Answers
Answer:
x=48
Step-by-step explanation:
They are vertical angles.
Related Questions
2. Carl needs 15 hours longer than Jennifer to paint a room. If they work together, they can complete the job in 4 hours. Explain each step in figuring out how to determine the time it would
take Jennifer to complete this job on her own. Pls help 20 minutes left
Answers
Answer:
Jennifer would complete the job on her own in 5 hours.
Step-by-step explanation:
Solving a quadratic equation:
Given a second order polynomial expressed by the following equation:
[tex]ax^{2} + bx + c, a\neq0[/tex].
This polynomial has roots [tex]x_{1}, x_{2}[/tex] such that [tex]ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})[/tex], given by the following formulas:
[tex]x_{1} = \frac{-b + \sqrt{\Delta}}{2*a}[/tex]
[tex]x_{2} = \frac{-b - \sqrt{\Delta}}{2*a}[/tex]
[tex]\Delta = b^{2} - 4ac[/tex]
Rates
The together rate is the sum of their separates rate.
We have that:
Jennifer takes x hours to complete the job on her own, so her rate is 1/x.
Carl needs 15 hours longer than Jennifer, that is, 15 + x hours, so his rate is 1/(15+x).
The together rate is 1/4. So
[tex]\frac{1}{4} = \frac{1}{x} + \frac{1}{15+x}[/tex]
[tex]\frac{1}{4} = \frac{15 + x + x}{x(15+x)}[/tex]
[tex]\frac{1}{4} = \frac{15 + 2x}{x(15+x)}[/tex]
Applying cross multiplication.
[tex]x^2 + 15x = 4(15 + 2x)[/tex]
[tex]x^2 + 15x = 60 + 8x[/tex]
[tex]x^2 + 7x - 60 = 0[/tex]
Quadratic equation with [tex]a = 1, b = 7, c = -60[/tex]. So
[tex]\Delta = 7^{2} - 4*1*60 = 289[/tex]
[tex]x_{1} = \frac{-7 + \sqrt{289}}{2} = 5[/tex]
[tex]x_{2} = \frac{-7 - \sqrt{289}}{2} = -12[/tex]
Since the time to complete the job has to be a positive value.
Jennifer would complete the job on her own in 5 hours.
Mia removes the plug from a trough to drain the water. The volume, in gallons, in the trough after it has been unplugged can be modeled by the expression 10x2 −19x + 6, where x is time in minutes. Choose the appropriate form of the expression that would reveal the time in minutes when the trough is empty.
Answers
Answer:
(5x − 2)(2x − 3).
Step-by-step explanation:
Are these triangles congruent ?
Answers
Answer:no
Step-by-step explanation:
What is the measure m=?
Answers
Answer:
What is the file?
Step-by-step explanation:
I need help I needa pass this test all 9 questions
Answers
Answer: The answer is b
Step-by-step explanation: Check the image! It matches. Hope this helps!
True or False:
A figure that translated 4 units
right and 2 units up maintains
it's congruence.
Answers
Ricky is testing soil for a contaminant at a building site,
He'll take action to stop construction if there's strong
evidence that the soil has more than 400 parts per
million (ppm) of the contaminant. He plans on using soil
from n = 30 randomly selected locations at the building
site. His hypotheses are H, :p < 400 ppm and
H:u > 400 ppm, where u is the mean amount of the
contaminant in the soil at this site,
Suppose that in reality, H, is actually true,
Which situation below would result in the lowest
probability of a Type Il error?
Answers
The scenario that will bring about a type II error will be when the true mean is 405 ppm and he uses a significance level of 0.15
What is a type II error?It should be noted that a type II error simply describes the error that occurs when the individual fails to reject a null hypothesis.
From the complete question, type II error will be when the true mean is 405 ppm and he uses a significance level of 0.15. In this case, the null hyothesis was not rejected.
Learn more about type II error on:
https://brainly.com/question/16012410
Answer:
Step-by-step explanation:
Mark won 79 lollipops playing hoops at his school game night. Later, he gave three to each of his friends. He only has four remaining. How many friends does he have?
Answers
Answer:
25 friends
Step-by-step explanation:
79 - 4 = 75.
75 ÷ 3 = 25
25 friends
The flu started spreading in a school. The first week after winter break, 5 students came to school sick. After each week the number of
sick students increased by 60%. Assuming the model continued for the first several weeks, what is the growth factor that would
appear in the equation for the function?
A.) 1.40
B.) 1.60
C.) 5.60
D.) 1.06
Answers
Two sets of parallel lines intersect as shown. Given ∠2 = 130° what is ∠9?
