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Anna35 [415]
3 years ago
14

Find all real zeros of the function y=-5x-7

Mathematics
2 answers:
Yakvenalex [24]3 years ago
5 0

Answer:

x=1 2/5

Step-by-step explanation:

Replace y with 0 and solve for x.

Ahat [919]3 years ago
4 0

Answer:  The required zero of the given function is x = -1.4.

Step-by-step explanation:  We are given to find all the real zeroes of the following function :

y=-5x-7~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)

Since the given function is linear, so it will have only one real zero.

Also, the zeroes of a function y = f(x) is given by f(x) = 0.

So, the zero of the given function (i) is

y=0\\\\\Rightarrow -5x-7=0\\\\\Rightarrow 5x=-7\\\\\Rightarrow x=-\dfrac{7}{5}\\\\\Rightarrow x=-1.4.

Thus, the required zero of the given function is x = -1.4.

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How do I write The sum of y and product of 7 and x
Cerrena [4.2K]

Answer:

The product of x and y would be (8)(-1) = -8. by adding the two equations you get 2x = 16 so x = 8. then y = 7 - x = -1. Therefore xy = -8.

3 0
2 years ago
A roof drops 6 feet for every 3 feet forword,determine the slope of the roof the slope can be positive or negative
dalvyx [7]

Answer:

The slope is -2

Step-by-step explanation:

Since the roof is decreasing in height as it goes forward, I know that the slope must be negative. The equation to find the slope is rise/run. The vertical change, or the rise, is -6 feet, so that value goes on top of the fraction. The horizontal value, or the run, is 3 feet so that goes on the bottom of the fraction.

Now our fraction is \frac{-6}{3}

If you simplify that fraction, you'll get -2.

8 0
3 years ago
What is the domain of f(x) = 2|x − 1| + 3? A. {x | x ≥ 3} B. {x | x < 1} C. {x | x ≤ -1} D. {x | x = all real numbers}
arlik [135]

Answer:

all real numbers

Step-by-step explanation:

f(x) = 2|x − 1| + 3

The domain is what values can we put in for x

There is no limit to what we can put in for x

therefore the domain is all real numbers

8 0
3 years ago
Suppose an investment of $8,400 doubles in value every decade. The function f(x) = 8400∙2x gives the value of the investment aft
Murljashka [212]

Answer:

50400

Step-by-step explanation:You just need to plug it in 3 where x is.Once you done that you need to multiply 8400x2 because we multiply from left to right this will equal 16800 then finally multiply that by 3 and you get 50400 or you could multiply first 2x3 and get 6 then 8400x6 which still equals the same thing.

6 0
3 years ago
Find YZ and WZ in rectangle WXYZ.
Anettt [7]

Answer: WZ=10, YZ=15

Step-by-step explanation:

6 0
2 years ago
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