Answer:
18 hope this makes sense
Step-by-step explanation:
2 and exponent =4 bc exponents make it multiply the same number again how ever many times is there. so it's
4 x 5 - (4 - 2)
4 x 5 - 2
20 - 2 = 18
Answer:
18
Step-by-step explanation:
Do parenthesis and get 2, then 4 x 5=20 then 20 -2= 18.
Help me I’ll mark you brainly!
Answer:
- 6x² -x⁴/6 -1 because 6x² is co effectient
A copper wire has a mass of 9.09grams and a volume of 1.01cubic centimeters. Calculate its density.
Write your answer to the hundredths place.
Answer: The density of copper should be the same in a wire as it is in a chunk,
so the answer is 8.9 g/cm3.
Find the value of each trigonometric ratio.
Answer: C
Step-by-step explanation:
u have insta
Answer:
sine = opposite / hypotenuse
sine C = 8 / 15
sine C = .53333333333333
Step-by-step explanation:
Which expression is equivalent to the expression shown?
2
4 x4
48
166
46
PLZ ANSWER I WILL GIVE BRAINLIST
Answer:
5^8 .. you have to do it like this 5^(2×4)
I need help please!!!!!!!!!!!!!!!!!!!
Answer:
A sand dune stands 5 feet above sea level. The hill is eroding at a rate of 1 foot per 20 years. Let y represent the height of the sand dune after x years. Which equation represents the situation?
y = negative StartFraction 1 Over 20 EndFraction x minus 5
y = negative StartFraction 1 Over 20 EndFraction x + 5
y = negative 20 x minus 5
y = negative 20 x + 5
Step-by-step explanation:
help me please help me ..
Answer:
26 is the correct answer.
Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and prepreview ads before the movie starts. Many complain that the time devoted to previews is too long. A preliminary sample conducted by The Wall Street Journal showed that the standard deviation of the amount of time devoted to previews was five minutes. Use that as a planning value for the standard deviation in answering the following questions.a. If we want to estimate the population mean time for previews at movie theaters with a margin of error of 78 seconds, what sample size should be used
Answer:
57
Step-by-step explanation:
Given that :
Standard deviation (σ) = 5 minutes = (5 *60) = 300 seconds
Margin of Error, E = 78
Assume a confidence interval of 95%;
Using the relation :
((Zα/2 * σ) / E)²
(1 - α)/2 = (1 - 0.95)/2 = 0.05 /2 = 0.025
Z0.025 = 1.96
Sample size = ((1.96 * 300) / 78)²
Sample size = (588 / 78)^2
Sample size = 7.5384615^2
Sample size = 56.828
= 57 samples
GIVING BRAINLIST TO WHOEVER ANSWERS
A baker uses chocolate with 75% cocoa for his famous cake. But the supplier delivered 100 lb of chocolate with 70% cocoa. The baker needs to melt and mix the delivery with chocolate that has 90% cocoa. How much of the 90% chocolate should he use.
Answer:
33 1/3 pound of cocoa
Step-by-step explanation:
;)
Find the value of X in the triangle shown.
Solve the system of equations.
13r - 6y = 22
2 = y + 6
Answer:
The answer is just r = -2/13
The population of California is approximately 38,040,000. The population of Texas is about 2.606 × 107. What is the approximate total population of these two states?
Answer:
Step-by-step explanation:
California population 3.804 x10^7
texas population 2.606x 10^7
total= 6.4 x10^7
Answer:
c
Step-by-step explanation:
What is the product of (5.9 x 10^3) and (5.9 x 10^4) expressed in scientific notation?
please help
Answer: 3.481 x 10^8
:)
Step-by-step explanation:
(5.9 x 10^3)(5.9 x 10^4)
(5.9 x 5.9) (10^3 x 10^4)
34.81 x 10^7
= 3.481 x 10^8
The amount of time needed for a certain machine to process a job is a random variable with mean EXi = 10 minutes and Var(Xi)=2 minutes2. The times needed for different jobs are independent from each other. Find the probability that the machine processes less than or equal to 40jobs in 7hours.
Answer:
0.98732
Step-by-step explanation:
Given that :
Mean = 10 minutes
Variance = 2 minutes
For less than equal 40 jobs
Mean (m) = 40 * 10 = 400 minutes
Variance = 2 * 40 = 80 minutes
Standard deviation (s) = √variance = √80
Converting hours to minutes
X = 60 * 7 = 420 minutes
P(X≤ 420) :
Z = (x - m) / s
P(X≤ 420) :
Z = (420 - 400) / √80
Z = 20 / √80 = 20 / 8.9442 = 2.236
P(Z ≤ 2.236) = 0.98732
The probability that the machine processes less than or equal should be 0.98732
Calculation of the probability:
Since
Mean = 10 minutes
Variance = 2 minutes
For less than equal 40 jobs
Mean (m) = 40 ( 10) = 400 minutes
Variance = 2 (40) = 80 minutes
Now
Standard deviation (s) = √variance = √80
Now here we Converting hours to minutes
So,
X = 60 (7) = 420 minutes
Now
P(X≤ 420) :
Z = (x - m) / s
Z = (420 - 400) / √80
Z = 20 / √80
= 20 / 8.9442
= 2.236
Now finally
P(Z ≤ 2.236)
= 0.98732
Hence, The probability that the machine processes less than or equal should be 0.98732
Learn more about probability here: https://brainly.com/question/3066522
The brown family might plant 1/8 tomatoes, 1/8 cabbage, and 1/8 peppers. If they do, what fraction of their garden will be unplanted?
the sum of allmultiples of 6 between 10 & 87 is equal to
The sum of all multiples of 6 between 12 and 87 is equal to 624.
How to get the sum?
The multiples of 6 are of the form: 6*n
Where n is an integer.
The multiples between 10 and 87 are:
6*2 = 12
6*3 = 13
...
6*14 = 84
Then the sum of all these multiples can be written as:
[tex]6*2 + 6*3 + 6*4 + ... + 6*14\\\\= 6*(2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 + 13 + 14) = 624[/tex]
The sum of all multiples of 6 between 12 and 87 is equal to 624.
If you want to learn more about multiples:
https://brainly.com/question/251701
#SPJ1
Oceanside Bike Rental Shop charges a 15 dollar fixed fee plus 9 dollars an hour for renting a bike. Dan paid 69 dollars to rent a bike. Which equation when solved would show how many hours the bike was rentented? Let h = hours
Answer:
Step-by-step explanation:
Dan paid 69 divided by 9 = H - 15
A company loses 345,000 in 2011
Answer:
they lose 20,000,000 in 2021 how much of a difrence is this
Step-by-step explanation:
How many ways are there to choose five doughnuts if there are eight varieties (and only the type of each doughnut matters)?
Answer:
There are 56 ways to choose 5 from 8 varieties.
Step-by-step explanation:
a) Choosing 5 out of 8
This is a combination problem, given by the formula below:
C(n,r)=?
C(n,r)=C(8,5)
=8!/(5!(8−5)!)
= 56
b) A combination is the number of ways to choose a sample of r elements from a set of n distinct objects where order does not matter and replacements are not allowed. The result of this combination of 5 out of 8 varieties shows that there 56 ways one can choose. The formula is given by 8 factorial divided by (5 factorial by 3 factorial).
Helpp picture about will mark
Answer:
36
Step-by-step explanation:
3*2=6
6^2 is 36
angie needs to buy 156 candlesbfor a party. each package has 8 candles. how many packages should Angie buy?
20 packages
Step-by-step explanation:
Divide 156 by 8 and you get 19.5. Angie needs 156 candles, so you round 19.5 to 20.
which is true when x-3<2
Hey there!
“x – 3 < 2”
Let’s change your current question into a(n) equation to make it EASIER to solve (this is for temporary purposes ONLY)
• Temporary question
x – 3 = 2
• First: ADD BOTH SIDES by 3
x – 3 + 3 = 2 + 3
• CANCEL: –3 + 3 because that gives you 0
• KEEP: 2 + 3 because that helps solve for x
• New temporary question: 2 + 3 = x
2 + 3 = 5
The temporary question answer is: x = 5 ✅
NOW LETS SOLVE FOR YOUR ACTUAL EQUATION (just saying it REQUIRES the SAME steps as the temporary question just a TAD bit differently!)
x – 3 < 2
• FIRST: ADD both SIDES BY 3
x – 3 + 3 < 2 + 3
• CANCEL: –3 + 3 because that gives you 0
• KEEP: 2 + 3 because that helps us compare the answer with x
• New equation: x < 2 + 3
2 + 3 = 5
x < 5
Answer to your given question is: x < 5 ☑️
Good luck on your assignment and enjoy your day!
