Answers
Answer:
a
Step-by-step explanation:
Step-by-step explanation:
answer is A, please trust me if I'm right give me brainiest
Related Questions
What is the answer to 3/4x1/7
Answers
Answer:0.1072
Step-by-step explanation:
Siri
PLSSSSSS I NEED HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Simplify the Expression:
[tex]\sqrt{9a^{2} }[/tex], if a<0
Answers
[tex]\sqrt{9a^{2}}=\sqrt{9}\sqrt{a^{2}}=3|a|[/tex]
As [tex]a < 0[/tex], [tex]|a|=-a[/tex], so [tex]3|a|=\boxed{-3a}[/tex]
The administrators at the University of Oklahoma wonder if Oklahoma residents or non-Oklahoma residents differ in their excitement to go home for the holidays following final exams. They randomly select 100 Oklahoma residents and 100 non-Oklahoma residents for their study. They then ask all participants to rate their excitement level on a scale of 1-10. The mean excitement level for Oklahoma residents was 7.745, while the mean excitement level for non-Oklahoma residents was 7. They create the following 95% confidence interval for the mean difference: -1.78 to 3.27. Which of the following is the best way to interpret their results based on their confidence interval?
a. The administrators are 95% confident that Oklahoma residents are significantly more excited than non-Oklahoma residents to go home for the holidays.
b. The administrators are 95% confident that Oklahoma residents are significantly less excited than non-Oklahoma residents to go home for the holidays.
c. The administrators are 95% confident that Oklahoma residents significantly differ from non-Oklahoma residents in their excitement to go home for the holidays because their interval covers 0.
d. The administrators are unable to tell if there is a true difference between Oklahoma and non-Oklahoma residents in their excitement to go home for the holidays because their interval covers 0.
Answers
Answer:
d. The administrators are unable to tell if there is a true difference between Oklahoma and non-Oklahoma residents in their excitement to go home for the holidays because their interval covers 0.
Step-by-step explanation:
The confidence interval refers to a rabje of statistically calculated values used in establishing a certain level of confidence in the outcome of a data.
The confidence interval is calculated thus :
Mean ± (Zcritical * Error)
The ± sign ensures we have the lower and upper boundary of our confidence level.
From the confidence level given in the question : -1.78 to 3.27
Since 0 is contained in the confidence interval range given, then it can be concluded that the difference in excitement between Oklahoma and non oklahoma residents cannot be adequately established.
What is a unit rate? *
items of different measures being compared
a ratio in which the second value is one
a comparison of two quantities by division
0 This is a required question
Answers
Answer:
a ratio in which the second value is one
Step-by-step explanation:
Hope this helps!
Answer: How much of something per 1 unit of something else. Examples: • 100 cars pass by in 2 hours. The unit rate is 50 cars per hour. • You can paint 3 boards in half an hour. The unit rate is 6 boards per hour. • 200 sausages were eaten by 50 people. The unit rate is 4 sausages per person. • They need 5 m of thread to make 2 cm of cloth.
Step-by-step explanation: Just wanted to give a example if that doesn't help go to google and watch a video or do some reading about it!
Aaliyah had some candy to give to her four children she first took 10 pieces of herself and then evenly divided the raise among her children each to receive two pieces with how many pieces did she start
Answers
Answer:
she started with 18
Step-by-step explanation:
2(4)+ 10= 18
Sam’s height is 1.58 m. His younger brother Tom’s height is 0.4 m less than his height. What is Tom’s height?
A)1.58 m B) 1.54 m C)1.98 m D) 1.18 m
Answers
Sam's height= 1.58m
Tom's height= 0.4m less than Sam's
= (1.58- 0.4)m
= 1.54m
What is 25% of 8. ??????????????????
Answers
Answer:
2
Step-by-step explanation:
1/4 of 8 = 25%
25% = 1/4
8 / 4 = 2
For the right triangle shown, which equation is correct?
