Answer:
(28000,40000) or $28,000 to $40,000
Step-by-step explanation:
plug in values as V and solve for x:
12,000=22,000-0.25x
-10,000=-0.25x
40,000=x
15,000=22,000-0.25x
-7,000=-0.25x
28,000=x
an interval notation always has the lower value first so its:
(28000,40000) or $28,000 to $40,000
Is -20 a whole number, integer and rational number or is it just an integer and rational number?
Answer:
-20 is an integer and a rational number
Step-by-step explanation:
it can't be a whole number because a whole number is an integer that is 0 or greater.
Please help ASAP!, answer as much as you want but I need these answer! Please and thank you have a great and blessed day!
Answer:
Step-by-step
5. D
6. B
7.B
-4y-8 rewrite factored expression
Answer:
2[-2y-4]
Step-by-step explanation:
2[-2y-4]=-4y-8
Factor of -4y-8 is -4(y+2) or 4(-y-2) or -2(2y+4) or 2(-2y-4).
Please help I’ll give Brainliest
Answer:
1. 5 cm^2
2. 9.375 cm^2
3. 3/10 cm^2
4. 3/28 m^2
Step-by-step explanation:
Suppose you go shopping for a new futon bed for your room. The model you really like happens to be on sale for $1125. It's original price is $1200. What percent of the original price will you save if you purchase it?
Answer:
9.375% rounded 9%
Step-by-step explanation:
so if the original price is 1200 that is equal to 100% so if 1200=100% then to get ten percent of 1200 u would divide 1200 by 10 which gets you 120 and if the sale price is 1125 then u do 1125 divide by 120 because that is 10% so that gives you 9.357 and you add you percentage on and there is your anwser hope this helped ;)
solve it pleeeasseee will give brainliest
Answer:
A
Step-by-step explanation:
just multiply
656.64417
rounded
= 656.6
Instructions: Simplify each expression by combining like terms.
1. -8(r-2) + 6(r-2)
2. 6-2(3x+4)
WILL MARK BRAINLIEST!!!!
Answer:
1. −2r+4 2. -6x-2
pls branliest ; )
How to convert 2 years 4 months to years
Answer:
2 1/3 years
Step-by-step explanation:
4 months = 1/3 years
2 + 1/3 = 2 1/3 years
Answer:
2.25 years
Step-by-step explanation:
MNM Corporation gives each of its employees an aptitude test. The scores on the test are normally distributed with a mean of 75 and a standard deviation of 15. A simple random sample of 25 is taken from a population of 500.
a. What are the expected value, the standard deviation, and the shape of the sampling distribution of?
b. What is the probability that the average aptitude test in the sample will be between 70.14 and 82.14?
c. What is the probability that the average aptitude test in the sample will be greater than 82.68?
d. What is the probability that the average aptitude test in the sample will be less than 78.69?
e. Find a value, C, such that P(( x>C) = .015.
Answer:
a) The expected value is 75, the standard deviation is 3 and the shape is approximately normal.
b) 0.9387 = 93.87% probability that the average aptitude test in the sample will be between 70.14 and 82.14.
c) 0.0052 = 0.52% probability that the average aptitude test in the sample will be greater than 82.68.
d) 0.8907 = 89.07% probability that the average aptitude test in the sample will be less than 78.69.
e) C = 81.51.
Step-by-step explanation:
To solve this question, we need to understand the normal probability distribution and the central limit theorem.
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].
The scores on the test are normally distributed with a mean of 75 and a standard deviation of 15.
This means that [tex]\mu = 75, \sigma = 15[/tex]
a. What are the expected value, the standard deviation, and the shape of the sampling distribution of?
By the Central Limit Theorem, it will be approximately normal, with expected value [tex]\mu = 75[/tex] and standard deviation [tex]s = \frac{15}{\sqrt{25}} = 3[/tex].
b. What is the probability that the average aptitude test in the sample will be between 70.14 and 82.14?
This is the pvalue of Z when X = 82.14 subtracted by the pvalue of Z when X = 70.14.
X = 82.14
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
By the Central Limit Theorem
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]Z = \frac{82.14 - 75}{3}[/tex]
[tex]Z = 2.38[/tex]
[tex]Z = 2.38[/tex] has a pvalue of 0.9913.
