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Lerok [7]
3 years ago
10

Erica used friendly numbers to find 43-19. She added 1 to 19 and subtracted 1 from 43. What is Erica's error?

Mathematics
2 answers:
Naily [24]3 years ago
8 0
I think that it is....
42-20=22
Olenka [21]3 years ago
7 0
She could have added 1 to 19 to give 20 then subtracted  this from 43 to give 23. Then she can add the 1 to 23 to get the correct answer which is 24.
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miv72 [106K]
4c+5.6d=1360
Let
Children (c)=x
Adults (d)=284-x

4x+5.6 (284-x)=1360
Solve for x
4x+1590.4-5.6x=1360
4x-5.6x=1360-1590.4
-1.6x=-230.4
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3 0
3 years ago
The graph of f(x) = |x| is transformed to g(x) = |x + 1| – 7. On which interval is the function decreasing?
timofeeve [1]

Answer:

g is decreasing for all x less than or equal to -1

Step-by-step explanation:

The graph of the function y = |x| looks like a "vee."

g(x) = |x + 1| - 7 moves that graph 1 unit to the <u>left</u><em> </em>(I know, it looks backwards!) and down 7 units. See attached image.

Function g(x) is decreasing for all x \le -1.

5 0
3 years ago
Read 2 more answers
If a pair of shoes (price of $40) is on discount for 50% off, then on clearance for another 50% off, what should you be paying a
kogti [31]

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3 0
3 years ago
F(x) = 2x² + x at (-1, 1)
lord [1]

Answer:

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3 years ago
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Rina8888 [55]

Answer:

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Step-by-step explanation:

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Dividing both equations:

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Therefore:

arctan(θ) = -2/3

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The answer does not depend on the sign of Φ, in fact we just need that the sine does not become zero, which occurs when Φ is equal to an integer times π (radians) or 180 (degrees)

Have a nice day!

3 0
3 years ago
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