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antiseptic1488 [7]
3 years ago
5

Can somebody help me with these questions?

Mathematics
1 answer:
skelet666 [1.2K]3 years ago
6 0
For 6, it's A. For 7, it's A, and for the last one, what's the question?
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Which shows the best estimate to use<br> to find 43 × 78?
Over [174]

Answer:

The best estimate for 43x78 is 40x80

Step-by-step explanation:

43 rounded to the nearest ten is 40.

78 rounded to the nearest ten is 80.  

The answer to 40x80 is 3200

4 0
3 years ago
HELP ASAPPPP PLEASE I NEED TO FINISH ASAP
defon

Answer:

-15.3, -15.1, -12.3, -11.4, -11.4, 19.6

Step-by-step explanation:

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2 years ago
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Now evaluate. Substitute −2 for x in the composition f(g(x)) = 4x6 + 4x3 + 1, then simplify. f(g(−2)) =
Viktor [21]
F(g(-2))=4(-2)^6+4(-2)^3+1
f(g(-2))=4(64)+4(-8)+1
f(g(-2))=256-32+1
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f(g(-2))=225
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3 years ago
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Step-by-step explanation:

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2 years ago
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A train traveled 63.75 miles at a rate of 85 miles per hour. Which equation can be used to find h, the number of hours it took t
sashaice [31]

Answer:  63.75 = 85h

Solving gives 0.75 hours.

Step-by-step explanation:

we now that speed = distance / time

therefore time will be Distance / speed

Given that distance = 63.75miles

Speed= 6=85miles per hour

Time(h) = 63.75miles/ 85.---- equation 1

But from the options given, the equation that can also  be used to find number of hours is

63.75 = 85h

such that making h subject of formula  still give us

h= 63.75/85  as in equation 1 above

solving gives that Time ( h) = 0.75 hours .

8 0
2 years ago
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