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d1i1m1o1n [39]
3 years ago
15

Explain how to use models to divide 2.1 by 0.7

Mathematics
1 answer:
tankabanditka [31]3 years ago
6 0

Answer:

The answer is 3

Step-by-step explanation:

0.7*3 = 2.1

Think of it this way

its basically 7 times what equals 21?

then you find out 7 timex 3 = 21

and then put the decimals

0.7 times 3 (0.7 + 0.7 + 0.7) = 2.1

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If -1 < x < 0 which of the following has the smallest value?
Katyanochek1 [597]

Answer: (B) x^3

Explanation:

If you compare the graphs of

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  • y = x^4

all on the interval -1 < x < 0, you'll find that y = x^3 is the smallest when x = -1

Squaring a negative number leads to a positive result, and similarly that happens with x^4 as well. This is because x^4 = (x^2)^2.

Plugging x = -1 into x^3 leads to y = -1 as a result.

6 0
3 years ago
1) 4x-7y=3<br> x-7y=-15<br><br> 2) 9x+8y=15<br> 9x+8y=30
spin [16.1K]
1) x=6, y=3
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svetlana [45]

Answer:

c

Step-by-step explanation:

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4 0
3 years ago
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Find the cost of a $19,500 car plus a 6% sales tax
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There are 2 ways to do this...

19,500(1.06) = 20,670

or

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This is a fun problem!  Just graph the two equations, then see what points the line intersects with the parabola.  Or, set the two equations equal to each other, and solve for the two intersecting points.
Solve for x and y:       -2x+8 = x-2.23y+10.34 
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