Answers
Answer:
50 degrees. The angle is the opposite of angle 9, making it 180-130=50.
Are the following linear, quadratic, or exponential?
Answers
1. exponential
2. quadratic
3. linear
4. exponential
Answer:
exponential
Quadratic
linear
exponential
Jason can buy a bag of dog food for $25 at two different stores. One store offers 6% cash back on the purchase plus $5 off his next purchase. The other store offers 20% cash back.
(a)
Calculate the total savings from the first store, including the savings on the next purchase.
$
(b)
Calculate the total savings from the second store
Answers
Answer:
Total saving from First Store = $ 1.5 + $ 5 = $ 6.5
Total saving from Second Store = $ 5
Step-by-step explanation:
Given - Jason can buy a bag of dog food for $25 at two different stores. One store offers 6% cash back on the purchase plus $5 off his next purchase. The other store offers 20% cash back.
To find - (a) Calculate the total savings from the first store, including the savings on the next purchase.
(b) Calculate the total savings from the second store.
Proof -
Given that,
Total cashback Jason get from First Store = 25×6% = 25×0.06 = $ 1.5
So,
Total saving from First Store = $ 1.5 + $ 5 = $ 6.5
Now,
Total cashback Jason get from Second Store = 25×20% = 25×0.20 = $ 5
So,
Total saving from Second Store = $ 5
The vertices of ABC are A(-2,4), B (-2,2), and C (-5,2). If ABC is reflected across the line y=1 to produce the image A”B”C find the coordinates of the vertex B’
Answers
The vertices of ∆ABC are A (-2,5), B(-2,4), and C(-5, 3). If ∆ABC is reflected across the line y=-2 to produce the image ∆A’B’C, find the coordinates of the vertex A’ if ∆ABC is reflected across the line x= -2.
a cone has a height of 35 and a radius of 19
Answers
Answer:
Step-by-step explanation:
The radius should be 17.5 if the height is 35. And also what is the question?
Answer:
Base area = 1,134.115
Lateral surface = 2,377.142
Slant height = 39.825
Surface area = 3,511.257
Volume = 13,231.341
Step-by-step explanation:
5th grade math. correct answer will be marked brainliest
Answers
Answer:
2 over 15 I think. I might be wrong. I rarely deal with fractions anymore.
if ax-cd=a wat is x .......
Answers
Answer:
Option A:[tex] \frac{a + cd}{a} [/tex]
Step-by-step explanation:
ax - cd = a
=> ax = a + cd
[tex] = > x = \frac{a + cd}{a} [/tex]
Hence,
Option A is the answer.
Answer:
A. [tex]\frac{a+cd}{a}[/tex]
Step-by-step explanation:
ax-cd=a
Add cd to both sides:
ax=a+cd
Divide both sides by a:
x=[tex]\frac{a+cd}{a}[/tex]
Hello who ever answers gets brainliest!!!
Answers
Answer:
Yes
Step-by-step explanation:
All you need to do is just divide 5,184 by 10.
5,184/10= 518.4
Therefore, the answer is yes.
someone please help me answer this!!
Answers
Answer:
4 1/10
Step-by-step explanation:
4.1
= 4 + 1/10
= 4 1/10
Hope you understand!
Four equal sized boxes contain a
maximum of 80 books. How many
books will fit in 10 boxes?
Answers
If one box contains 20 books, then 10 boxes should fit 10 • 20 = 200 books.
exponential 2^2/2^-3
Answers
Answer:
32
Step-by-step explanation:
2 ^(2- -3)
= 2^5
Answer:
32
Step-by-step explanation:
[tex] \dfrac{2^2}{2^{-3}} = 2^{2 - (-3)} = 2^{2 + 3} = 2^5 = 32 [/tex]
At the gym, Diana always spends more minutes running than lifting weights.
PART A: Which equations describe the relationship between th number of minutes Diana runs, r, and the number of minutes she lifts weights, w. Select all that apply.
1. 12 + w = r
2. r = w - 12
3. w = 12 + r
4. r - 12 = w
5. r + w = 12
Answers
Answer:
2,3,5
Step-by-step explanation:
The equation that shows the relationship between r and w is r = w + 12 and 12 + w = r
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
Let r represent the number of minutes Diana runs and w represent the number of minutes she lifts weight.
Since Diana always spends more minutes running than lifting weights. Hence:
r = w + 12
The equation that shows the relationship between r and w is r = w + 12 and 12 + w = r
Find out more on equation at: https://brainly.com/question/2972832
State the name of the property illustrated. 5 + [7+(4)] = (5+7) + (4)
A. Communtative property of addition
B. Identity property of addiction
C. Associative property of addition
Answers
A salesperson earns a commission of $252 for selling $2100 in merchandise.
Find the commission rate. Write your answer as a percentage.
Answers
Answer:
The commission rate is of 12%.
Step-by-step explanation:
Commission rate:
The commission rate is given by the commission value multiplied by 100% and divided by the value of merchandise sold.
In this question:
$252 in commission for selling $2100 in merchandise. So
252*100%/2100 = 12%
The commission rate is of 12%.
Choose 3 values that would make this inequality true. 28 + x > 42 *
Answers
Answer:
15, 16, 17
Step-by-step explanation:
28+ x > 42
⇒ x > 42-28
⇒ x > 14
With that said, the three values would be 15, 16, 17
10 x __= 5/6 + 5/6 Solve.
Answers
Answer:
[tex]let \: that \: number \: be \: m \\ 10 \times m = \frac{5}{6} + \frac{5}{6} \\ 10m = \frac{10}{6} \\ m = \frac{10}{60} \\ m = \frac{1}{6} [/tex]
Plz help! Urgent!
Use the information in the table and choose all true statements.
Answers
Answer:
Pretty sure it's the first 3 options.
Step-by-step explanation:
Hi first of all, im totally new at this, but this seemed like a simple q. If anyone sees this and finds it wrong, pls pls let me know!
China and USA have highest/lowest density. You can tell by looking at the chart.
Indias density is about 360 people/km^2
Divide India's population by the Area
= 360.22
And the last option, according to me, is wrong.
Hope it helps !! And if it doesnt, again, pls let me know :)
According to Masterfoods, the company that manufactures M&M's, 12% of peanut M&M's are brown, 15% are
yellow, 12% are red, 23% are blue, 23% are orange and 15% are green. [Round your answers to three decimal
places, for example: 0.123]
Compute the probability that a randomly selected peanut M&M is not brown.
Compute the probability that a randomly selected peanut M&M is brown or orange.
Compute the probability that three randomly selected peanut M&M's are all yellow.
If you randomly select six peanut M&M's, compute that probability that none of them are brown.
If you randomly select six peanut M&M's, compute that probability that at least one of them is brown.
Answers
Answer(In bold)/Step-by-step explanation:
Compute the probability that a randomly selected peanut M&M is not blue
P (blue) = 23%
P (blue)C = 1 - P(blue) = 100% - 23% = 77%
Compute the probability that a randomly selected peanut M&M is green or red.
P (green) = 15%
P (red) = 12%
P (green or red) = P(green) + P(red) = 27%
Compute the probability that three randomly selected peanut M&M’s are all yellow.
P (yellow) = 15%
(P(yellow))3 = 0.338%
There was replacement in the selection process.
If you randomly select six peanut M&M’s, compute that probability that none of them are brown.
P(brown) = 12%
P(brown)C = 1 - P(brown) = 100% - 12% = 88%
(P(brown)C)6 = 46.440%
Please help me with this and fast!
Answers
Answer:
16
5
O
I think
Step-by-step explanation:
Many businesses and organizations insist that official communications use professional-looking fonts, such as Times New Roman. Fonts characterized as less professional, such as Comic Sans, should be avoided. A student would like to determine if font choice makes a difference in the average grade on a typed response in English classes. There are currently four English classes available from which the student can collect data, and each class has a similar writing assignment. That the start of the assignment, students are randomly assigned a font, either times new Roman or comic sans, and then complete the assignment the teachers grade the assignment and the mean grade for each font is found.
What is the response variable in this experiment?
A the font used by each h student
B, the teachers grading the responses
C the grade received on each assignment
D the length of the student response on the assignment
Answers
Answer:
C.
Step-by-step explanation:
The response variable can be defined as those variables that are considered to be the focus of a question in research or experiment. It is also known as a dependent variable and is marked on the y-axis. The response variable is explained with the help of an explanatory variable, marked on the x-axis. The other names for response variables are y-variables or outcome variables.
In the given case, the response variable is the grade received on each assignment. The grades received by students on each assignment are the main focus of this research.
Therefore, option C is correct.
What’s the circumference?
Use 3.14 for pi
Extra large pizza: 20in diameter
Large pizza: 16in diameter
Medium pizza: 12in diameter
Small pizza: 10in diameter
If you help me with all of them I’ll give BRAINLIEST!!!
Answers
Answer:
all the stuff written there are answers if I'm wrong tell me I'll try it out again have a good day.
