Answer:
1,42 * 10 ^ -5
Step-by-step explanation:
La notación científica también se conoce como forma estándar.
Tenemos que realizar la siguiente operación y dejar el resultado en forma estándar.
Entonces;
0,00000826 * 235 × 10 ^ -7 / 0,0017 × 10 ^ -2
También;
8.26 * 10 ^ -6 * 2.35 * 10 ^ -5 / 1.7 * 10 ^ -5
= 19,411 * 10 ^ -11 / 1,7 * 10 ^ -5
= 1,42 * 10 ^ -5
Find the length of the third side. If necessary, round to the nearest tenth.
Answer:
13.9
Step-by-step explanation:
3rd side = a
a² + b² = c²
a² + 8² = 16²
a² + 64 = 256
a² = 192
[tex]\sqrt{a^2} =\sqrt{192}[/tex]
a = 13.856
Rounded to tenths:
13.9
A gray crayon is made with 5mL of black wax for every 6 mL of white wax
Answer:
the answer is option B and option C
Step-by-step explanation:
A zoo randomly sampled three groups of 100 people on what their favorite type of bear is. The data shows the results of the three samples.
Black Bear Grizzly Bear Polar Bear Total
Group 1 24 30 46 100
Group 2 23 34 43 100
Group 3 22 29 49 100
The zoo has 3380 visitors one weekend.
Based on the samples, what is a reasonable estimate of the number of people who will prefer polar bears?
Enter your answer rounded to the nearest whole number in the box.
Answer:
1555 people
Step-by-step explanation:
First, average the votes for polar bears.
(46 + 43 + 49)/3 = 46
Next, make the variable x equal to the estimate of the number of people who will prefer polar bear out of the 3380 people and set up your proportion equation.
x/3380 = 46/100
x = 1554.8
Round to the nearest whole number to get 1555.
Answer:
I took the quizz and the awnser is 1555
Two ride-sharing companies, A and B, provide service for a certain city. A random sample of 52 trips made by Company A and a random sample of 52 trips made by Company B were selected, and the number of miles traveled for each trip was recorded. The difference between the sample means for the two companies
(A−B) was used to construct the 95 percent confidence interval (1.86,2.15).
Which of the following is a correct interpretation of the interval?
A. We are 95 percent confident that the difference in sample means for miles traveled by the two companies is between 1.86 miles and 2.15 miles.
B. We are 95 percent confident that the difference in population means for miles traveled by the two companies is between 1.86 miles and 2.15 miles.
C. The probability is 0.95 that the difference in sample means for miles traveled by the two companies is between 1.86 miles and 2.15 miles.
D. The probability is 0.95 that the difference in population means for miles traveled by the two companies is between 1.86 miles and 2.15 miles.
E. About 95 percent of the differences in miles traveled by the two companies are between 1.86 miles and 2.15 miles.
3. Two community service groups, J and K, each have less than 100 members. Members of both groups volunteer each month to participate in a community-wide recycling day. A study was conducted to investigate whether the mean number of days per year of participation was different for the two groups. A random sample of 45 members of group J and a random sample of 32 members of group K were selected. The number of recycling days each selected member participated in for the past 12 months was recorded, and the means for both groups were calculated. A two-sample t-test for a difference in means will be conducted. Which of the following conditions for inference have been met?
I. The data were collected using a random method.
II. Each sample size is less than 10 percent of the population size.
III. Eachsamplesizeislargeenoughtoassumenormalityofthesampling
distribution of the difference in sample means.
A. I only
B. II only
C. III only
D. I and III only E. I, II, and III
The correct interpretation of the interval is:
B. We are 95 percent confident that the difference in population means for miles traveled by the two companies is between 1.86 miles and 2.15 miles.
The conditions for inference that have been met are: D. I and III only.
For the first question, the correct interpretation of the confidence interval is:
B. We are 95 percent confident that the difference in population means for miles traveled by the two companies is between 1.86 miles and 2.15 miles.
This interpretation reflects the fact that the confidence interval was constructed based on the sample means, but it provides an inference about the population means of the two companies.
For the second question, the conditions for inference that have been met are:
D. I and III only
I. The data were collected using a random method.
This ensures that the samples are representative of the population.
III. Each sample size is large enough to assume normality of the sampling distribution of the difference in sample means.
This condition implies that the sample sizes are sufficiently large to rely on the central limit theorem, which states that the sampling distribution approaches a normal distribution as the sample size increases.
Condition II, which states that each sample size is less than 10 percent of the population size, is not explicitly mentioned in the question. Therefore, we cannot assume that this condition has been met.
For similar question on confidence interval.
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Which data set could be represented by the box plot shown below?
Answer:
The answer i got was B
the area is ___ square units
Answer:
392 square units
Step-by-step explanation:
We can make 2 right trapezoids out of this shape.
The area of a trapezoid would be 1/2×(b1+b2)×h or (b1+b2)×h ÷ 2.
If we do 1 half it would be 1/2×(14+14)×14 = 196
Now if we multiply by 2 (because we have 2 trapezoids) it would be 392.
6 of 8
What single percentage change is equivalent to a 9% decrease followed by a 17% decrease?
Answer: your answer is 26%
plz help and explain
Answer:
Step-by-step explanation:
4.)
x-4
5.)
Eucardo's collection of butterflies: 12+2x
7th Grade
Based on the graph, which two months are responsible for a combined %20 of birthdays?
Here is the information :
Jan. 21
Feb. 10
March 23
April 20
May 5
June 11
Graph below.
Please help, Thank you.
Your sister's job requires a lot of traveling. Last week, she drove a different distance each day: 135, 150, 86, 54, and 105 miles. Find the first quartile of the set of distances.
Answer:
70
Step-by-step explanation:
Your sister's job requires a lot of traveling. Last week, she drove a different distance each day: 135, 150, 86, 54, and 105 miles. Find the first quartile of the set of distances.
We rearrange the terms
54, 86, 105, 135, 150
First Quartile formula =
1/4 (n + 1)th term
215% of what number is 43
Answer:
20
Step-by-step explanation:
215% of 20 is 43
Answer:
20
Step-by-step explanation:
2.15x = 43
43 divided by 2.15 is 20! :)
HELP MI PLSSS!!! I WILL GIVE POINTS AND BRAINEST!!!
Answer:
x≈5.3 feet
Step-by-step explanation:
[tex]\frac{4}{15} =\frac{x}{20}[/tex]
[tex]15x=80[/tex]
x≈5.3 feet
Answer:
5.3m tall
Step-by-step explanation:
15/4 = 3.75
20/3.75= 5.3333333
a weather man is found to be correct 80% of the time ( 80 out of 100 ) if he gives 375 forecasts how many of them will be correct
Please answer correctly! I will mark you as Brainliest!
Answer:
1024pi/3
Step-by-step explanation:
to find the volume of a sphere you use the equation 4/3*pi*r^3
4/3*pi*8^3
4/3*pi*512
2048/3 pi
This is the volume of the whole sphere but we only need half so we can just divide by 2.
(2048/3 pi)/2
1024/3 pi
HELP HELP HELP!! I’ll mark brainliest!! If a combination is randomly chosen, what is the probability of someone getting a salad and a chicken sandwich?
Answer:
1/12
Step-by-step explanation:
because because you have one choice out of 12 choices and that gives you 112
A parabola can be drawn given a focus of (4, -8) and a directrix of y=-6
. What can be said about the parabola?