X = 70.14
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]Z = \frac{70.14 - 75}{3}[/tex]
[tex]Z = -1.62[/tex]
[tex]Z = -1.62[/tex] has a pvalue of 0.0526
0.9913 - 0.0526 = 0.9387
0.9387 = 93.87% probability that the average aptitude test in the sample will be between 70.14 and 82.14.
c. What is the probability that the average aptitude test in the sample will be greater than 82.68?
This is 1 subtracted by the pvalue of Z when X = 82.68. So
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]Z = \frac{82.68 - 75}{3}[/tex]
[tex]Z = 2.56[/tex]
[tex]Z = 2.56[/tex] has a pvalue of 0.9948.
1 - 0.9948 = 0.0052
0.0052 = 0.52% probability that the average aptitude test in the sample will be greater than 82.68.
d. What is the probability that the average aptitude test in the sample will be less than 78.69?
This is the pvalue of Z when X = 78.69. So
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]Z = \frac{78.69 - 75}{3}[/tex]
[tex]Z = 1.23[/tex]
[tex]Z = 1.23[/tex] has a pvalue of 0.8907.
0.8907 = 89.07% probability that the average aptitude test in the sample will be less than 78.69.
e. Find a value, C, such that P(( x>C) = .015.
This is X when Z has a pvalue of 1 - 0.015 = 0.985. So X when Z = 2.17.
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]2.17 = \frac{X - 75}{3}[/tex]
[tex]X - 75 = 3*2.17[/tex]
[tex]X = 81.51[/tex]
So C = 81.51.
What is the value of x?
I am thinking of two numbers.
They have a difference of 2.
The sum of the two numbers is 14.
What is the product of the two numbers I am thinking of?
Thank you! :D
Answer:
6 and 8
Step-by-step explanation:
6+8=14 difference 2
Step-by-step explanation:
Let x and y be the 2 numbers, where x has a greater value than y.
We have x - y = 2 and x + y = 14. Adding the 2 equations up, we get 2x = 16, x = 8.
Then (8) + y = 14, y = 6.
Since the numbers are 8 and 6, the product is 48.
The doctor prescribes Sam a 140 ml bottle of medicine with the instructions to take 5 ml twice a day. How long does the medicine last? Show your solution
Answer:
14 days
Step-by-step explanation:
14
A delivery truck is transporting boxes of two sizes: large and small. The combined weight of the large box and a small box is 70 pounds. The truck is transporting 55 large boxes and 65 small boxes. if the truck is carrying a total of 4150 pounds in boxes, how much does each type of box weight.
large box :
smaller box:
Answer:
3.45
Step-by-step explanation:
you have to do tihis then that
Pls hurry I need help on this
On a separate sheet of paper practice drawing a 10ft. Vertical line at three different scales using American system:
1) 1/2” = 1’;
2) 1/2” = 1’;
3)1/8” = 1’;
Draw also 12m. Vertical line at three different scales using the Metric System
4) 1/50 CM;
5) 1/100 CM;
6) 1/200 CM;
A street on a block plan is drawn at a scale of 1”=50’. When the drawing is measured with a ruler, the street is 1/2” wide. How wide is the actual street? Explain
Answer:
A street on a block plan is drawn at a scale of 1”=10’. When the drawing is measured with a ruler, the street is 5” wide. How wide is the actual street? Explain
Answer:
In your own words describe the three types of scale answer here:
En una Homs de paper separada, practique el dibujo de una linea vertical de 10 pies a tres escalate diferentes untilizando Sistema Americano:
1/2 “=1’;
1/2 “=1’;
1/8 “=1’;
Dibuja tamben una linea vertical de 12m. A tres escalas diferentes untilizando el Sistema Metrico:
4) 1/50 CM;
5) 1/100 CM;
6) 1/200 CM;
Una Calle en un plano de bloque se dibuja a una escala de 1 “=50 cuando el dibujo se mide con una regal, la calle tiene 1/2 “de ancho qué anchura real tiene la Calle? Explique
Una Calle en un Plano de bloque se dibuja a una escala de 1 “= 10 cuando el dibujo de mide con una regal, la Calle tiene 5 “ de ancho qué anchura real tiene la Calle? Explique
En sus palabras descibe las tres tipos de escala.
Escribe Aqui:
Help me
Answer:
Step-by-step explanation:ok
Algebra question
5m = 60
Answer:
5m=60
Divide each term in 5m=60 by 5.
