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cestrela7 [59]
3 years ago
14

Pls help due soon I’ll be giving brainliest :))

Mathematics
2 answers:
Arada [10]3 years ago
8 0

Answer:

im pretty sure first question is 28.6 seconds

and second one is 276 total pounds

Step-by-step explanation:

The first one is 86 divided by 3 = 28.6 seconds

the second one is 23 x 12 = 276 pounds

Sergeeva-Olga [200]3 years ago
8 0

Answer:

7) 86 - 3x  8) 23 + 12w

Step-by-step explanation:

For question 7, the elevator's initial 'value' is 86 and the rate of change is 3 feet per second (x). The key word is 'descending'. Because of this the expression will subtract 3x instead of adding it. 86 - 3x

For question 8, the total weight is the crate's initial 23 and the extra (w) pounds for 12 boxes. 23 + 12w

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A sequence is defined by the formula f(n+1)=f(n)-3. If f(4)=22, what is f(1)?
noname [10]

Answer:

Since f(n + 1) = f(n) - 3, we can also say that f(n - 1) = f(n) + 3.

By which we can say f(n - 3) = f(n) + 9

Since f(4) is 22, then f(1) must be 22 + 9, or 31.

4 0
3 years ago
How to find x (similar triangles)
hammer [34]

Answer:

x = 2

Step-by-step explanation:

Parallel lines divides the transversals in proportion.

Therefore,

\frac{9}{4}  =  \frac{13.5}{x + 4}  \\  \\ 9(x + 4) = 13.5 \times 4 \\  \\ 9(x + 4) = 54 \\  \\ x + 4 =  \frac{54}{9}  \\  \\ x + 4 = 6 \\  \\ x = 6 - 4 \\  \\ x = 2

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3 years ago
The area of a square boxing ring is 436 square feet. What is the approximate length, in feet, of one side of the boxing ring?
katrin [286]
21ft because 436 squared is about 21.
3 0
4 years ago
Read 2 more answers
a park is in the shape of a rectangle 8 miles long and 6 miles wide. how much shorter is your walk if you walk diagonally across
lesya [120]
You need to use this particular formula
a^2 + b^2 = c^2
this allows you to solve for the sides of a triangle which is what the diagonal would look like if u were to draw it. a equals the width of the park and b equals the height of the park.
6^2 + 8^2 = c^2
next you need to multiply 6 by the power of 2
36 + 8^2 = c^2
then the same for the 8
36 + 64 = c^2
then add the numbers together.
100 = c^2
after you add you get the square root of 100 which is 10. a square root is 2 numbers that multiply together to equal a particular number. square root is what you do to cancel out a power of 2
so if you walk diagonally you go 10 miles instead of 14 miles leaving a difference of a whole 4 miles.

hope I helped
8 0
3 years ago
The graph of the function is shown. Which inequality represents the domain of the function?
Yuri [45]

Answer:

x≥-6

Step-by-step explanation:

The domain is every value of x.  Since the function does not include any values of x less than -6, x≥-6 is the domain.

8 0
4 years ago
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