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Lelechka [254]
2 years ago
8

A system of equations is shown below.

Mathematics
1 answer:
katrin [286]2 years ago
4 0

Answer:

I: 4x-5y=-10

II: 2x-7y=4

c) multiply the second equation by -2 and add the result to the first equation

II*-2=-4x+14y=-8

add I+II*-2: 4x-5y+(-4x+14y)=-10-8

=9y=-18

Step-by-step explanation:

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For the functions f(x) = 4x + 7 and g(x) = -9x + 11, find f(g(0)). For the functions f(x) = 3x2 - 7 and g(x) = -3x2 + 4, find f(g(2)). (Do NOT put commas in large numbers.)
3 0
3 years ago
Identify the graph described by the function p(x)=x/10 for x=1,2,3,4
san4es73 [151]

Answer:

Graph A is correct

Step-by-step explanation:

p(x)= x/10

x= 1, 2, 3, 4

Plug in x  values in p(x)

when x=1 , then P(1) = 1/10

When x=2 , then P(2) = 2/10

When x=3 , then P(3) = 3/10

When x=4 , then P(4) = 4/10

In the graph y axis has 2/10 , 4/10 , 6/10...

1/10 lies between 0  and 2/10

3/10 lies between 2/10 and 4/10

Graph A is correct

7 0
3 years ago
Find the probability of having 2,3, or 4
Vikki [24]

Answer:

120%

Step-by-step explanation:

3 0
2 years ago
There are two calculus classes at your school classes have a class average of 75.5 the first class as a standard deviation of 10
DENIUS [597]
To compare the two classes, the Coefficient of Variation (COV) can be used.

The formula for COV is this:
C = s / x

where s is the standard deviation and x is the mean

For the first class:
C1 = 10.2 / 75.5
C1 = 0.1351 (13.51%)

For the second class:
C2 = 22.5 / 75.5
C2 = 0.2980 (29.80%)

The COV is a test of homogeneity. Looking at the values, the first class has more students having a grade closer to the average than the second class.
8 0
3 years ago
Emilio has 8,450 trees to plant in row of his tree garden.He will plant 125 trees per row.How many full rows of trees will he ha
Gnoma [55]

Answer:

67 full rows

Step-by-step explanation:

8450÷125 =67.6 since the .6 isn't a full row there is 67 full.

6 0
3 years ago
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