Answer:
14a -2
Step-by-step explanation:
3(4a + 6) + 2(a – 10)
Distribute
12a+18 +2a -20
Combine like terms
12a+2a +18 -20
14a -2
Answer:
14a-2
Step-by-step explanation:
12a+18+2a-20
Using the following data set calculate the mean 9,14,14,9,20,6,8,19,17,13,9
Answer:
12.54
Step-by-step explanation:
When finding the mean, first you add all the numbers in the data:
9+14+14+9+20+6+8+19+17+13+9=138
And then you divide it by the following numbers in the set. In this data set, since there are 11 numbers, you would divide 138 by 11.
138\11=12.5454545
So the answer would be 12.54 if your rounding to the nearest hundred. If your rounding it by a whole number, it would be 13.
The temperature outside is 10°F. By evening, the temperature has dropped by 15°F. What is the new temperature?
If a product of three numbers is 3150, two of the numbers are 14,15. Find the third number
Answer:
15
proof on pic......................
Use the distributive property to simplify the expression 7 (8x+3).
7(8X+3=
Answer:
56x+21
Step-by-step explanation:
7times 8x is 56x
7 times 3 is 21
add them together and you get 56x+21
What is the distance between the points (4, 9) and (4, 2)? A) 2 B) 5 C) 7 D) 8
Answer:
The answer is 7
Step-by-step explanation:
I took the test and failed it cuz I put 5. Don't listen to that other dude. So I know what I'm talking about. Just listen to me and you won't fail.
Which of the following rules best describes the matrix below
a. dilation of scale factor 2
b. reflection over the y-axis
c. reflection over the line y = x
d. translation 1 unit left and 1 unit up
Answer: D
Step-by-step explanation:
d. translation 1 unit left & 1 unit up
right on edg
plz help will give crown
Answer:
x=8
Step-by-step explanation:
-2(8) would be -16 so -18 is still greater
Answer:
B
Step-by-step explanation:
all the others will have a value of more than -18. Only B makes sense.
Hope this helps! Have a great day
A sequence can be generated by using an=12an−1, where n is a whole number greater than or equal to 1.
Given a9=12, what is a10?
5
6
13
24
Answer:
8, 11, 14, 17
Step-by-step explanation:
For example,
Given: an=2an−1−xan=2an−1−x
a5=99a5=99
a3=27a3=27
a5=2a4−x=2(2a3−x)−x=4a3−3x=99a5=2a4−x=2(2a3−x)−x=4a3−3x=99
4(27)−3x=994(27)−3x=993x=108−99=93x=108−99=9
x=3x=3
if virginia's sales tax rate is 4.3%, what is the total cost of a $34 virgina tech t-shirt?
Answer:
35.46
Step-by-step explanation:
34 x 1.043=35.46
HELP PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
78
Step-by-step explanation:
Arc GHJ is 81*2= 162 (the arc measure of an inscribed angle that does not cross the center of the circle is 2 times the measure of the angle
since arc GH is 84 and we need HJ, subtract 84 from 162=78
Which value of x will make these ratios equivalent
24/42=4/x
A.19
B.15
C.7
D.5
thomas has 12 more marbles than twice the number of marbles Andrew has.
Andrew has x marbles. which expression represents how many marbles thomas has?
A. x + 2 + 12
B.x+12(2)
C.2x+12
D.2(x+12)
Answer:
A.
x + 2 + 12
Step-by-step explanation:
Thomas (t) = Andrew (x) * 2 + 12
Find an ordered pair (x,y) that is a solution to the equation.
5x+y=6
Answer:
(0,6) and (1.2 , 0)
Step-by-step explanation:
5x + y = 6
if we take x=0
5(0) + y = 6
y = 6 ; so, one of the solution is (0,6)
if we take y=0
5x + (0) = 6
5x = 6
x = 6/5 = 1.2 ; so, the other solution is (1.2 , 0)
But basically, you can find other solutions of the equation if you do this:
5x + y = 6
5x = (6 - y)
x = (6 - y) / 5 ; so if you use whatever number of y, you will find the rigth solution for x.
and you can do the opposite too:
5x + y = 6
y = 6 -5x ; with this, you can use whatever number of x, and find the right y.
I hope this helps you!!!
Robin can clean 727272 rooms in 666 days.
How many rooms can Robin clean in 999 days?
rooms
Answer:
1090908 rooms
Step-by-step explanation:
calculator
Answer:
Robin can clean 9828 rooms in 9 days
Step-by-step explanation:
Since Robin can clean 727272 rooms in 666 days, we can find how many rooms she can clean in 1 day by dividing 727272 by 666
number of rooms cleaned by Robin in 1 day = 727272 rooms/666 days = 1092 rooms/day
We can then find how many rooms she can clean in 9 days by multiplying 1092 by 9
1092 rooms/day * 9 days = 9829 rooms
-0.5
0
1
-2
1.5
Where is Point D on the number line?
?