Answer:
y = 1/4 (x-4)² - 7
Step-by-step explanation:
Point (x , y) on the parabola, focus of (4, -8) and a directrix of y= -6
√(x-4)²+(y- -8)² = √(y- -6)²
(x-4)² + (y+8)² = (y+6)²
(y+8)² - (y+6)² = (x-4)²
(y²+16y+64) - (y²+12y+36) = (x-4)²
y²+16y+64-y²-12y-36 = 4y+28 = (x-4)²
4y = (x-4)² - 28
y = 1/4 (x-4)² - 7
standard formula of parabola: y = a(x-h)² + k (h,k): vertex (4,-7)
The value of equation of parabola is,
⇒ y = 1/4 (x-4)² - 7
What is Parabola?A parabola is a U-shaped plane curve where any point is at an equal distance from a fixed point (known as the focus) and from a fixed straight line, which is known as the directrix.
Now,
Let a point (x , y) on the parabola, focus of (4, -8) and a directrix of y= -6
Hence, We can formulate;
⇒ √(x-4)²+(y- (-8))² = √(y- (-6))²
⇒ (x-4)² + (y+8)² = (y+6)²
⇒ (y+8)² - (y+6)² = (x-4)²
⇒ (y²+16y+64) - (y²+12y+36) = (x-4)²
⇒ y²+16y+64-y²-12y-36 = 4y+28 = (x-4)²
⇒ 4y = (x-4)² - 28
⇒ y = 1/4 (x-4)² - 7
Thus, The value of equation of parabola is,
⇒ y = 1/4 (x-4)² - 7
Learn more about parabola visit:
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Please help !!!!!!!!!
Answer:
/??????
Step-by-step explanation:
Alan made $396 for 18 hours of work. At the same rate, how much would he make for 11 hours of work?
Answer:
Step-by-step explanation:
I think it is helpful to set this up as a proportion as it is the easiest way in my opinion.
1st step: 396/18 and x/11
This is the way you set up the proportion.
2nd Step: You would have to multiply 396 and 11 then divide the value by 18.
396x11 = 4,356
4,356/18 = 242
x=242 Dollars
Answer: 242 dollars
Therefore, Alan would make 242$ while working at the same rate for 11 hours.
Match these 1. supplementary angles 2.vertical angles
3. complementary angles
Angles A and B are formed by a
pair of intersecting lines, have an equal
measure of 50° and share a common
vertex angle.
Angles A and B are formed by a
pair of intersecting lines, share a
common adjacent side, and have a sum
of 180°
Angles A and B are formed by a
pair of intersecting lines, share a
common adjacent side and have a sum
of 90°
Answer:
Vertical Angles:
Angles A and B are formed by a
pair of intersecting lines, have an equal
measure of 50° and share a common
vertex angle.
Supplementary Angles:
Angles A and B are formed by a
pair of intersecting lines, share a
common adjacent side, and have a sum
of 180°
Complementary Angles:
Angles A and B are formed by a
pair of intersecting lines, share a
common adjacent side and have a sum
of 90°
FR33 P0IN7$ F0R B43$
BR4INLI3$T IF Y0U TR4N$L4T3 T7IS
Answer:
fr.ee points for base brain.liest if you translate this.
Step-by-step explanation:
ok
Answer:
fr.ee points for base brain.liest if you translate this.
Step-by-step explanation:
Me smurt
Y= -16x^2+181x+59 is the question
Answer:16x2 + 181x + 59
Step-by-step explanation:It cannot be factored
Answer:
Step-by-step explanation:
11.26 is the correct answer
Zain bought ice cream and sherbet at the grocery store and is placing the containers in the freezer. The container of ice cream was sold in a 10” 14” 12” container, and the sherbet was sold in an 11” 18” 9” container. How much less space does the container of ice cream occupy than the container of sherbet?
Answer:
102 in^3.
Step-by-step explanation:
Volume of the ice cream container = 10*14*12 = 1680 in^3.
Volume of the sherbet container = 11*18^9 = 1782 in^3.
So the answer is 1782 - 1680
= 102 in^3.
Find the volume of a cone with a base of 6 yd and a height of 10 yd.
