Answer:
10
Step-by-step explanation:
all red cars were sports cars (30) half of the blue cars were sports cars (20) if 30 is half of all the sports cars, and 20 is 2/3 of half, then the 1/3 left is 10.
Helpppp I have 5 minutes left
The expression on the left side of an equation is shown below.
Negative 4 (x minus 2) + 5 x = box
If the equation has no solution, which expression can be written in the box on the other side of the equation?
2(x + 4) – x
x + 8
4(x + 2) – 5x
x
Answer:
The correct answer is B.) x + 8
Step-by-step explanation:
I just did the test on edge 2020 and got it right
Answer:
B: x + 8
Step-by-step explanation:
Of 1000 randomly selected cases of lung cancer, 838 resulted in death within 10 years. Construct a 95% two-sided confidence interval on the death rate from lung cancer. (a) Construct a 95% two-sided confidence interval on the death rate from lung cancer. Round your answers to 3 decimal places. (b) Using the point estimate of p obtained from the preliminary sample, what sample size is needed to be 95% confident that the error in estimating the true value of p is less than 0.03
Answer:
0.8152 ≤ p ≤ 0.8608
579
Step-by-step explanation:
Given the following :
Samples size n = 1000
Deaths within 10 years, p = 838
α = 95%
Construction a two way confidence interval:
p ± Zα/2 * √p(1-p) / n
point estimate p = 838/n = 838/1000 = 0.838
Z0.05/2 = Z0.025 = 1.96
0.838 - 1.96√0.838(1-0.838) / 1000
0.838 - 1.96*0.0116514 = 0.8152
0.838 + 1.96√0.838(1-0.838) / 1000
0.838 + 1.96*0.0116514 = 0.8608
0.8152 ≤ p ≤ 0.8608
b) Using the point estimate of p obtained from the preliminary sample, what sample size is needed to be 95% confident that the error in estimating the true value of p is less than 0.03
Error (E) = 0.03
To find the samome size, use the relation:
n = (Zα/2 / E)² * p(1-p)
n = (1.96/0.03)² * 0.838(1-0.838)
n = (1.96/0.03)² * 0.838 * 0.162
n = 4268.4444 * 0.838 * 0.162
n = 579.46
n = 579
The amount the price of an item is increased above the price the store paid for the item?
Answer:
Markup
Step-by-step explanation:
if the crab 5ft below sea level and the cliff is 3ft above the sea level what is the distance between them?
8ft is the dstance between them.
5+3 = 8
What is the effect on the graph of the function f(x) = x2 when f(x) is changed to f(1/3x) + 6?
A. Stretched horizontally and shifted up
B. Stretched vertically and shifted right
C. Compressed vertically and shifted left
D. Compressed horizontally and shifted down
Answer:
A but im not sure
Step-by-step explanation:
If It rained for 9.5 hours, how many inches of rain would have fallen?
Answer:
I believe the answer is 6.5 inches of rain
Step-by-step explanation:
6.33 (with 3 repeating forever) OR 6 [tex]\frac{1}{3}[/tex]
If it was 4 inches after 6 hours lets make an equation. h being the number of hours and i being the inches of rain.
[tex]\frac{4}{6}[/tex]xh = i
Now fill it in with what we know
[tex]\frac{4}{6}[/tex]x9.5 = i
Now solve it.
You get:
6.33 (with 3 repeating forever) OR 6 [tex]\frac{1}{3}[/tex]
Which is a member of the solution set of -5 < x ≤ -1?
Answer:
-1
Step-by-step explanation:
Put these two numbers on a number line with the correct circles. Now choose from any of the between numbers.
Tom drove 504 miles in 8 hours. At the same rate, how many miles would he drive in 12 hours
Answer:
756 miles in 12 hours
Step-by-step explanation:
504÷8=63
63 miles per hour
63×12=756
9514 1404 393
Answer:
756
Step-by-step explanation:
If you recognize that 12 (=8 +8/2) is half-again as much as 8, then you would know that Tom would drive half-again as much as 504 miles. That is, he would drive 504 +504/2 = 504+252 = 756 miles in 12 hours.
__
Since the rate is constant, you can write a proportion:
d/12 = 504/8 = distance/time
d = (12/8)(504) 1.5×504 = 756
Tom would drive 756 miles in 12 hours at that rate.
Can someone help me please I’ll mark brainliest !!
Answer:
56
Step-by-step explanation:
because a bisector splits in the middle, meaning that whatever the value is for the one side, it's the same on the other. So we multiply by 2.
A package in the shape of a rectangular prism has a length of 4 1/2 feet, a width of 2 3/4 feet, and a height of 2 1/3 feet.
What is the volume, in cubic feet, of the package?
Answer:
28.875
Step-by-step explanation:
you would just multiply the three together
How many solutions does this equation have?
7a+5(a+3) = 8a+4(a+2)
Answer:
There is no solution
Step-by-step explanation:
How would you write 2 × 2 × 2 using exponents?
Answer:
2³
Step-by-step explanation:
2×2×2...there are 3 2s which is 2³
Two times the reciprocal of a number equals 16 times the reciprocal of 20. Find the number. (1 point)
Let the number be x .
Reciprocal of x :-
[tex] = \frac{1}{x} [/tex]
An equation to find x :-
[tex]2 \times \frac{1}{x} = 16 \times \frac{1}{20} [/tex]
[tex] \frac{2}{x} = \frac{16}{20} [/tex]
[tex]16 \times x = 20 \times 2[/tex]
[tex]16x = 40[/tex]
[tex]x = \frac{16}{40} [/tex]
[tex]x = \frac{4}{10} [/tex]
[tex]x= \frac{4 \div 2}{10 \div 2} [/tex]
[tex]x = \frac{2}{5} [/tex]
Reciprocal of x :-
[tex] = \frac{5}{2} [/tex]
Which means the number :-
[tex] = \frac{5}{2} [/tex]
We can check it by :-
[tex]2 \times \frac{2}{5} = \frac{16}{20} [/tex]
[tex] \frac{4}{5} = \frac{16}{20} [/tex]
[tex] \frac{4}{5} = \frac{16 \div 4}{20 \div 4} [/tex]
[tex] \frac{4}{5} = \frac{4}{5} [/tex]
LHS = RHS
Which means we have found the correct number .
Therefore , the value of the number , whose reciprocal multiplied by 2 gives 16 times the reciprocal of 20 is :-
[tex] = \frac{5}{2} [/tex]7 days left until launch of products with $668 left in budget. Need to spend $85 on last day. How many dollars do we spend on remaining days?
Answer:
In total, you have $668.00.
To reserve enough for the last day, you need to subtract the last day's budget:
This means that, for the remaining 6 days in the week, you have $583.00.
Assuming an equal amount is being spent each day, you can calculate the daily budget by dividing the remaining total by the number of days left.
To avoid going over budget, you can spend $97.16 per day for the other six days.
Hope this helps!
Step-by-step explanation:
This is a lot of questions AND WHOEVER ANSWERES THESE BY THURSDAY 10/22/2020 WILL BE HONORED BY ME. I WILL MARK THE BRANLIEST.
1. What’s a better buy? 16 ounces of crackers for $4.00 or 20 ounces of crackers for $5.00?
2. What’s a better buy? 3 bagels for $2.85 or 5 bagels for $4.00?
3. What's a better buy? 3 pounds of apples for $1.89 or 1 pound of apples for $.79?
4. What's a better buy? 80 marbles for $4.99 or 90 marbles for $5.99?
5.Which rate is better? Sam runs 10 miles in 1 and 1/9 of an hour. Rina runs 8 miles in 7/8 of an hour.
6. Which rate is better? Emily bikes 18 miles in 2 hours. Ella bikes 22 miles in 2.5 hours.
7.Which rate is better? Dan types 100 words in 5 minutes. Dora types 118 words in 6 minutes.
8.Which rate is better? Fran reads 60 pages in 2 hours. Fanny reads 100 pages in 3 hours.
9.Which rate is better? Mona earns $44.55 in 9 hours. Mina earns $51 in 12 hours.
10.Which rate is better? Todd scored 132 points in 12 games. Terry scored 81 points in 8 games.
I KNOW IT'S A LOT BUT IF YOU KNOW THE ANSWERS TO SOME, THEN PLEASE SAY SO. AGAIN, I WILL MARK BRAINLIEST!!
Answer:
1. both are the same
2. 20 ounces
3. 3 pounds
Step-by-step explanation:
The football team has a total of 20 jerseys there are 10 medium sized jerseys what percent of the jerseys are medium sized jerseys
Answer:
50% of the jerseys are medium
Answer:
50% of the jerseys are medium sized.
Step-by-step explanation:
20 is 100% and half of them are medium so half of 100 is 50%
If the two remote interior angles of a triangle measure 60 degrees and 38 degrees , what is the measure of the exterior angle.
Answer:x + y + z = 180
Step-by-step explanation:
HELP ME PLZZZZZZZZZZZZZZ
Answer: 1
Step-by-step explanation: HELP ME PLS TOO
Helppppppp plzzzzzzzzzxzxzmfyfdtidt
Answer:
y=7
Step-by-step explanation:
Distribute: 9y-4y-4=31
Add like terms: 5y-4=31
Isolate: 5y=35
Divide each side by 5: y=7
ANSWER: y=7
Hope this helps
If SSR=30 and SSE=20, determine SST, then compute the coefficient of determination, r2, and interpret its meaning. SST=nothing r2=nothing (Type an integer or a decimal. Do not round.) Interpret the meaning of r2. Choose the correct answer below. A. It means that 1−r2 of the variation in the dependent variable cannot be explained by the variation in the independent variable. B. It means that r2•100% of the variation in the dependent variable can be explained by the variation in the independent variable. C. It means that 1−r2•100% of the variation in the independent variable cannot be explained by the variation in the dependent variable. D. It means that r2 of the variation in the independent variable can be explained by the variation in the dependent variable.
