Answer:
6 minutes
Step-by-step explanation:
'a' in the formula represents altitude in feet. You are told the altitude is 21000 feet, so put that into the formula:
21000 = 3400t +600
You can solve this for t:
20400 = 3400t . . . . . subtract 600 from both sides
6 = t . . . . . . . . . . . . . . . divide both sides by 3400
The problem statement tells you that t represents minutes after lift off, so this solution means the altitude is 21000 feet 6 minutes after lift off.
The question is asking for the number of minutes after lift off that the plane reaches an altitude of 21000 feet, so this answers the question directly:
The plane is at an altitude of 21000 feet 6 minutes after lift off.
What is the domain of the function represented in the graph?
Answer:
0-t-14
Step-by-step explanation:
Its the first one I don't want to type
WILL GIVE BRAINLIEST IF DO QUICKLY!!! $A$, $B$, $C$, and $D$ are positive digits such that $\overline {ABCD} + \overline {BCD} +\overline {CD} +\overline {D} = 2012.$ Find $A+B+C+D.$
If there are a total of 20 data values , with what frequency does the data value 3 occur
Answer:
Question: The Relative Frequencies For A Set Of Data Are Shown In The Table Below. Value Relative Frequency 1 0.15 2 0.10 3 0.45 4 0.30 If There Are A Total Of 20 Data Values, With What Frequency Does The Data Value 3 Occur?
Step-by-step explanation:
one fourth plus one tenth
Find common denomianators.
1/4 = 5/20
1/10 = 2/20
Add.
5/20 + 2/20 = 7/20
Therefore, the answer is 7/20.
Best of Luck!
Answer:7/20
Step-by-step explanation:first you have to find the common denominator which is twenty. Since 4x5 is 20 you multiply the 1 by five and get 5/20.
Then since 10x2 is 20 you have to muliply
1x2 and you get 2/20. Then you and 5/20 and 2/2o and you get 7/20
what expression is equivalent to 2x+3y-x-(8+1)
Answer:
Step-by-step explanation:
2x + 3y - x - 9
x + 3y - 9
8-9x-6-5x=4 can you please help me with this :)
Answer:
-1/7
Step-by-step explanation:
8 - 9x -6-5x =4
2-14x = 4
-14x = 2
x = -1/7
If f and g are functions, then (fog)(x) is always equal to (gof)(x)
true or false
Answer:
False
Step-by-step explanation:
Here is a counter example:
● f(x) = x^2
● g(x) = 3x
● (f○g)(x) = (3x)^2 = 9x^2 (1)
● (g○f)(x) = 3(x^2) = 3x^2 (2)
We can see that (1) and (2) aren't equal to each others.
The given statement is False
The following information should be considered:
[tex]f(x) = x^2\\\\g(x) = 3x\\\\(fog)(x) = (3x)^2 = 9x^2 (1)\\\\(gof)(x) = 3(x^2) = 3x^2 (2)[/tex]
based on the above calculations we can see that equation (1) and equation (2) are not equal to each other.
Learn more: https://brainly.com/question/1605083?referrer=searchResults
Anna's salary is four times Emily's salary. They decide to share the cost of a $120 gift card. Anna will contribute four times as much as Emily. How much does each contribute
Answer:
Emily will contribute $24 and Anna will contribute $96
Step-by-step explanation:
From the given information:
Let Emily's salary be x
and let Anna's salary be 4x since Anna's salary is four times Emily's salary.
They were to share the cost of a $120 gift card.
SO, x+4x = 120
5x = 120
x = 120/5
x = 24
Therefore, Emily will contribute x = $24
and Anna will contribute 4x = 4 × $24 = $96
find (fog)(3) f(x)=|x+2| g(x)= -x^2 f(x) = |x+2| g(x) = -x^2 a. -25 b. 1 c. 4 d. -15
Step-by-step explanation:
f{g(x)}
= -x²+2
now,
(fog)(3)= -3²+2
the intersection must have__letters
Answer:
12 letters
Step-by-step explanation:
Plz help me I'm real confused haha
Answer:
3 = D
4 = I
6 = G
7 = J
8 = B
9 = A & C
10 = H
Step-by-step explanation:
The sum of x and 7 is less than -3
Answer:
[tex]x+7<-3[/tex]
Step-by-step explanation:
Sum = +
Less than = <
Merge all together accordingly you get ;
[tex]x +7<-3[/tex]
If you solve the equation , you will get;
x<-10
symplify 2x2 + 4xl-5x2 +9
Answer:
Simplify the expression.
− 3 x² + 4 x l + 9
Answer:
7
Step-by-step explanation:
The answer turns out to be 7
2/3(4w+9) I NEED HELP ASAP
Answer:
We need to perform a multiplication.
Notice that all non-fraction factors are placed in the numerator.
The only factor in the new denominator is:
3
So most likely C.
is -10 greather than -7
Answer:
no
Step-by-step explanation:
-7 is bigger
Answer:
no, its less
Step-by-step explanation:
because in negatives the higher the number is (ex: -10) the less the value is, so its the opposite of positive numbers
Answer question 8,9 and 10 with full details.
Answer:
See Explanation
Step-by-step explanation:
8. (1)
Area of trapezoid = 1/2(sum of || sides) *perpendicular distance
36 =1/2(x+ y) * 6
36 = ((x + y)*3
36/3 = x + y
12 = x + y
x + y = 12.... (1)
8(2)
It is given that:
x = 2y....(2)
From equations (1) & (2)
2y + y = 12
3y = 12
y = 12/3
y = 4
From equation (2)
x = 2y = 2*4
x = 8
9.
Area of square = 1 square m
Side of square = 1 m
Area of circle = 1 square m
[tex]\pi {r}^{2} = 1 \\ {r}^{2} = \frac{1}{\pi} \\ r = \frac{1}{ \sqrt{\pi} } \\ c = 2\pi \: r \\ c = 2\pi \times \frac{1}{ \sqrt{\pi} } \\ c = 2 \sqrt{\pi} \\ c = 2 \sqrt{3.14} \\ c = 2 \times 1.77200451 \\ c = 3.54400902 \\ c = 3.544 \\ difference = 3.544 - 1 = 2.544 \\difference \approx \: 2.54[/tex]
cuánto es 0.45 de 50=
Answer:
es 0.225 ... I believe so
I need help with this problem, i am confused and don't know what to do.
Problems a through c are asking you what the values would be at those values.
What will the value of [tex]f(x)[/tex] be at [tex]x=0[/tex]? Let's look at the graph.
It seems at [tex]x=0[/tex], [tex]f(x)=0[/tex], meaning that [tex]f(0)=0[/tex]
Let's do the same for the others.
At [tex]x=-3[/tex], [tex]f(-3)=2[/tex]
At [tex]x=2[/tex], [tex]f(2)=-4[/tex]
For the last question, it is giving us the [tex]f(x)[/tex] value and asking us which [tex]x[/tex] values would give us that.
At [tex]f(x)=3[/tex], [tex]x=-2[/tex].
*Note* this function is continuous to the right, meaning that there is another point where [tex]f(x)=3[/tex].
Hope this helps.
頑張って!
Where can we put parentheses in 2 x 3+1+2 to make it equivalent to 12?
Which is the simplified form of the expression (6 Superscript negative 2 Baseline times 6 Superscript 5 Baseline) Superscript negative 3
Answer:
Superscript 16 Baseline EndFraction StartFraction 1 Over 4 x Superscript 14 y
Step-by-step explanation:
Superscript 16 Baseline EndFraction StartFraction 1 Over 4 x Superscript 14 y
Which of the following algebraic expressions could represent thirty less than one-half the value of x?
Answer: x/2-30
Step-by-step explanation: half= divide by 2 30 less= minus 30
If AB = 20, and BC = 10, what is AC?
Boyle's Law states that the volume of a fixed amount of gas (at constant temperature) is inversely proportional to the pressure of the gas. A pressure of 46 pounds per square inch (psi) has a volume of 360 cubic feet. What is the particular equation that represents the problem situation?
Step-by-step explanation:
According to Boyle's law,
[tex]$ V \propto \frac{1}{P} $[/tex]
or [tex]$ V = \frac{k}{P} $[/tex] , where k is the proportionality constant
Given that volume is 360 cubic feet and the pressure is 46 psi.
Therefore, replacing V with 360 cubic feet and P with 46 psi in the above equation gives
[tex]$ 360 = \frac{k}{46} $[/tex]
(360)(46) = k
k = 16560
\sqrt{12} real number whole number integer rational number
[tex]\sqrt{12}[/tex] is an irrational number
Please help! On my 2nd attempt again. '-'
Answer:
9?
Step-by-step explanation:
just try imputing number until you get the closet to what you need(Don't Take my answer as a fasho I haven't done this in a while
6x^2y^3 + 9xy^4 - 12x^3y
Answer:
3xy(2xy2+3y3−4x2)
Step-by-step explanation:
Select all that apply.
To which sets does
belong?
5/8
real numbers
rational numbers
Irrational numbers
Integers
whole numbers
natural numbers
Answer:
real, rational
Step-by-step explanation:
The set to which the fraction 5/8 belongs to are real numbers and rational numbers.
What are real numbers and rational numbers?A real number is a number that is both a rational number and an irrational number. A rational number is a number that can be expressed as a fraction of two integers
Examples of rational numbers are 1, 0, - 1, 5/8.
To learn more about rational numbers, please check: https://brainly.com/question/20435423
#SPJ2
I need help please I’m confused
Answer:
9. 3
10,1
Step-by-step explanation:
what is the value of x?
Answer: The value of x is 20
Step-by-step explanation:
The angles are vertical angles so they have to equal each other in other to solve for x.
(x + 40) = 3x
x + 40 = 3x subtract x from both sides
-x -x
40 = 2x Divide both side by 2
x= 20
This trip the family will spend $117.96. The next trip they will spend $119.27. This is an increase of ($117.96 − $119.27) or an increase of $1.31. What is the percent of increase? Round your answer to the nearest whole percent.
Answer:
1%
Step-by-step explanation:
To find the percent increase, take the difference over the original amount
1.31/ 117.96
.011105459
Change to percent form
1.110545948%
To the nearest percent
1%