1. all answers are correct
2. cos(53) = x/16
3. cos(53) = sin(37)
4. sin(37) = 16/x
Answers
Answer:
3.37
Step-by-step explanation:
x+37+16+90=180
x+143=180
×=180-143
x = 37
30 POINTS BRAINLY FIRST REAL RESPONSE
Step 3: Applying linear functions
Grace and Claire’s parents are saving money now for their college education. Function 1 shows the growth of baby Grace’s college fund over time. Function 2 shows growth of baby Claire’s college fund over time.
a) If Grace and Claire’s parents each invested $7,600 into a college saving account when the girls were born, how much money will each girl have for college when she turns 18? Explain. (2 points)
b) Do the functions show a positive or negative correlation between time and the amount of money saved? Explain. (1 point)
Answers
Answer:
For A
For grace the x would be the number 18
y = 1000 (18) + 7600
y= 18000 = 7600
and that would mean y = 25600
Now for Claire you have to use the method rise over run
The equation for claire is y=800x + 7600
11600-10000/3=800
---------------------------------------
y= 800(18) + 7600
y= 14,400 + 7600
y= 22,000
This shows that Claire would have $22,000 when shes 18 and Grace would have $25,600 when she is 18.
1
For every 2 teaspoons of white vinegar in a jar of homemade glue, there are 5 tablespoons of
cornstarch. How many teaspoons of white vinegar are there for every tablespoon of cornstarch?
A. 1
5
В.
C 1
D. 5
Answers
The number of teaspoons of white vinegar are there for every tablespoon of cornstarch is 0.4.
What is the unitary method?The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
Given that, for every 2 teaspoons of white vinegar in a jar of homemade glue, there are 5 tablespoons of cornstarch.
The number of teaspoons of white vinegar are there for every tablespoon of cornstarch = 2/5
= 0.4
Therefore, the number of teaspoons of white vinegar are there for every tablespoon of cornstarch is 0.4.
To learn more about the unitary method visit:
brainly.com/question/22056199.
#SPJ6
2/3 of a cake is divided between 6 friends. How much do they each get?
Answers
Answer:
4
Step-by-step explanation:
2/3 x6/1
Answer:
[tex]\frac{1}{9}[/tex]
Step-by-step explanation:
[tex]\frac{2}{3}[/tex] ÷ [tex]\frac{6}{1}[/tex] = [tex]\frac{2}{3}[/tex] × [tex]\frac{1}{6}[/tex]
To change the ÷ sign to a × sign, swap the denominators and numerators of the second fraction.
[tex]\frac{2}{3}[/tex] × [tex]\frac{1}{6}[/tex] = [tex]\frac{2}{18}[/tex]
Directly multiply. Numerators with numerators and denominators with denominators.
[tex]\frac{2}{18}[/tex] = [tex]\frac{1}{9}[/tex]
Divide the fraction by 2 to simplify it.
Which set of ordered pairs does not represent a function? O {(-3,-9), (7,9), (9, 1), (7,3)} O {(-3,8),(-6,5), (-5, -6), (1,-6)} O {(3,1),(-2,-9), (6,-9),(4,6)} o {(4,3), (-4,4),(-2,-5), (6,4)}
Answers
Answer:
The first set of ordered pairs is not a function.
Step-by-step explanation:
The X value of 7 repeats, which means that it is not a function
This is because each x value has to has their distinct y value. So you notice all sets of ordered pairs except the first one, two different x-values have the common y-value, which cannot be happen.
Select all the expressions that are equivalent to 9 + 7x – 3y.
Answers
Answer:
9 – (–7)x – 3y
Step-by-step explanation:
because - * - = +
so 9 – (–7)x – 3y = 9+7x -3y
What is the perimeter of a rectangle with a height of 4 units and a length of 21 units?
A 75 units
B 44 units
С 25 units
D 50 units
Answers
Answer:
С 25 units
Step-by-step explanation:
hope this help
pick me as the brainliest
Answer:D
Step-by-step explanation:
How many Rubles are 40 cents? I will give Brainliest to the correct answer
Answers
Answer:
30.34
Step-by-step explanation:
Answer:
40 cents = 30.34 rubles
Step-by-step explanation:
1 us $ is 75.86 RUB ₽
0.40 * 75.86 = 30.34
Write the fraction as a decimal
4 -8
11
4 , and 8 over 11
Answers
Answer: 52
Step-by-step explanation:
11×4=44+8=52
Answer:
I'm pretty sure its 4.727
I need help finding witch one is right
Answers
Answer:
I believe it's B!
