9(n-4)-7n=32-2(n+8)
Answers
Answer:
answer is 13
Step-by-step explanation:
hope it helps.
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A swimming pool holds 900 cubic meters of water. If its length is 20 meters and its height is 3 meters, find its width
For one month Siera calculated her home town’s average high temperature in degrees Fahrenheit. She wants to convert that temperature from degrees Fahrenheit to degrees Celsius using the function . What does C(F) represent?
A rectangular paperboard measuring 26 in long and 20 inwide has a semicircle cut out of it.Find the area of the paperboard that remains. Use the value 3.14for π, and do not round your answer. Be sure to include the correct unit in your answer.
Use cross products to demonstrate whether the two ratios are equivalent in this problem: 4 over 6 times 14 over 21
Answers
The result of 155 divided by 5 is 31.
To calculate 155 divided by 5, we can perform long division to find the quotient.
Step 1: Set up the long division:
31
___________
5 | 155
Step 2: Determine how many times 5 can go into the first digit of 155 (which is 1). It goes 0 times, so we write 0 above the division bar.
31
___________
5 | 155
0
Step 3: Bring down the next digit (5) and place it next to the 0. Now we have 15.
31
___________
5 | 155
0
15
Step 4: Determine how many times 5 can go into 15. It goes 3 times (5 x 3 = 15). Write 3 above the division bar.
31
___________
5 | 155
0
-15
15
Step 5: Subtract 15 from 15 to get 0. Bring down the next digit (5).
31
___________
5 | 155
0
-15
15
-15
Step 6: Determine how many times 5 can go into 0. It goes 0 times, so we write 0 above the division bar.
31
__________
5 | 155
0
-15
15
-15
0
Step 7: Since there are no more digits to bring down and no remainder left, the division is complete. The quotient is 31.
Therefore, 155 divided by 5 equals 31.
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The angle of elevation of D from A I'd 28°.
The angle of elevation of D from B is 54°.
AB=25m
Calculate the height of the tower.
Give your answer in 3 significant figures.
I need working out. Plz help me.
Answers
and then the measure of ADB= x
and x + 26° + 28°= 180°, sum of anlgle in a triagle property
it means x= 180°- 26-28=126°
application of sinus law in the triangle
sin 28 / BD = sin 126/ AD = sin 26/ 25 so we can deduce that
AD= 25sin126 / sin26= 46.12
let 's consider the triangle ADC, so for finding h, we have sin 28 = h / AD
and then h = AD x sin28=21.65
Calculate the height of the tower is 21.65
Answers
In linear equation, the two inflection points of f(x) are at x = 1 or x = 4
What are instances of linear equations?
- Ax+By=C is the typical form for linear equations involving two variables.
- A standard form linear equation is, for instance, 2x+3y=5. It is rather simple to locate both intercepts when an equation is stated in this way (x and y).
- When resolving systems of two linear equations, this form is also incredibly helpful.
We are aware that f(x) has a decreasing order if f'(x) 0 and a rising order if f'(x) > 0.
seen in the graph If f(x) is evidently growing on x (2, ) and decreasing on x ( 0,2) Since f(x) is dropping, if 0 x 2 is true, then f'(x) 0.
Since f(x) is rising, f'(x) > 0 if x > 2 is true.
Since f(X) is concave down, if 0 x 1 is true, then f"(x) 0 and vice versa.
Since f(X) is concave up, f"(x) > 0 and is true if 1 x 4
Given that f(X) has a concave downward shape, e) f"(x) 0 if x > 4 is true.
The two inflection points of f(x) are at x = 1 or x = 4.
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Answer:
0 if 0≤x<1; T (d) f″(x)>0 if 14; T
Step-by-step explanation:
2 and the other is x= 2
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Answers
x is equal to
2
+ 3x - 4, and the speed of the walkway is W(x) = x
2 - 4x + 7.
20. What is his total speed as he walks along the moving walkway?
21. Carlos turned around because he left his cell phone at a restaurant.
What was his speed as he walked against the moving walkway?
Answers
His speed was 2x² + 7x - 11 as he walked against the moving walkway.
What is a function?
Function is a type of relation, or rule, that maps one input to specific single output.
We are given that Carlos is walking on a moving walkway. His speed is given by the function
C(x) = 3x² + 3x - 4,
The speed of the walkway is W(x) = x² - 4x + 7.
The total speed as he walks along the moving walkway is;
x² - 4x + 7+ 3x² + 3x - 4,
= 4x² - x + 3,
Given Carlos turned around because he left his cell phone at a restaurant.
If he walked against the moving walkway
- x² + 4x - 7 + 3x² + 3x - 4,
2x² + 7x - 11
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