Answer: Distributive hope this helps.
Step-by-step explanation:
Answer:
Distributive
Step-by-step explanation:
I took the test and got it right.
Which fraction is equivalent to 6/8. A.8/9. B.4/6. C.9/12. D.8/10
Answer:
C. 9/12Explanation:
6/8 simplifies to 3/4
3 × 3 = 9
4 × 3 = 12
Since they are both multiples of 3, it's equivalent to 6/8.
WILL GIVE BRAINLIEST
Answer:
C) 2x10²
Step-by-step explanation:
1400000/7000=
1400/7=
200=
2x10²
calculate the slope line that passes through points (0,3) (2,9)
Write an algebraic phrase for the following expression: d/12
Answer:
I dont know much about algebra but I know,
1 plus 1 equals two ♀️
For Babysitting Niki charges a flat fee of $10 plus 15 per hour if we want to know how many hours she work if she gets paid by $80 which equation is helpful
15x-10=85
10+15x=85
85-10x=15
85x-10=15
Solve for w. Only use numbers in your answer.
8w - 15 = 57
w =
Answer:
w = 9
Step-by-step explanation:
1. Add 15 from both sides: 8w = 72
2. Divide my 8: w = 9
Answer:
the answer for this question is 9
A beetle was running along a number line, Then the bug ran from 24 to 78. What distance did it cover? If this run took the bug 9 seconds, What was its average speed?
Answer:
it covered 54 and ran 6 per 9 second
Step-by-step explanation:
step 1. 78-24 = 54
step 2. 54/9 = 6
North Carolina sales tax is 7%. If you bought a video game and paid $2.38 in tax, how much was the video
game?
need help with this right now
Answer:
A = (2x+1)(3x+4)
Step-by-step explanation:
Area is length × height
4x + 7 − 23
In this expression, the coefficient is 4.
True or False
Answer:
True
Step-by-step explanation:
HELP ASAP!!!!! 20PTS!!
Answer:
the answer is 80!!!!!!!!!!
Step-by-step explanation:
Keisha is working on a math worksheet with 50 problems. she has completed 20 problems in 25 minutes. if she continues at the same pace how long will it take her to complete the worksheet
Answer:
About 42.5 or 42 1/2
Step-by-step explanation:
20 + 20= 40 + 10= 50
25 + 25= 30 + 12.5= 42.5
Srry if the explanation makes no sense I tried ;-;
Yaro buys a baseball cap for $9.50. He also buys a new baseball. Yaro speads $13.50 altogether.
Answer:
13.5 = 9.5 + x
x=4
Step-by-step explanation:
In this problem, the price of the baseball cap, which is $9.50, and a baseball, whose price is unknown (and therefore must be the variable), total $13.50. So, to set up the equation add the two prices and set them equal to the total, 9.5+x=13.5.
Then, using the subtraction property of equality subtract 9.5 from both sides. This means x=4, so the baseball cost 4 dollars.
Marge conducted a survey by asking 350 citizens whether they frequent the city public parks. Of the citizens surveyed, 240 responded favorably.
What is the approximate margin of error for each confidence level in this situation?
0.07
0.03
0.04
0.05
0.06
99%
95%
90%
Answer:
The margin of error for a 99% confidence interval is of 0.0639, that is, approximately 0.06.
The margin of error for a 95% confidence interval is of 0.0486, that is, approximately 0.05.
The margin of error for a 90% confidence interval is of 0.0408, that is, approximately 0.04.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which
z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].
The margin of error is:
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
350 citizens, 240 responded favorably:
This means that [tex]n = 350, \pi = \frac{240}{350} = 0.6857[/tex]
99% confidence level
So [tex]\alpha = 0.01[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.01}{2} = 0.995[/tex], so [tex]Z = 2.575[/tex].
[tex]M = 2.575\sqrt{\frac{0.6857*0.3143}{350}} = 0.0639[/tex]
The margin of error for a 99% confidence interval is of 0.0639, that is, approximately 0.06.
95% confidence level
So [tex]\alpha = 0.05[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.05}{2} = 0.975[/tex], so [tex]Z = 1.96[/tex].
[tex]M = 1.96\sqrt{\frac{0.6857*0.3143}{350}} = 0.0486[/tex]
The margin of error for a 95% confidence interval is of 0.0486, that is, approximately 0.05.
90% confidence level
So [tex]\alpha = 0.1[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.1}{2} = 0.95[/tex], so [tex]Z = 1.645[/tex].
[tex]M = 1.645\sqrt{\frac{0.6857*0.3143}{350}} = 0.0408[/tex]
The margin of error for a 90% confidence interval is of 0.0408, that is, approximately 0.04.
