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alexgriva [62]
3 years ago
7

–7x + 10 = –20 or 10 = 7x – 20

Mathematics
2 answers:
marin [14]3 years ago
6 0
It depends what the y intercept of the line is
Nezavi [6.7K]3 years ago
3 0

Answer:

x=\frac{30}{7}

Step-by-step explanation:

Step 1: Subtract 10 from both sides.

−7x+10 −10= −20 -10

−7x=−30

Step 2: Divide both sides by -7.

−7x /−7  =  −30 /−7

x= 30 /7

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Which of the following sets of values correctly completes the t-chart for the equation y = 2x2 - 1.
natali 33 [55]

Answer:

The sets of values that correctly completes the t-chart are:

7, -1, 7

Hence, option B is true.

Step-by-step explanation:

Given the equation

y = 2x² - 1

FOR x = -2

substitute x = -2 in the equation

y = 2x² - 1

y = 2(-2)² - 1

y = 8 - 1

y = 7

FOR x = 0

substitute x = 0 in the equation

y = 2x² - 1

y = 2(0)² - 1

y = -1

FOR x = 2

substitute x = 2 in the equation

y = 2x² - 1

y = 2(2)² - 1

y = 8 - 1

y = 7

Thus, the t-chart becomes:

x              y

-2            7

0             -1

2              7

Thus, the sets of values that correctly completes the t-chart are:

7, -1, 7

Hence, option B is true.

7 0
3 years ago
For which function is the average rate of change over the interval 1 < x < 5 greater than the average rate of change over
Rainbow [258]

Answer:

We do not have the function g(x), but this can be solved in a trivial way.

The average rate of change in a interval is the slope over that interval, so the average rate of change of g(x) in the interval 1 < x < 5 is

p = (g(x2) - g(x1))/(x2 - x1) where x2 > x1

p = (g(5) - g(1))/(5 - 1) = (g(5) - g(1))/4

Now, suppose that i have the new equation h(x) = g(x) + x

the rate of change of this function, the average rate of change in the interval will be:

p' = (h(5) - h(1))/(5 - 1) = (g(5) + 5 - g(1) - 1)/4 = (g(5) - g(1))/4 + 4/4 = p +1

so p' > p

and the average rate of change of h(x) is bigger than the one of g(x) in the interval 1< x < 5

5 0
3 years ago
Read 2 more answers
A class had 6 students absent one Monday, This was of
iVinArrow [24]

Step-by-step explanation:

la 6 es la mejor rspuesta

7 0
3 years ago
Donavan earned 11$ for 2 hours of babysitting on Saturday ha babysat the same family but got 38.50$ how many hours do he babysit
ira [324]

Answer:

7 hours

Step-by-step explanation:

Tuesday - $11/2hrs

Saturday -  $38.50/x

2*38.50 = 77

77 = 11x

77/11 =x

7=x

7hrs

6 0
4 years ago
Find x for the problem
oee [108]

Answer:

14.4

Step-by-step explanation:

sin x = 24/30

x = sin^-1 (24/30) = 53.13

sin 53.13 = x/18

x = sin 53.13 x 18 = 14.4

6 0
3 years ago
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