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svetoff [14.1K]
3 years ago
12

Estimate the sum or difference.Use the benchmarks, 0, 1/2, and 1.

Mathematics
1 answer:
m_a_m_a [10]3 years ago
7 0
Hmm
23/40 is like 1/2
11/30 is between 1/2 and 0, about 1/3

so

1/2-1/3 is hmm
somewhere between 1/2 and 0, closer to 0 tho

A is answer
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If a=6 and b=24 what is (a+b)^2
Greeley [361]

Answer:

900

Step-by-step explanation:

6+24=30

30^2=900

7 0
3 years ago
Read 2 more answers
A swim coach has at most $800 to buy equipment for the swim team. Each pull buoys costs $5.50 and each kickboard costs $10. Let
olga2289 [7]

Answer:

  A)  5.50x + 10y ≤ 800

  B)  yes

  C)  no

  D)  80 pull buoys and 35 kick boards

Step-by-step explanation:

A) The sum of costs must not exceed the budget:

  5.50x +10.00y ≤ 800

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B) 5.50(0) +10.00(50) = 500 ≤ 800 . . . . . yes, the coach could buy these

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C) 5.50(125) +10.00(25) = 937.50 > 800 . . . no, they cost too much

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D) The point (80, 35) is in the solution space. The coach could buy 80 pull buoys and 35 kick boards.

7 0
3 years ago
Hi. I'm kind of confused on this question. Pls help
Musya8 [376]

Answer:

B is the awnser.

Step-by-step explanation:

cuz it is incorrect.

7 0
3 years ago
I don’t understand the polynomials
Serhud [2]
Polynomial comes from poly- (meaning "many") and -nomial (in this case meaning "term") ... so it says "many terms"

A polynomial can have:

constants (like 3, −20, or ½)
variables (like x and y)
exponents (like the 2 in y2), but only 0, 1, 2, 3, ... etc are allowed
that can be combined using addition, subtraction, multiplication and division ...

... except ...

... not division by a variable (so something like 2/x is right out)

So:

A polynomial can have constants, variables and exponents,
but never division by a variable.

Also they can have one or more terms, but not an infinite number of terms.

These are polynomials:

3x
x − 2
−6y2 − ( 79 )x
3xyz + 3xy2z − 0.1xz − 200y + 0.5
512v5 + 99w5
5
(Yes, "5" is a polynomial, one term is allowed, and it can be just a constant!)



These are not polynomials

3xy-2 is not, because the exponent is "-2" (exponents can only be 0,1,2,...)
2/(x+2) is not, because dividing by a variable is not allowed
1/x is not either
√x is not, because the exponent is "½" (see fractional exponents)


But these are allowed:

x/2 is allowed, because you can divide by a constant
also 3x/8 for the same reason
√2 is allowed, because it is a constant (= 1.4142...etc)
7 0
3 years ago
Still waiting for the server? How does your web browser get a file from the
disa [49]

Answer:

Your computer sends a request for the file to a Web server, and the Web server sends back a response.

Step-by-step explanation:

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