Answer:
R² value implies that 60% of the variation in the dependent variable can be explained by the variation in the independent variable.
Step-by-step explanation:
The information provided is:
SSR = 30
SSE = 20
Compute the total sum of squares as follows:
SST = SSR + SSE
= 30 + 20
= 50
The coefficient of determination R² specifies the percentage of the variance in the dependent-variable (Y) that is forecasted or explained by linear regression and the forecaster variable (X, also recognized as the independent-variable).
The coefficient of determination R² can be computed as follows:
[tex]R^{2}=\frac{SSR}{SST}[/tex]
[tex]=\frac{30}{50}\\\\=0.60[/tex]
The coefficient of determination value is 0.60 or 60%.
This value implies that 60% of the variation in the dependent variable can be explained by the variation in the independent variable.
hello I need help on it
I need help ASAP because this has to be turned in tomorrow
Answer:
You should look for this assignment quizlet. quizlet has pretty much every assignment!
Step-by-step explanation:
Go online, go to the search bar, type quizlet.com, look for assignment. boom. answers.
The square below represents one whole.
What percent is represented by the shaded area?
No. of total boxes=100
No. of total shaded boxes=85
percentage of the shaded area=85/100×100=85%
a drawer contained 49 pencils and erasers. William removed p pencils from the drawer. the remaining pencils and erasers were in the ratio of 2:5. write an algebraic expression for the number of pencils left in the drawer.
Answer:
hey
Step-by-step explanation:
A dog-washing salon is filling up the tub to was a dog. When the employee got to the tub,
there were already 2 gallons of water in the tub. She will fill the tub at a rate of 3 gallons a
minute.
Answer:
If there was 2 gallons in the tub at the moment, it must mean that it has been 2/3 of a minute or 40 seconds.
The two rates would be 3:60 and 2:40 and so on 1:20
Step-by-step explanation:
Good luck! Hope this helps! <3
At first Davian has $120 less than Jeremy.
Jeremy then spends half his money and Davian spends
none.
Davian now has $20 more than Jeremy.
Directions:
1) Assume that Jeremy originally has J dollars.
2) Fill in the algebraic expressions in the table below using
the variable J.
3) Solve the equation to get number of dollars Jeremy had
originally, and fill it into the entry in the last row.
English
Algebraic Expression
Correct?
Number of dollars
Jeremy has at first
Х
Number of dollars Davian
has at first
Х
Number of dollars
Jeremy has after
spending half his money
the equation
xx x
Number dollars Jeremy
had originally (as a
number)
Answer: YOU SHOULD DIVIDE ALL OF THEM TO GET YOUR ANSWER
is 3/4 less than,greater than,or equal to -1/2 ?
Answer: Greater than
3/4 greater than -1/2
3/4 > -1/2
Any positive number is always larger than any negative number
On a number line, stuff on the right side is always larger than stuff on the left side.
Answer:
it"s greater then
Plllzzzz illl give a brainliest plz help
Answer:
d.
Step-by-step explanation:
10^-2 = .01
times 6= .06 and 60%= .6
Answer:
3rd one or 36 i dont have that symbol-
Step-by-step explanation:
well 2/3 is 66 percent, 6.5 is 650% 6x10 2 is 600 and so its the third circle or answer
What is the slope-intercept form of 3x + 5y = -15?
3x+5y=1 in slope-intercept form is y=−35x+15 .
The recipe for 1 pie calls for 2 cups of flour. Which statement is true?
A 12 cups of flour are needed for 6 pies.
B. O 8 cups of flour are needed for 4 pies.
C.
1 cup of flour are needed for 2 pies.
D.
9
cups of flour are needed for 8 pies.
Hi!
Lets use a ratio. the recipe calls for 2 cups, for every pie, which is one pie.
So the ratio is 2:1
Now, lets look at the possible answers.
A, has the ratio 12:6. We need to use the ratio 2:1 to make sure this is correct. 2 x 6 = 12, and 12 ÷ 6 = 2, so A is a possibility.
B, has the ratio 8:4. Again, we check with the first ratio 2:1. 2 x 8 = 16, and 16 ÷ 4 = 4, so because the first equation did NOT equal 4, B is not a possibility.
C, has the ratio of 1:2. Because its TWO cups for ONE pie, it wouldn't be correct, so C is not a possibility as well.
D, has the ratio of 9:8. Again, we need to check if its correct using the original ratio of 2:1. 2 x 9 = 18, and 18 ÷ 2 = 2. The ratios do not match, therefore D is not a possibility at all as well.
So, Your Answer Is: A, 12 cups of flour are needed for 6 pies. Also know as the ratio, 12:6
(Here's a tip. When using ratios, use the original ratio to help you out. If when you multiply it doesn't equal the 2nd ratio (as in, 0:6 ⇇⇇ that one right there), and then you divide and it equals the first ratio (as in, this one right here ⇉⇉0:6), it still incorrect.... if all of that made sense)
Hope this helps!
~~~PicklePoppers~~~