtracted by the pvalue of Z when X = 5. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
By the Central Limit Theorem
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]Z = \frac{5 - (-1)}{0.5}[/tex]
[tex]Z = 12[/tex]
[tex]Z = 12[/tex] has a pvalue of 1
1 - 1 = 0, so
0% probability that the mean score for the B group will be at least five points higher than the mean score for the A group
Nature's Squeeze is a drink stand known for its fresh-squeezed juices. Colin just got his first job working there! During his training, he made 4 drinks in 12 minutes. Today is Colin's first shift, and he will work for 90 minutes.
If Colin makes drinks at the same rate, how many drinks will he make today?
Answers
Answer: 30 drinks
Step-by-step explanation:
From the question, we are informed that Colin made 4 drinks in 12 minutes during his training. This shows that a drink is made in (12/4) = 3 minutes.
Since he will work for 90 minutes, the number of drinks that he will make will be:
= 90/3
= 30 drinks
CAN SOMEONE PLEASE HELP ME WITH QUESTIONS 2 AND 3 !!!!!!
Answers
X=3
-2(3)= -6
3. 48
X=16
3(16)= 48
Need help asap! Solve question b.
Answers
Answer:
D.
Step-by-step explanation:
This is the only one that sounds correct
Answer:
i cant read it oh i zoomed in B
Step-by-step explanation:
-1+5.8x=1-(9.1x+10)+8.5x solve for x
Answers
Answer:
ehjrbbvhbvebvuhbdhvhdhsduhsdbrhw
Step-by-step explanation:
My new speaker costs $154.00, but I also had to
pay 61 tax. How much did I pay in total for my speakers
Answers
Answer:
$247.94
Step-by-step explanation:
eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
SOMEONE PLSS HELP NEED ASAP
Answers
Answer:
c
Step-by-step explanation:
if the sides are in proportion set the proportions
6.21/ 5.4 = x/2.6; cross multiply
5.4*x = 6.21 *2.6; divide by 5.4
x= 2.99
find the slope of the line. (1,1) ,( 3,5)
Answers
Answer:
m=2
Step-by-step explanation:
5-1/3-1
4/3-1
4/2
2
I hope this helps
Percents can be expressed as fractions and decimals. A percent means “out of 100,” so we can express 40% as the fraction 40⁄100. We can simplify this fraction to2⁄5 by dividing by the greatest common factor, 20.
We can also express a percent as a decimal. Percents show a part out of a hundred, or hundredths, so you can divide the percent by 100 to find the decimal. 40 divided by 100 equals 40 hundredths, or .4. You can also divide the numerator by the denominator in the simplified fraction, 2⁄5, to find the equivalent decimal.
These values are all equivalent.
75% =
A
75/10
B
2/3
C
3/4
D
3/5
Answers
Answer:
Definitely 3/4!
Step-by-step explanation:
Option A = 7.5
Option B = 66.6%
Option C = 75% (because 25 times 4 is equal to 100%, so 25 times 3 would be 75)
Option D = 6/10 or 60%
The values that are equivalent to 75% are A) 75/100 (0.75) and C) 3/4.
To determine whether these values are equivalent, let's evaluate each expression and compare the results.
A) 75% can be written as a decimal by dividing 75 by 100:
75% = 75/100 = 0.75
B) 2/3 is already in fractional form and cannot be simplified further.
C) 3/4 is also in fractional form and cannot be simplified further.
D) 3/5 is in fractional form and cannot be simplified further.
Now let's compare the decimal equivalents:
0.75 = 75/100
2/3 = 0.666...
3/4 = 0.75
3/5 = 0.6
Comparing the decimal values, we can see that A) 0.75 and C) 0.75 are equivalent, as they both represent 75% in decimal form.
However, B) 2/3 and D) 3/5 do not equal 0.75 and are therefore not equivalent to 75%.
Hence, the values that are equivalent to 75% are A) 75/100 (0.75) and C) 3/4.
Learn more about Percents click;
https://brainly.com/question/31323953
#SPJ6
rewrite 4.4.6.4.4.6 using exponents
Answers
Answer:
[tex]4^{4}[/tex]×[tex]6^{2}[/tex]
Step-by-step explanation:
There is 2 of the same number 6 and there is 4 of the number 4
I hope this helps
Jogging at a pace of 150 seconds per quarter mile, how long would it take to run 3miles, in minutes?
Answers
Answer:
2400
Step-by-step explanation:
150 times 4 = 600 times 4 = 2400
Answer:
30 minutes
Step-by-step explanation:
150 sec. x 4 = 600 sec.
600 sec. per mile
600 sec. x 3 = 1800 sec.
1800 sec. / 60 sec. = 30 min.
what why did you say you had $80.50 and you add that up
Answers
Answer:
im not sure i understand the question
Step-by-step explanation:
80.50 plus........plus what?
i am confusion
whats the answer to -6 = 3/2z
Answers
Answer:
Step-by-step explanation:
-6=3/2z
-12z=3
z=-4
You buy rice at $0.71 a pound. One batch of fried rice requires 9 pounds of rice. How much does the rice for one batch cost? Round to the nearest cent.
Answers
Answer:
$6.39
Step-by-step explanation:
b= batch
1b=$0.71
9b=?
9b=9($0.71)
9b=$6.39
Answer 6.4
I think
What is the smallest whole number to the right of 3.52?
Answers
Solve w=3/7(ay+m) for y
Answers
Answer:gd
Step-by-step explanation:
Vygfy
Answer:
y = (7w - 3m) / 3a
Step-by-step explanation:
w = 3/7ay + 3/7m
multiply each side by 7 to eliminate fractions
7w = 3ay + 3m
3ay = 7w - 3m
y = (7w - 3m) / 3a
Solve:
(Vx + 2)(Vx - 2) = 0
X=
Answers
Answer:
x = 4
Step-by-step explanation:
Given:
(√x + 2)(√x - 2) = 0
Required:
Find x
SOLUTION:
√x(√x - 2) + 2(√x - 2) = 0 (distributive property)
x - 2√x + 2√x - 4 = 0
x - 4 = 0
x - 4 + 4 = 0 + 4
x = 4
help me please. Can somebody please help me.
Answers
Answer:
oh my :o
Ok so just mutiply
Step-by-step explanation:
a cube has a lateral surface area of 64sq m find the total surface area of the cube
Answers
Answer:
384 square meters.
Step-by-step explanation:
Given that a cube has a lateral surface area of 64 square meters, to find the total surface area of the cube, the following calculation must be performed, knowing that the formula to calculate the area of a cube is to multiply by 6 (the number of sides of the cube) the area of one of its sides:
A x 6 = X
64 x 6 = X
384 = X
Thus, the area of the cube is 384 square meters.
Need help finding angle A,B,C,D!!
Answers
Keep in mind that a line=180 degrees. I hope this helps.
The Commutative Property states that the order of terms in an expression does not affect the outcome. Which of the following operations does the Commutative Property apply? select all that apply
A. addition
B. subtraction
C. multiplication
D. division
Answers
Select all the expressions that are solutions to 5=2/3x. A. 5 2/3 B. 5 2/3 D. 15/2 E. 10/3
Answers
Answer:
C. 5 divided by 2/3
D. 15/2
E. 3/2 X 5
hope this helps
Step-by-step explanation:
