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tigry1 [53]
3 years ago
6

ANSWER ASAP PLEASE!!!!!!!!!!!! THANKS!!!!!!!!! :)

Mathematics
1 answer:
krok68 [10]3 years ago
6 0

Answer: the answer is A

Step-by-step explanation:

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F(z) = (z - 5)(2x + 7) (73 = 3) has zeros at x = -3.5, x=3/7 , x=5 What is the sign of f on the interval 3/7 < x <5?
Gwar [14]
<h3>Answer:     Negative</h3>

======================================================

Explanation:

3/7 = 0.42857 approximately

Pick a number between that value and 5, not including either endpoint. Let's say we pick x = 2

Plug x = 2 into the f(x) function

f(x) = (x - 5)(2x + 7)(7x-3)

f(2) = (2 - 5)(2*2 + 7)(7*2-3)

f(2) = (2 - 5)(4 + 7)(14-3)

f(2) = (-3)(11)(11)

f(2) = -363

The actual result doesn't matter. All we're after is whether the result is positive or negative. We see the result is negative. This means f(x) is negative when 3/7 < x < 5. The f(x) curve is below the x axis on this interval.

3 0
3 years ago
Trang has a job planting shrubs beside the highway. He needs to plant 500 shrubs in a week. So far, he has planted this many: Mo
Viefleur [7K]
84+92+87+104=367
500-367=133
He needs to plant 133 shrubs on Friday
3 0
3 years ago
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A rectangle on a coordinate plane has vertices Q(-1,1), R(6, 1), S(6-8), and T(-1,-8). What are the dimensions of the
slavikrds [6]

Answer:

the base length of the triangle is 4 units, u can count that. and the height of triangle is 2 units, thats the dotted line one. and the equation of triangle area is (length x height) divided by 2so in this case it'll be (4x2) /2=4 square units.

Step-by-step explanation:

6 0
3 years ago
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Find the percent of change. Label increase or decrease. Round to the nearest tenth of a percent
notka56 [123]

Answer:

0.15% decrease

Step-by-step explanation:

18.75 - 18.60 = 0.15

Hope this helped!

8 0
3 years ago
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Which two points lie on a line with an undefined slope?
Ierofanga [76]
Slope formula is
m = (y2 - y1)/(x2 - x1)

A. m = (5 - 0)/(-2 + 2)
m = (5)/(0)
m = error

B. m = (-2 - 0)/(0 + 2)
m = (-2)/(2)
m = -1

C. m = (2 - 0)/(2 - 0)
m = (2)/(2)
m = 1

D. m = (0 - 0)/(2 - 3)
m = (0)/(-1)
m = 0

the undefined slope would be the one that came out as error, so A
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3 years ago
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