Answer:
20cubic yard
Step-by-step explanation:
Volume of cone formula:1/3hπr^2=1/3h(base)
1/3(6)(10)=20cubic yard
find the GCF of 30x^3 and 12x^4
Answer:6x^3
Step-by-step explanation: That’s the biggest factor that can be taken out of both equations
The circumference of a circle is 69.08 millimeters. What is the circle's diameter? Use 3.14 for .
Answer: 22
Step-by-step explanation: Divide the total by pi or 3.14 and the diameter is 22 and the radius is 11
hello please help thanks
Answer:
D. Precipitation
Step-by-step explanation : Gravity causes precipitation to fall from clouds and water to flow downward on the land through watersheds. Energy from the sun and the force of gravity drive the continual cycling of water among these reservoirs. As the water is heated, it changes state from a liquid to a gas.
Do NOT guess just answer the question correctly
Jason paid $239 to join the country club on January 1, 2020. there is a monthly fee of $50. It costs an additional $5 every time he reserves a tennis court and $5 for a bucket of tennis balls. Last year he played tennis 30 times and only brought 1 bucket of balls each time. how much did he spend in 2020?
50 POINTS TO ANSWER CORRECTLY AND MARKED BRAINLY
What is the IQR (interquartile range)?
Minimum value = 5
Q1=7.5
Median = 13
Q3=17
Maximum value = 23
Enter your answer in the box.
Answer:
IQR (interquartile range) = 9.5Step-by-step explanation:
Q¹ = 7.5
Q³ = 17
IQR = Q³ - Q¹
IQR = 17 - 7.5
IQR = 9.5
WILL MARK BRAINLIEST IF CORRECT PLEASE HELP
Answer:
[tex]\frac{4\sqrt{7}}{7} \text{ and } \frac{3\sqrt{7}}{7}[/tex]
Step-by-step explanation:
if [tex]\sec x = \frac{4}{3}[/tex], then that means that it is the angle of a right triangle with the hypotenuse equal to 4 and one of the legs (specifically the adjacent leg) equal to 3, since sec(x) is defined as hypotenuse over the adjacent side.
The other leg (specifically the opposite one) will be equal to [tex]\sqrt{16-9} = \sqrt{7}[/tex] by the pythagorean theorem, so csc(x) = hypotenuse over opposite side = [tex]\frac{4}{\sqrt{7}}=\frac{4\sqrt{7}}{7}[/tex].
cot(x) is defined as adjacent over opposite, which is equal to [tex]\frac{3}{\sqrt{7}}=\frac{3\sqrt{7}}{7}[/tex]
That means that the first option, the leftmost one, is correct.
OMG PLS HELP WITH THIS IM PANICKING OMG I GOT A F IN MATH MY MOM JUST YELLED AT ME IM CRYING PLS HELP WITH THS-
Sorry about that, here's the answers.
1. expanded form
2. regroup
3. place value
4. A, C, D. The strategy I used was place value and regrouping. I chose these by using place value to help me understand how to regroup and what each option would sum to.
5. D. Ten thousands place
Answer:
1. Expanded form
2. Regroup
3. Place value
4. A, C, D,
C is correct because a one is equal to 1.
1 x 4,200 = 4,200. Therefore 4,200 ones is equal to 4,200. D is correct because a ten is equal to 10. 10 x 420 = 4,200. Therefore, 420 tens is equal to 4,200. A is the same as the rest but with hundreds.
5. A
Step-by-step explanation:
1. Expanded form refers to when a number is separated by place values. Like 555,555 being turned into 500,000 + 50,000 + 5,000 + 500 + 50 + 5.
2. Regrouping is separating number by places values to do an equation like subtraction. For example, 5 tens - two ones.
3. Place values refers to a digit in a number like the 1 in 2,134 is in the hundreds place and the 5 in 5,677 is the thousands place.
4. My answer explains it.
5. A is correct as the 2 in 321,705 is 20,000 while the 2 in 32,571 is 2,000. 20,000 is 10 times larger than 2,000. So the answer is 10.