Answer:
f(3) = 30Step-by-step explanation:
f(x) = 4x² - 6
To find f(3) substitute the value of x that's 3 into f (x) that is for every x in f (x) replace it with 3
We have
f(3) = 4(3)² - 6
= 4(9) - 6
= 36 - 6
We have the final answer as
f(3) = 30Hope this helps you
Answer: f(3) = 30
Step-by-step explanation:
A contractor is tiling the bottom of a round fish pond with 1-inch square tiles that cost $0.12 each. the fishpond has a diameter of 30 inches. how much will he spend on tiles?
Answer:
about $3.60
Step-by-step explanation:
Because it's a round pond and the tiles are square they might be cut a little but the main point of the question would be the 12 cents PER tile. Per is the one of the words to show multiplication. So you multiply .12 x 30 to get 3.6 and since this is money it would be $3.60
Hope that helps and have a great day!
Answer: $84.78
Step-by-step explanation:
If the bottom of the fish pond is round which means it has to be a circle, and to find the space that needs to be covered,you need to find the area of the bottom of the pond.
So it has a diameter of 30 and to find the area you need to find the radius,square it and multiply it by pi.
The radius will be 15 because the radius is half the diameter.
A= 15^2 * 3.14 we will use 3.14 as an approximation for pi.
A= 225 * 3.14
A= 706.5
Now after you have find the area multiply it by the amount of money that each tile cost to fin the total amount of money you have to pay.
706.5 * 0.12= 84.78
So approximately you will spend $84.78 on tiles
What is the distance between (2,8) and (7,7)
Answer:
5.1 units
Step-by-step explanation:
Hey there!
To find the distance of points,
(2,8) and (7,7).
We need to use the Pythagorean Theurom formula which is,
[tex]a^2 + b^2 = c^2[/tex]
So we need to find the rise/run or a and b to find c or the distance.
x - 2 and 7, distance of 5 units
y - 8 and 7, distance of 1 unit.
Plug those numbers in.
[tex]5^2 + 1^2 = c^2[/tex]
25 + 1 = c^2
26 = c^2
c = 5.09901
c = 5.1 rounded to the nearest tenth.
Hope this helps :)
Here is how i did it
the ohio state fair charges $8 for admission and 5$ for parking. after joey pays for admission and parking he plans to spend all of his remaining money playing the ring game that costs $3 per game. write and equation to show how much money joey spends after paying x number of ring games.
Answer:13+3x=$
$=cost
Step-by-step explanation:
1. Add the starting money price (8$ and 5$)
2.Put x and 3 together.
Example:
13+(3 times 5 )------>13+15=28$
The cost would be 28$
Need some help on this question Select the polynomial that is divisible by (x-1).
Answer:
A
Step-by-step explanation:
p(x)=5x^3−4x^2−x
Match each number with the amount that represents 10% of that number
Answer:
.
Step-by-step explanation:
is each number correctly expressed in scientific notation? Choose yes or no
z=a/m, for a
Help pls
Literal equations indicate variable
Answer:
a = zm
Step-by-step explanation:
z = a/mMultiply both sides by m:
zm = am/mzm = aa = zm6x−3(6−5x)+3x=10−4(2−x)
Answer:
x =1
Step-by-step explanation:
[tex]6x-3\left(6-5x\right)+3x=10-4\left(2-x\right)\\\\Group\:like\terms\\6x+3x-3\left(-5x+6\right)=10-4\left(2-x\right)\\\\Add\:similar\:elements:\:6x+3x=9x\\9x-3\left(-5x+6\right)=10-4\left(2-x\right)\\\\Expand\:-3\left(-5x+6\right):\quad 15x-18\\9x+15x-18=10-4\left(2-x\right)\\\\\mathrm{Add\:similar\:elements:}\:9x+15x=24x\\24x-18=10-4\left(2-x\right)\\\\Expand\:10-4(2-x):4x+2\\24x-18=4x+2\\\\Add\:18\:to\:both\:sides\\24x-18+18=4x+2+18\\\\Simplify\\24x=4x+20\\[/tex]
[tex]\mathrm{Subtract\:}4x\mathrm{\:from\:both\:sides}\\24x-4x=4x+20-4x\\\\Simplify\\20x=20\\\\\mathrm{Divide\:both\:sides\:by\:}20\\\frac{20x}{20}=\frac{20}{20}\\\\Simplify\\x=1[/tex]
A light phone company advertises that its light bulb will last 100 hours. if 92% of the bulbs the company produces actually last that long. approximately how many light bulbs should be produced to have 15000 light bulbs meet the advertising claim?
Answer:
16,304
Step-by-step explanation:
We need to have a number that has 15,000 be 92% of it. To do this, divide 15,000 by 92% to find the total needed.
92% = 0.92
15,000/0.92 = 16,304.3 = 16,304
You will need 16,304 light bulbs.
A company should produce 16,304 bulbs to have 15,000 light bulbs meet the advertising claim.
The percentage formula:"For a number x, m% of number x is [tex]=x\times \frac{m}{100}[/tex] "
For given question,
Let 'n' represents the number of bulbs that should be produced to have 15000 light bulbs meet the advertising claim.
This means 92% of 'n' light bulbs should be 15000 light bulbs.
⇒ 15000 = n × (92/100)
⇒ 15000 = n × 0.92
⇒ n = (15000) / (0.92)
⇒ n = 16304.3
⇒ n ≈ 16304
Therefore, there should be 16304 light bulbs.
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On average, which country user's spend the most time on social media? Which country's users spend the least time?
Answer:
Israel top, canada bottom
Step-by-step explanation:
Don't worry, I have this question too :)
Answer:
On average, Israel's country's users spend the most time on social media. United States' country's users spend the least time.
Step-by-step explanation:
Using the given inputs, we will rewrite these as decimals.
The only fractions that are listed are:
United States - 7 3/5
Canada - 7 7/10
Russia - 10 2/5
Colombia - 8 1/2
To convert a fraction to a decimal, we have to divide the numerator to the denominator. Add this decimal number to the whole number part of the mixed number.
So now, we get:
United States - 7.60
Canada - 7.70
Russia - 10.40
Colombia - 8.50
To determine which ones are greater than the others, you add a 0 to the end of the decimal.
The number with the least value here is 7.6, and the number with the largest value is 10.4. So, Israel's country's users spend the most time on social media. United State's country's users spend the least time on social media.
Sarah is 9 years old. Sarah's grandfather is 90 year old. Sarah's grandfather is how many times as old as Sarah?
Answer:
10 times older
Step-by-step explanation:
name brainliest
Answer:
10 times
Step-by-step explanation:
Basically it is asking you this:
90/9 which is 90 divided by 9.
i need help please i would appreciate it
Answer:
5/1 × 1/3 = 5/3
Step-by-step explanation:
correct me if im mistaken,but im sure my answer is correct
Compare the three data sets on the right.
(a) Which data set has the greatest sample standard deviation?
Which data set has the least sample standard deviation?
(b) How are the data sets the same? How do they differ?
Answer:A just took the test and got a 100
a) The graph II will tell the greatest sample standard deviation.
and, the least sample standard deviation is given by Graph III.
b) The three data sets have same mean, median and mode but different
standard deviation.
what is Standard Deviation?The term "standard deviation" (or "[tex]\sigma[/tex]") refers to a measurement of the data's dispersion from the mean. A low standard deviation implies that the data are grouped around the mean, whereas a large standard deviation shows that the data are more dispersed.
Given:
From the Graph we can say the the dispersion of data from the mean tells about the Standard deviation.
Then, the graph II will tell the greatest sample standard deviation.
and, the least sample standard deviation is given by Graph III.
b) The data sets have same mean but different standard deviation.
So, The three data sets have same mean, median and mode but different
standard deviation.
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At a grocery store, almonds are on sale for $3.78 per pound. What is the price of 4.5 pounds? Please show explanation
Answer:
17.01 pounds
Step-by-step explanation:
3.78 x 4.5 = 17.01
Hope this helps!
simplify the expression 8(2x+y+z) 10 POINS PLEASE HELP
Answer:
16x+8y+8z
Step-by-step explanation:
Apply the distributive property.
8(2x+y+z)
Multiply 2 by 8.
16x+8y+8z
I did this once! Please Mark Me Brainliest!
Answer:
16x+8y+8z
Step-by-step explanation:
Pls help me I can’t figure it out T^T incase the picture doesn’t work it says 14. write a real-world problem thats can be represented by the equation 3/4c=21?
Answer:
________________
How many 3/4 cups of milk would be needed to make 21 cups of milk for a large recipe?