Step-by-step explanation:
y=mx+b
y intercept is b
slope is m
y intercept is positive 5
slope is down 2 to the right 3
y= -2/3x+5
Answer:
The answer is B.
Step-by-step explanation:
In a slope form equation, y = mx + b where m represents gradient and b is y-intecept. In the graph above, the line shows a negative gradient and the y-intercept is 5. So the possible option is B.
16 liters to quarts (dry measure)
Answers
Answer:
16 litres =14.53 US qt dryStep-by-step explanation:
Please mark my answer as a brainliest. ❤❤❤Will give brainliest
Answers
Answer:
B
Step-by-step explanation:
I just know it.
PLS HELP MY GRADE DEPENDS ON IT
Image is attached below
Answers
Answer: the first one
Step-by-step explanation: head math
At the first game of the Major League Baseball season, a statistician keeps track of every pitch that a player throws during the game. The statistician reported that the mean pitch speed was 80 miles per hour (mph) and the standard deviation of the serve speeds was 10 mph. Assume that the statistician also gave us the information that the distribution of pitch speeds was mound- shaped and symmetric. What percentage of the player's serves were between 80 mph and 100 mph
Answers
Answer:
47.725%
Step-by-step explanation:
We solve using z score formula
z = (x-μ)/σ, where
x is the raw score
μ is the population mean = 80 mph
σ is the population standard deviation = 10 mph
For x = 80 mph
z = 80 - 80/10
z =0
Probability value from Z-Table:
P(x = 80) = 0.5
For x = 100 mph
z = 100 - 80/10
z = 2
Probability value from Z-Table:
P(x = 100) = 0.97725
Probability of the player's serves thay were between 80 mph and 100 mph is calculated as:
P(x = 100mph) - P(x = 80 mph)
= 0.97725 - 0.5
= 0.47725
The percentage of the player's serves that were between 80 mph and 100 mph is calculated as:
Converting to percentage:
0.47725 × 100 = 47.725%
Solve using substitution.
- x - y = -1
X = 2
Answers
Add 2
-y = 1
Y = -1
Answer:
x = 2
y = -1
Step-by-step explanation:
-(2) - y = -1
add 2
-y = 1
divide by -1
y = -1
Picture below................................
Answers
Answer:0.02 aka 2%
Step-by-step explanation:
2%
Step-by-step explanation:use formula below :
S.I=P×R×T/100
Make the unknown variable subject of the formula
100×S.I/P×T=Rate (R)
R=Rate
S.I =Simple interest
P=principal
T=Time
100×8/200×2=800/400=2%
The lengths of the sides of a triangle are 15 cm, 20 cm, and 30 cm. What are the sides of the lengths of a similar triangle tat has a perimeter of 26 cm?
Answers
Answer:
6 cm, 8 cm, 12cm
Step-by-step explanation:
4 1/3 Divided by 1/2
Answers
Explanation: Convert 4 1/3 which is 13/3
13/3 divided by 1/2
13/3 * 2
13/3 * 2= 26/3
estimate the quotients 123.8 divide by 62=
Answers
Answer:
Step-by-step explanation:
Determine if the graph of the quadratic equation opens up or down and is wider or narrower than the graph y=x?
y = -x? +2
Answers
Answer:
y = -x^2 +2
Step-by-step explanation:
? means like add something in. Like ^2 is what I added in.
https://brainly.com/question/20359398. This is what I learned after this chapter. (Concept.) You can learn about it and get ahead if they'll learn this.
15 people are expected for a dinner. Three ounces of corn serves one person. A can of corn is nine ounces. How many cans of corn should be bought for the dinner?
Answers
Answer:
5 cans need to be bought
Step-by-step explanation:
In each can, 3 people can be served. 3 × 5= 15
EMERGENCY PLEASE HELP! Which set of ordered pairs does not represent a function?
A. {(1,2), (7,8)}
B. {(-4,4),(-2,2),(-1, 1)}
C. {(1,1),(1,2)
D. {(-5,-4),(3,6)}
E. {(0,1),(1, 1), (2, 1)}
Answers
Answer:
c.
Step-by-step explanation:
The X value 1 is repeated
A mercury thermometer records a temperature of 10°F at 9 a.m. If the temperature drops by 3°F every hour, what will be the temperature by 2 p.m.?
Answers
Answer:
No
Step-by-step explanation: