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VLD [36.1K]
3 years ago
8

Solve using the guess-and-test strategy. . . The math club has 57 members who are in sixth or seventh grades. There are twice as

many sixth graders as seventh graders. . . How many sixth graders are in the club?. . A.. 38. . B.. 37. . C.. 19. . D.. 18
Mathematics
1 answer:
REY [17]3 years ago
8 0
The guess-and-test strategy may be made easier by using the choices.
A. 38 sixth graders   ----> 57 - 38 = 19 . There are 19 seventh graders. This option already satisfy the condition that the number of sixth graders should be twice that of the seventh graders. There is no need to test for the remaining choices. The answer is letter A. 
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zysi [14]

Answer:

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We can say slope of f(x) is positive  and 3 more than slope of g(x) while slope of g(x)  is negative.

Difference of y-intercepts of f(x)\ and\ g(x) is = -7

We can say the y-intercept of g(x) is positive and 7 units above f(x) while y-intercept of f(x)  is negative.

Step-by-step explanation:

Given equation:

f(x) =2x - 2

g(x) =5-x

We need to find the difference of slopes and y-intercepts of the given equations.

The standard form of a slope intercept equation of line is given by:

y=mx+b

where m represents slope and b represents y-intercept of line.

Writing the given equations in standard form to find slope and y-intercept.

f(x) =2x +(-2)

Slope = 2 and y-intercept =-2

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The difference in slopes of f(x)\ and\ g(x) is = 2-(-1)=2+1=3

We can say slope of f(x) is positive  and 3 more than slope of g(x) while slope of g(x)  is negative.

Difference of y-intercepts of f(x)\ and\ g(x) is = -2-5=-7

We can say the y-intercept of g(x) is positive and 7 units above f(x) while y-intercept of f(x)  is negative.

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3 years ago
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Answer:

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Answer:

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SpyIntel [72]

Answer:

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