~LoveYourselfFirst:)
please give answers asap!! correct answers only
Answer:
15 units
Step-by-step explanation:
UW is the midsegment of ΔVXY,
By midsegment theorem of a triangle,
"Segment joining the midpoints of two sides of a triangle is parallel to the third side and measure of midsegment is half of the length of the third side."
UW = [tex]\frac{1}{2}(XY)[/tex]
Since, XY = 30 units
UW = [tex]\frac{1}{2}(30)[/tex]
= 15 units
Therefore, length of the midsegment UW = 15 units will be the answer.
Veronica's Violin Village sold 400 violins in the month of July. In the month of August they decreased
their sales by 84 violins. By what percent did they decrease their monthly sales of violins from July to
August?
Answer:
21% is the answer :)
A water well drilling rig has dug to a height of -15 feet in three hours. If the rig has been running constantly and is currently at a height of -192.5 feet, for how long has the rig been running?
22.25 hours
97.4 hours
38.5 hours
12.8 hours
Sarah bought 4 pens for $1.00. How many did she pay for each pen?
Answer:
Sarah paid 25 cents for each individual pen
Step-by-step explanation:
Answer:
she paid .25 cents for each
Step-by-step explanation:
1.00÷4=.25
7. The ratio of strawberries to grapes in the fruit salad is 3:9. The ratios of strawberries to honeydew is 6:14. If there 36 grapes, how peony strawberries. Match the fractions that are equivalent to each other
Answer:
12 strawberries
Step-by-step explanation:
Let
[tex]S = Strawberry[/tex]
[tex]G = Grape[/tex]
[tex]H = honeydew[/tex]
Given
[tex]S : G = 3 : 9[/tex]
S : H = 6 : 14
Required
Solve for S when G = 36
To do this, we make use of the first ratio
[tex]S : G = 3 : 9[/tex]
Substitute 36 for G
[tex]S : 36 = 3 : 9[/tex]
Convert ratio to fractions
[tex]\frac{S}{36} = \frac{3}{9}[/tex]
[tex]\frac{S}{36} = \frac{1}{3}[/tex]
Cross Multiply
[tex]S * 3 = 36 * 1[/tex]
[tex]3S = 36[/tex]
Divide through by 3
[tex]\frac{3S}{3} = \frac{36}{3}[/tex]
[tex]S = \frac{36}{3}[/tex]
[tex]S = 12[/tex]
The (b) part of the question can not be solved with the given details.
However, some equivalent fractions are:
[tex]\frac{1}{2} = \frac{2}{4}[/tex] ---- 0.5
[tex]\frac{5}{15} = \frac{10}{30}[/tex] --- 0.33
[tex]\frac{4}{7} = \frac{8}{14}[/tex] --- 0.57
To get the equivalent fractions, you have to convert the fractions to decimal and then make comparison.
BE FAST IM TIMED
An education researcher is interested in comparing the learning outcomes of students who are taught a lesson using five different teaching techniques. There are 75 students in the school who can participate in the experiment. Using a table of random digits, the researcher will randomly place the students into five equally sized treatment groups suitable for comparison.
Which number range would be needed to label the students correctly?
A 0–4
B 1–5
C 00–75
D 01–75
Answer:
D
Step-by-step explanation:
Answer:hope it helped
Step-by-step explanation:
c answer
Help please will brain list
Answer. All the correct statements are:-
B. -8.7 is further to the left on the number line than -8.4
C. -8.7 is less than -8.4
F. -8.4 is greater than -8.7
Answer:
Step-by-step explanation:
express 4,085 in scientific notation
Answer:
4.085 x 10^3
Step-by-step explanation:
just use powers to figure out these questions. it always starts from a single digit! for example if the number is 4,000 it would just be 4 x 10^3 but because theres more unique numbers then it would be a decimal