5m/5=60/5
Cancel the common factor of 5.
m=60/5
Divide 60 by 5.
m=12
Step-by-step explanation:
Hope it is helpful...
dont just say a random percentage to get brainliest i actually need help
Answer:
8/40 = 20%
Step-by-step explanation:
Simply count the cubes in the blue rectangle, then count the cubes in the red rectangle. Divide red by blue, multiply that by 100. Thus giving your percent.
Vectors x and y have lengths 18 and 24 respectively, and the cosine of the angle between them is StartFraction 5 Over 9 EndFraction. Find the scalar projection of x onto y and their dot product.
Answer:
xy = 10
x · y = 240
xy = 10
x · y = 240
It is indeed correct on Edge 2021
Answer:
10
240
Step-by-step explanation:
Edge 2021
PLEASE HURRY HELP ME DUE IN 5 MIN WILL MARK BRAINLEST
Answer:
parallel
Step-by-step explanation:
Define area. Give an example of how it is used in the real world. What label (units, units 2 , or units 3 ) is used for it?
Step-by-step explanation:
mmmmmkkkkkkkkkkkkkkkkkk
A triangle has side lengths of 17 cm and 7 cm. Which could be the value of the third side, 25 cm or 20 cm? PLEASE EXPLAIN
Answer:
i think 25 couse... it depends of degre of triangle but just draw it and u will see
Hello going to fail and not make it to highschool if I don’t pass this test!! Please help
Answer:
Step-by-step explanation:
(0, -1) (3,3)
(3 + 1)/(3 - 0) = 4/3
y + 1 = 4/3(x - 0)
y + 1 = 4/3x - 0
y = 4/3x - 1
answer is A
Each circle counts as one whole. Write a mixed number giving the amount shaded. Then, write this amount as an improper fraction.
Answer:
3 1/3 and 10/3
Step-by-step explanation:
Answer:
mixed number: 3 1/3
improper fraction: 9/3
(if you want this simplified it, it would be 3/1 or just 3)
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This is corey copy&paste him all over ur brainly questions lol
Answer:
uhdheoebeje
Step-by-step explanation:
loleyseedrrirj
Answer:
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This is corey copy&paste him all over ur brainly questions lol
Step-by-step explanation:
It costs $11.25 for 3 Italian ices at Rita's. How much would 12 Italian ices cost?
$3.75
$3.20
$33.75
$45
Answer:
$45
Step-by-step explanation:
11.25/3= 3.75 x 12 = 45
2(a -3) + 4b - 2(a -b -3) + 5
simplify
Answer:
Simplify the expression.
6 b + 5
Step-by-step explanation:
I hope this helps! Have a great day!
Answer:
6b+5
Step-by-step explanation:
2(a-3)+4b-2(a-b-3)+5
=2a-6+4b-2a+2b+6+5
the 2as and the 6s canel out so we are left with
6b+5
what is -11/40 - 0.278 in decimal form
(pls this is due tmr)
Answer:
-0.553
Step-by-step explanation:
First we convert the fraction into a decimal: -11/40 = -0.275
Then, add both numbers because when you subtract a negative from a positive, you are basicaly adding the numbers.
-0.275- 0. 278= -0.553
Have a great day!
Which point on the graph represents the y-intercept?
V
W
Y
Z
Answer:
W
Step-by-step explanation:
Because the y-intercept is the line that passed through the y-axis
the ratio of the base to the leg of an isosceles triangle is 2:7. if the perimeter of the triangle is 304 feet, find the length of the base
Step-by-step explanation:
I hit a expected tomorrow:No for completion of a
The required base of the isosceles triangle is given as 38 feet.
What is the isosceles triangle?A triangle with two sides and two congruent angles is called an isosceles triangle.
here,
For a given isosceles triangle,
side/base = 2 / 7
side = 2/7 base = 7 /2 sides
According to the question,
The perimeter of the triangle is 304 feet,
2 side + base = 304
2 [7/2 base] + base = 304
8 base = 304
base= 304 / 8
base = 38 feet
Thus, the required base of the isosceles triangle is given as 38 feet.
Learn more about the isosceles triangle here: https://brainly.com/question/2456591
#SPJ5
Assume AABC= ADEF. If DE = 18, BC = 10, and CA = 25, what is the length
of DF?
Answer:
D. 25
Step-by-step explanation:
in triangle congruence statements the order of the letters tells you which pieces of the triangles line up, thus ab = de, bc = ef, and ac = df, since ac = 25 that means df = 25