Identify the constant in the following expression:
6e + 4 + 7g + 5e + 5x - 2e
Answer: 9e
Step-by-step explanation:
A kite is flying at the end of a 20-meter string. If the string makes an angle of 55° with the ground, how many meters above the ground, to the nearest meter, is the kite
The total distance of Kite from the ground is 16.38 meters and this can be determined by using the trigonometric function.
Given :
A kite is flying at the end of a 20-meter string. The string makes an angle of 55° with the ground.The following steps can be used in order to determine the total distance of Kite from the ground:
Step 1 - The trigonometric functions can be used in order to determine the total distance of Kite from the ground.
Step 2 - The sine function is used to measure the distance. The mathematical expression of the sine function is:
[tex]\rm sin\theta = \dfrac{P}{H}[/tex]
where P is the perpendicular and H is the hypotenuse.
Step 3 - Now, substitute the values of the known terms in the above expression.
[tex]\rm sin55 = \dfrac{Distance}{20}[/tex]
Step 4 - Simplify the above expression.
Distance = 16.38 meters
For more information, refer to the link given below:
https://brainly.com/question/13710437
What is the equation of the line that passes through the point (-6, -6) and has a
slope of - 1/3
Answer:
The equation of the line is [tex]y = -\frac{1}{3}x - 8[/tex]
Step-by-step explanation:
Equation of a line:
The equation of a line has the following format:
[tex]y = mx + b[/tex]
In which m is the slope and b is the y-intercept.
Slope of - 1/3
This means that [tex]m = -\frac{1}{3}[/tex]
So
[tex]y = -\frac{1}{3}x + b[/tex]
Through the point (-6, -6)
This means that when [tex]x = -6, y = -6[/tex]. So
[tex]y = -\frac{1}{3}x + b[/tex]
[tex]-6 = -\frac{1}{3}(-6) + b[/tex]
[tex]b + 2 = -6[/tex]
[tex]b = -8[/tex]
The equation of the line is [tex]y = -\frac{1}{3}x - 8[/tex]
The golf club can send a team of six students to the next golf tournament if there are 23 students in the club how many different teams of six can be selected.
I need help!!!
Answer:
3 teams.
Step-by-step explanation:
1 team = 6 students
23 ÷ 6 = 3.8333
Since it ends up being a decimal, the nearest number would be 3 because 23 teams isn't enough for 4 teams.
7.) The mean rate for a satellite television from a sample of households was $51.00 per month,
with a standard deviation of $2.00 per month. Between what two values do 75% of the data lie?
(Assume a bell-shaped distribution.) (HINT: Chebychev's Theorem)
Answer: 75% of the rate lies in 47 per month and 55 per month.
Step-by-step explanation:
The mean rate for a satellite television from a sample of households was $51.00 per month, with a standard deviation of $2.00 per month.
According to the Chebychev's Theorem, atleast [tex](1-\dfrac{1}{k^2})[/tex] % of the data lies within k standard deviation from the mean.
For k=2
[tex]1-\dfrac1{2^2}=1-\dfrac14=\dfrac34=0.75\ or \ 75\%[/tex]
Alteast 75% of data lies within 2 standard deviation from mean.
i.e. 51-2(2) per month and 51+2(2) per month
i.e. 47 per month and 55 per month
Hence, 75% of the rate lies in 47 per month and 55 per month.
find 2 fractions with a sum that is between 0 and 1/2
Answer:
1/8, 2/8
1/8+2/8= 3/8
0/8<3/8<4/8
Step-by-step explanation:
The following information was obtained from independent random samples taken of two populations. Assume normally distributed populations with equal variances. Sample 1 Sample 2 Sample Mean 45 42 Sample Variance 85 90 Sample Size 10 12 The 95% confidence interval for the difference between the two population means is (use rounded standard error) a. -2.65 to 8.65. b. -5.344 to 11.344. c. -5 to 3. d. -4.86 to 10.86.
Answer:
95% Confidence Interval is; ( -5.344 to 11.344 )
Option b) -5.344 to 11.344 is the correct answer
Step-by-step explanation:
Given the data in the question;
Sample 1 Sample 2
x"₁ = 45 x"₂ = 42
S₁² = 85 S₂² = 90
n₁ = 10 n₂ = 12
df = [ S₁²/n₁ + S₂²/n₂ ]² / [ ((S₁²/n₁)²/n₁-1) + ((S₂²/n₂)²/n₂-1)) ]
we substitute
df = [ 10/10 + 90/12 ]² / [ ((85/10)²/10-1) + ((90/12)²/12-1)) ] = 19.64 ≈ 20
df = 20
with 95% confidence interval
∝ = 1 - 0.95 = 0.05
∝/2 = 0.05/2 = 0.025
now, [tex]t_{\alpha /2,df} = t_{0.025, 20} = 2.086[/tex] { from table }
95% confidence interval for N1 - N2
⇒ (x"₁ - x"₂) ± [tex]t_{\alpha /2,df}[/tex] × √( S₁²/n₁ + S₂²/n₂ )
⇒ (45 - 42) ± 2.086 × √( 85/10 + 90/12 )
⇒ 3 ± 2.086 × 4
⇒ 3 ± 8.344
so;
Lower Limit = 3 - 8.344 = -5.344
Upper Limit = 3 + 8.344 = 11.344
Therefore, 95% Confidence Interval is; ( -5.344 to 11.344 )
Option b) -5.344 to 11.344 is the correct answer
Aaaah i in one grafe an I nee help wit dis wha is 1+1
Answer:
2
Step-by-step explanation:
...
Yuhhhhhhhhhhhhhhhh I need help
Answer:
JUST DO 3.142 X 10
ANSWER: 31.42 IN
Step-by-step explanation:
Please mark as brainliest
Have a great day, be safe and healthy
Thank u
XD
Find the slope and the y-intercept of the graph of the linear equation y=-7x+3
Answer:
The slope is -7 . The y intercept is (0 , 3)
Answer:
x= -1/7y+3/7
Step-by-step explanation:
step 1: −7x+3=y
Step 2: Add -3 to both sides.
−7x+3+−3=y+−3
−7x=y−3
Step 3: Divide both sides by -7.
In ΔWXY, w = 8.1 inches, x = 2.9 inches and y=5.5 inches. Find the measure of ∠Y to the nearest 10th of a degree.
Using cosine rule, the value of angle Y in the triangle is 21.3 degrees
Cosine RuleThe cosine rule is a mathematical formula used to calculate the length of the sides of a triangle when the angles and one side are known. It states that the square of the length of any side of a triangle is equal to the sum of the squares of the other two sides minus twice the product of those sides multiplied by the cosine of the angle between them.
Mathematically, this is expressed as;
y² = x² + w² - 2xwCos(y)
Data given;
w = 8.1 inx = 2.9 iny = 5.5 in∠Y = ?Substituting the values into the formula above;
y² = x² + w² - 2xwCos(y)
5.5² = 2.9² + 8.1² -2(2.9)(8.1)cosY
30.25 = 8.41 + 65.61 - 46.98cosY
30.25 = 74.02 -46.98cosY
46.98cosY = 74.02 - 30.25
46.98cosY = 43.77
cos Y = 43.77 / 46.98
cos Y = 0.9317
Y = cos⁻¹(0.9317)
Y = 21.3°
Learn more on cosine rule here;
https://brainly.com/question/4372174
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Iodine-131 has a half-life of 8 days. How much would be left of an original 40 g sample after 40 days?
a) 32g
b) 8g
c) 131g
d) 1.25g
e) 0.8g
Answer:
d) 1.25 g
Step-by-step explanation:
If it has a half life of 40 days, there will be 5 half-lives in that span of time so if you divide 40 by 2, 5 times or just [tex]\frac{40}{2^{5} }[/tex], it will equal 1.25.
[tex]\frac{40}{2}=20\\[/tex]
[tex]\frac{20}{2} =10[/tex]
[tex]\frac{10}{2} =5[/tex]
[tex]\frac{5}{2} =2.5\\[/tex]
[tex]\frac{2.5}{2} =1.25[/tex]
Answer: 1.25g
Step-by-step explanation:
Got it rght on an assignment
A person invested 3,900 in an account growing at a rate allowing the money to double every 7 years. How much money would be in the account after 18 years to the nearest dollar
Answer:
23182 or 23181.5109105
Step-by-step explanation:
A square picture frame with each side length represented by 3x -
5 has a perimeter of 52 inches. What is the value of x?
A. x = 3
u
B. x = 5
C. x = 6
D. x = 13
Answer:
C. X=6
Step-by-step explanation:
Length of one side =52/4= 13
3X-5= 13
3x = 13+5
X= 18/3
X= 6
A carpenter buys a box containing 0.6 kilogram of nails. Each nail has a mass of 5 grams. How many nail are in the box?
Two shops, Tisco and Azda, sell the same brand of baked beans with the following deals.
Calculate the price per 20 items.
Write down which shop is the best value in the comment box.
Tisco= 4 for £1.04
Azda= 5 for £1.35
Answer:
Tisco shop
Step-by-step explanation:
The computation is shown below;
For tisco,
= 20 ÷ 4 × £1.04
= £5.2
For Azda,
= 20 ÷ 5 × £1.35
= £5.4
As if we can see that the tisco cost is lower than the azda cost so here the best value represent the tisco shop