Answer:
Its -1.9 for where point D is
At the beginning of the week, the temperature was 15. During the week, it decreased by 20. What was the temperature by the end of the week? What is the percent Change of the weekly temperature? Show work
Answer:
Initial temperature = 15Decrease during the week = 20Temperature by the end of the week:
15 - 20 = -5Change is 20
Percent change is:
20/15*100% = 133.33%In a study of the relationship between pet ownership and physical activity in older adults, 586 subjects reported that they owned a pet, while 1931 reported that they did not. Give a 98% confidence interval for the proportion of older adults in this population who are pet owners. Lower limit Incorrect: Your answer is incorrect. Upper limit
Answer:
Step-by-step explanation:
In a study of the relationship between pet ownership and physical activity in older adults, 586 subjects reported that they owned a pet, while 1931 reported that they did not. Give a 98% confidence interval for the proportion of older adults in this population who are pet owners. Lower limit Incorrect: Your answer is incorrect. Upper limit
p ± z × (1 - p/n)
z = 98%
p = 586/1931
= 0.3034697048
n = 1931
Approximately = 0.3035
Confidence interval =
0.3035 + 2.326 × ( 1 - 0.3035/ 1931)
A bike store sells scooters at a 54% markup. If the store bought each scooter for $29.25, what is the resale price to the nearest dollar? Show your work
9514 1404 393
Answer:
$45
Step-by-step explanation:
The relation is ...
resale price = cost + markup
= cost + 0.54×cost
= 1.54×cost
Then the resale price is ...
resale price = 1.54×29.25 = 45.045 ≈ 45.00
The resale price is $45.00.
10. What is the measure of ZP?*
E
(15m + 17)º
-Q
(4m – 10)
P
(7m - 9)
Answer:
m∡P = 40°
Step-by-step explanation:
15m + 17 + 4m - 10 + 7m - 9 = 180
26m - 2 = 180
26m = 182
m = 7
∡P = 7(7) - 9 = 49 - 9 = 40
When you buy something with a credit card, which one of the following will usually save you money over the long run? A. Paying the entire amount owed each month B. Paying a small portion of the amount owed over a longer period of time C. Paying a small portion of the amount owed each month D. Paying the entire amount owed, but only every other month
Answer:
A. Paying the entire amount owed each month
Step-by-step explanation:
When we buy something with a credit card option C usually save you money over the long run.
What is credit card?A credit card represents a payment mechanism which facilitates both consumer and commercial business transactions, including purchases and cash advances. A credit card generally operates as a substitute for cash or a check and most often provides an unsecured revolving line of credit.
A. Paying the entire amount owed each month
This option is better when you don't have money and you have to manage it.
B. Paying a small portion of the amount owed over a longer period of time.
this option is not applicable
C. Paying a small portion of the amount owed each month.
This option gives more money savings if there is no interest.
D. Paying the entire amount owed, but only every other month.
This is also a money saving if there is no interest.
Thus when we buy something with a credit card option C usually save you money over the long run.
To know more about credit card click here
https://brainly.com/question/3685635
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the real zeros of √(x-1)+x+1
The product of 3m and 5r is 15mr True or False Explain...
Step-by-step explanation:
let's see....
3m × 5r = 15mr
15(m × r)
15mr.
if it helps don't forget to like and mark me down
The length of a rectangle is 3 yards less than 5 times the width. If the perimeter is 102 yards, find the length and the width of the rectangle.
Answer:
Width = 9 yards, length = 42 yards
Step-by-step explanation:
Perimeter = 2xlength + 2xwidth. Let's call length L and width W. The question also states that L = 5W-3. Therefore, 102 = 2x (5W-3) + 2W. Then, 102 = 12W - 6. 108 = 12W, so W = 9 yards. Since L = 5W - 3, we get 45-3 = 42 yards.
Which represents the polynomial written in standard form
Answer:
The answer is the third option
Step-by-step explanation:
HURRY PLS 7TH GRADE MATH I NEED HELP I HAVE LESS THAN 5 MINS TO DO THIS
Answer:
35 = 8 + x + x + x + x + x +x
35 = 8 + 6x
6x + 8 = 35
35 - 8 = 6x
Step-by-step explanation:
hope this helps:)
Plastic parts manufactured using an injection molding process may exhibit one or more defects, including sinks, scratches, black spots, and son on. Let x represent the number of defects on a single part, and suppose the distribution of x is as follows: x: 0 1 2 3 4 p(x): 0.79 0.09 0.05 0.04 0.03 What is the expected value, E(X), for the number of defects on a randomly selected plastic part
Answer:
The expected value for the number of defects on a randomly selected plastic part is 0.43.
Step-by-step explanation:
We have the following probability distribution:
P(X = 0) = 0.79
P(X = 1) = 0.09
P(X = 2) = 0.05
P(X = 3) = 0.04
P(X = 4) = 0.03
What is the expected value, E(X), for the number of defects on a randomly selected plastic part?
Each value multiplied by its probability. So
[tex]E(X) = 0.79*0 + 0.09*1 + 0.05*2 + 0.04*3 + 0.03*4 = 0.43[/tex]
The expected value for the number of defects on a randomly selected plastic part is 0.43.
21.79 + x = 25
make sure to do a explanation
Answer:
x= 3.21
Step-by-step explanation:
25- 21.79= 3.21
the equation equals to 25 so you need to find what x is by subtracting the other value
Hope this helps
65+ ? -15=65 Find missing number
Answer:
65 + 15 - 15 =65
Step-by-step explanation:
pls give brainlist if this was helpful ^^
A car can travel at least 70 miles per hour faster than 4 times the speed of someone walking. Which inequality represents the relationship between the speed of the person walking, m, and the speed of the car, v?
A. v ≥ 560m
B. v ≥ 4 + 70m
C. v ≥ 4m - 70
D. v ≥ 4m + 70
Answer:
D
Step-by-step explanation:
plz tell me if correct!
and PLZ GIVE BRAINLIEST
4
Select the correct answer
Erin is taking part in a play at the community theater. The cast and crew ordered T-shirts for all the volunteers. The cost of a T-shirt is $8, and the
total delivery charge is $45 per order. If the center has no more than $325 to buy T-shirts, how many T-shirts can they buy?
Answer:
The answer is B
Step-by-step explanation: