Explain? Okee!
2/3x-5 = 13
First add 5 on both sides.
2/3x = 18
Now multiply 2/3 on both sides.
x = 12
Woops! It seems you made a mistake. X is not 27, but it is 12.
x = 12
The points in the table lie on a line. Find the slope of the line.
х
-3
2
7
12
y
0
2
6
4
The slope is
Answer:
4/5
Step-by-step explanation:
6 - 2 = 4
7 - 2 = 5
The compressive strength of samples of cement can be modeled by a normal distribution with a mean of 6000 kilograms per square centimeter and a standard deviation of 100 kilograms per square centimeter. (a) What is the probability that a samples strength is less than 6250 kilograms per square centimeter? (b) What is the probability that a samples strength is between 5800 and 5900 kilograms per square centimeter? (c) What strength is exceeded by 95% of the samples?
Answer
a
[tex]\Phi (2.5) = 0.9938[/tex]
b
[tex]P(5800 < X < 5900 ) = 0.13591 [/tex]
c
[tex]x = 5835.5 [/tex]
Question
From the question we are told that
The mean is [tex]\mu = 6000 \ kg/cm^2 [/tex]
The standard deviation is [tex]\sigma = 100 \ kg/ cm^2 [/tex]
Generally the probability that a samples strength is less than 6250 kilograms per square centimeter is mathematically represented as
[tex]P(X < 6250 ) = P(\frac{ X - \mu}{\sigma } < \frac{6250 - 6000 }{100} )[/tex]
Generally [tex]\frac{X - \mu }{\sigma } = Z(The \ standardized \ value \ of \ X )[/tex]
[tex]P(X < 6250 ) = P(Z< 2.5 )[/tex]
From the z-table
[tex]\Phi (2.5) = 0.9938[/tex]
Generally the probability that a samples strength is between 5800 and 5900 kilograms per square centimeter is mathematically represented as
[tex]P(5800 < X < 5900 ) = P(\frac{5800 - 6000}{100} < \frac{X -\mu}{\sigma} < \frac{5900 - 6000}{100} )[/tex]
=> [tex]P(5800 < X < 5900 ) = P(-2< Z< -1 )[/tex]
=> [tex]P(5800 < X < 5900 ) = P(Z < -1) - P( Z< -2 )[/tex]
From the z-table
[tex]P(Z < -2) = 0.02275[/tex]
and
[tex]P(Z < -1) = 0.15866[/tex]
So
[tex]P(5800 < X < 5900 ) = 0.15866 - 0.02275[/tex]
=> [tex]P(5800 < X < 5900 ) = 0.13591 [/tex]
Generally the strength that is exceeded by 95% is mathematically evaluated as
[tex]P(X > x) = 1- P(\frac{X - \mu }{\sigma} \le \frac{x- 6000}{100}) = 0.95 [/tex]
=> [tex]P(X > x) = P(Z \e \frac{x- 6000}{100}) = 0.05 [/tex]
From the normal distribution table the critical value of 0.05 is
[tex]z = - 1.645[/tex]
So
[tex]\frac{x- 6000}{100} = - 1.645[/tex]
=> [tex]x = (-1.645 * 100) + 6000[/tex]
=> [tex]x = 5835.5 [/tex]
What is the supplement of an angle that
measures 21 degrees?
Answer:
159°
Step-by-step explanation:
Supplements equal a total of 180°. The expression for these types of problems would be
180-x
In this case, x would be 21. Plug it in to our expression.
180-21
159
hi, this is my first question and I would like to award both answers and POSSIBLY the first 5 comments. to win please list 3 things you love about yourself 1 inspirational quote,1 person you look up to and one good deed everyone who sees this post should do. thank you!
Answer: 3 things that I love about myself is my passion in dancing, my hair and my eyes :). A quote that inspired me was "It’s all right to not have a dream, if you have moments where you feel happiness for a while.", I look up to my grandmother and bts. A good deed that everyone should do is give someone you appreciate; a hug and tell them how much you liove them :).
7th grade math , I’ll give brainliest
Answer:
3. 11
4. -8
Step-by-step explanation:
A box of cereal states that there are 81 calories in a 7-cup serving. What is the unit rate for calories
per cup? How many calories are there in 2 cups of the cereal?
The unit rate is calorie(s) per cup.
(Simplify your answer. Type an integer, proper fraction, or mixed number.)
Enter your answer in the answer box and then click Check Answer
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AC 40)
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9/25/2020
Answer:
23.142857143 calories or 23 1/7 calories
The unit rate is calories per cup
Step-by-step explanation:
7- cup serving = 81 calories
2 cups = x calories
Cross Multiply
2 cups × 81 calories = 7 cups × x
x = 2 cups × 81 calories/7 cups
x = 23.142857143 calories or 23 1/7 calories
how do you do trigonometry?
Compare the ratios using the models.
2 models. One model has 5 sections and is labeled 4 to 5. The second model has 10 sections and is labeled 9 to 10.
The left model should have
segments shaded.
The right model should have
segments shaded.
So, 4:5
9:10.
Answer:
the left model should have 4 segments shaded the right model should have 9 segments shaded
Step-by-step explanation:
i did the quiz
Answer:
A. 4
B. 9
C. <
Step-by-step explanation:
4. T-Bone's Math teacher requires 6 book
reports the 1st semester. T-Bone has 4
more reports to complete. How many
book reports has T-Bone already
finished?
x - 4 = 6
x + 4 = 6
Answer:
2
Step-by-step explanation:
6-4=2
PLS HELP ASAP< IMAGE INCLUDED
Answer:
it should be D but it might be C it's been awhile since I've done that but those two seem the most familiar
Please answer correctly !!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!
Answer:
Its distributive property for the first question
Step-by-step explanation:
What are the x- intercepts of the graph of the function below ? Y=x^2-4x-32
Answer:
-4 and 8
Step-by-step explanation:
brainlist pls :>
HELP IT'S DUE IN 3 MINUTES!!!!!
1/4 hx= W
Answer:
Hx=4w
Step-by-step explanation:
the grade 8 has hired a disk jockey the disk jockey takes 85$ plus 2 for each student that attends. The disk jockey was paid 197 how many students attended
Answer:
56 students
Step-by-step explanation:
The equation for your question is 85+2x=197. First you would have to subtract 85, on both sides, leaving you with 2x=112. Then, you'd have to divide by 2 on both sides to isolate the variable. From there, you're left with x=56.
A local pizza shop has a membership program for frequent buyers. The membership costs $5 per month and members get a discounted price of $2 per slice of pizza. Chase purchased a membership to this pizza shop. How much would Chase have to pay the pizza shop if he bought 19 slices of pizza this month?
Answer:
$38.
Step-by-step explanation:
2•19=$38
unless you need to add the $5 as well then it's $43
Answer:
$38 for the pizza. if you're counting the membership with it, its $43.
Step-by-step explanation:
$2 slices of pizza times 19 times bought. 2 · 19 is 38. with the membership added on, it would be $43.
if you need more explanation, ask in the comments! i would be happy to help :)
She borrows $25.63 from her sister to help pay for the dress. Then Jenny earns $16.33 helping her dad organize his home office. If she gives all the earnings to her sister, Jenny will still owe her sister $?
The answer to this question is: Jenny will still owe her sister $9.30.
25.63 - 16.33 = 9.30
Solve for g.
2(g - 13) = 12
g
Answer:
-2
Step-by-step explanation:
M∠LONm, angle, L, O, N is a straight angle. \qquad m \angle LOM = 9x - 91^\circm∠LOM=9x−91 ∘ m, angle, L, O, M, equals, 9, x, minus, 91, degrees \qquad m \angle MON = 6x + 76^\circm∠MON=6x+76 ∘ m, angle, M, O, N, equals, 6, x, plus, 76, degrees Find m\angle MONm∠MONm, angle, M, O, N:
Answer:6
Step-by-step explanation:
Answer: 154
Step-by-step explanation:
The leg of a right triangle is 5 units and the hypotenuse is 8 units. What is the length, in units, of the other leg of the triangle?
89 Units
Answer:
The other leg is equal to 6.24 units.
Step-by-step explanation:
Using the Pythagorean Theorem:
[tex]a^2 + b^2 = c^2[/tex]
However we need to find b:
[tex]c^2-a^2=b^2[/tex]
Substitute:
[tex]8^2-5^2=b^2[/tex]
[tex]64-25=b^2[/tex]
[tex]b^2=39[/tex]
Find the square root:
[tex]\sqrt{39}=6.24[/tex]
The other leg is equal to 6.24 units.
find the value of x in the triangle shown below
98 times 871 plus pi
Answer:
85361.1415927
Step-by-step explanation:
Answer:
85361.141
Step-by-step explanation:
did it on a calculator
A function has a derivative f 1(x)=3-2x. An equation of a line tangent to the graph of the function at x =2 is y-7=-(x-2). What is an equation of the function f?
Identify the domain of the function shown in the graph.
10.
A. 0
B. x < 0
C. x > 0
D. xis all numbers.
what’s the answer? i’m doing that quiz rn i’m on this question.
The domain of the function shown in the graph is x>0.
What is a function?A function is the relation between two sets. It relates from the domain set to the range set.
Here, the given graph represents an exponential function starting from (0, 0).
The given graph approaches towards the right along with the x-axis.
Therefore, the initial value of the independent variable in the given function is 0.
Hence, the domain of the given function is x>0.
Learn more about a function here: https://brainly.com/question/4442228
#SPJ2
5. Sally is selling seashells by seashore. She earns $0.50 for every seashell she sells, and has
already sold 8 seashells. She can only sell a maximum of 89 seashells. The function of her
profits can be modeled by f(x)=$0.50. What is the domain and range of the function?
Answer:
Do you know the answer I have the same question..?
Step-by-step explanation:
A fast food restaurant serves an average of 40 customers per hour. On average, how many minutes does each customer wait for his or her order? (Hint: finds minutes per customer, not customer per minute)
Answer:
I think it's 1.5 minutes because 60/40=1.5
Step-by-step explanation:
The mapping below shows y as a function fo x?
True
False
Answer:
False
Step-by-step explanation:
x is the input and y is the output
the same input cannot have more than 1 output
-8 has 1 output
5 has 1 output
but "1" has 2 outputs
5. A factory produces 24532 bulbs in a month. What is its annual
production?
Answer:
294384
Step-by-step explanation:
Answer:
294384
Step-by-step explanation:
24532x12=294384
Pleasee help
Which set of ordered pairs does not represent a function?
A\{(8, -9), (7, -3), (6, -9), (9, 7)\}{(8,−9),(7,−3),(6,−9),(9,7)}
B\{(-4, 5), (1, 0), (1, -3), (8, 3)\}{(−4,5),(1,0),(1,−3),(8,3)}
C\{(-7, 5), (5, 5), (-3, 9), (0, -3)\}{(−7,5),(5,5),(−3,9),(0,−3)}
D\{(5, -2), (1, -7), (-3, -3), (-4, -2)\}{(5,−2),(1,−7),(−3,−3),(−4,−2)}
Answer:
B
Step-by-step explanation:
Hope This Helps!
Plz Mark Brainliest!
1. The amount of area covered by blackberry bushes in a park has been
growing by 12% each year. It is estimated that the area covered in 2009
was 4,500 square feet. Estimate the area that will be covered in 2020.
Question 15 :
A quadrilateral has three acute angles. If
each measures 80°, then the measure
of the fourth angle is
Answer:
120 degrees
Step-by-step explanation:
80*3=240
360-240=120