________________
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If f(x) = 5 + 4x^2, then f(3) =
Answer:
f(3) = 41Step-by-step explanation:
f(x) = 5 + 4x²
To find f(3) substitute the value of x that's 3 into f (x) which means for every x in f (x) replace it with 3
That's
f(3) = 5 + 4(3)²
= 5 + 4( 9)
= 5 + 36
We have the final answer as
f(3) = 41Hope this helps you
Step-by-step explanation:
F(3) = 5 + 4(3)^2
f (3) = 5 = 36
f(3) = 41
Hope i helped u
Solve the equation for the indicated variable. A=r+rvf, for v
Answera=frv+r
Step-by-step explanationa=r+rvf
To solve for a variable in an equation means that we change the subject of the formula. The solution to the equation for variable v is:
[tex]\frac{A - r}{rf} = v[/tex]
Given that:
[tex]A = r + rvf[/tex]
Subtract r from both sides
[tex]A - r = rvf[/tex]
Divide both sides by rf
[tex]\frac{A - r}{rf} = v[/tex]
Rewrite as:
[tex]v=\frac{A - r}{rf}[/tex]
Hence, the solution to the equation for variable v is:
[tex]\frac{A - r}{rf} = v[/tex]
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Which expression can be used to check the answer to 56÷(-14)=-4? A) -14×-4 B) -4÷(-14) C) 56×(-14) D) -4÷56
Answer:
a) -14x-4
try it out, it equals 56, proving the equation is true
10 times 10 times 10 times 10 times 10
Answer:
100000Step-by-step explanation:
10x10x10x10x10=100000
Answer:
100,000
Step-by-step explanation:
1.10 times 10=100
2.10 times 10 again
3.multiply 100 times 100
4.get 100,00
what number increase by 25 become s 150
Answer:
125
Step-by-step explanation:
n= 25 less than 150
150-25= 125
n= 125.
There are approximately 0.4536 kilograms in a pound. To the nearest whole pound, how many pounds does a steer that weighs 200 kg weigh?
Answer:
441
Step-by-step explanation:
200kg= 1 pound/0.4536kg
Cross the kg and you can convert that to 441 pounds
PLS HELP ASAP!!!!!!! I WILL MARK BRAINLIEST
The LSU tigers won the 2019 Football National Championship. Joe Burrow threw for 60 touchdowns in the 15-game season. What is the rate of touchdowns Burrow threw per game?
Answer:
what grade is this question?
Answer:
4 touchdowns a game
Step-by-step explanation:
you divide 60 touchdowns by 15 games
What numbers are rational numbers
Answer:
Every integer is a rational number. Numbers like 1/2, 454/242, and -6/9 are also rational because they are fractions whose numerator and denominator are integers. All in all, a rational number is any number that can be written as a simple fraction.
Hope this helps!
in which does -5/8 belong in
Answer:
It is a rational number, an integer, and a negative number.
If and are equivalent, what is the value of x?
Answer:
is the value of x. Step-by-step explanation: We have been given the two terms which are equivalent means they have equal value: and . So, by the given information: we have to solve for x: Firstly, we will cross multiply so, we will get: After simplification we will get the final result is the value of x.
Step-by-step explanation:
In the field of demography, is the term for the average number of people
per given area (e.g., per square kilometer).
A. demographic density
B. crowdedness
C. neighbor-to-neighbor distance
D. population density
Answer:
population density. is the ans
Paul owns 8 CDs, 6 of which are rock-and-roll. What percent of Paul's CDs are rock-and-roll?
Answer:
75% are rock and roll
Step-by-step explanation:
6 /8 = 3/4 = 0.75 = 75%
Need help please show much work as possible thank you
Answer to part A: 11w^2+7z^2
Answer to part B: 14w^2+9w
=================================================
Explanation:
For part A, the expression 4w^2+7w^2+7z^2 has one pair of like terms. That pair is 4w^2 and 7w^2 which combine to 11w^2. You add the coefficients to get 4+7 = 11, then tack w^2 onto everything to say 4w^2+7w^2 = 11w^2
We cannot combine 11w^2 and 7z^2 as they aren't like terms. So we leave it as 11w^2+7z^2
--------------------
In part B, the like terms are 15w and -9w. They combine to 15w-9w = 6w. You can think of it like 15-9 = 6 then stick a 'w' to each term. We cannot combine the w^2 term with the w terms.