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2 years ago

Write an equation in slope-intercept form for the line with y-intercept -1 and slope -4

Mathematics

2 answers:

SVETLANKA909090 [29]2 years ago

5 0

Answer:

f(x)=-4x-1

Step-by-step explanation:

f(x)=ax+b

a=-4/slope

b=-1/y-intercept

f(x)=-4x-1

muminat2 years ago

4 0

Y = mx + b
y = -4x - 1

Hope this helps!

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What is the result when 3x+25 is subtracted from 35x-410

Gnom [1K]

Answer:

32x-435

Step-by-step explanation:

(35x-410) - (3x+25)

35x-3x=32x

-410-25=-435

3 0

3 years ago

The mean housing price for an area is $135,000 with a standard of $45,000 but is not normally distributed. According to the Cent

kramer

Answer:

A sample size greater than 30

Step-by-step explanation: The central limit theorem proffers the conditions necessary to obtain a normal or bell shaped distribution. It defines normal distribution in terms of mean, standard deviation and sample size. The sample size is a very important factor in determining the shape of a distribution.

Thus with a population having mean and standard deviation stated, in other to make use of or assume normal distribution, the sample size must be large. According tho the central limit theorem, a size of greater than 30 is deemed to be large enough. As the Same size increases, the sample mean converges to the value of the population mean.

7 0

3 years ago

Is it ever possible that cos (A−B)=cos ⁡A−cos ⁡B? Why or why not?

Nookie1986 [14]

Answer:

The given equation is never possible i.e cos ( A - B ) ≠ cos A - cos B

Step-by-step explanation:

Given as :

Is cos ( A - B ) = cos A - cos B

To check this possibility , Let us put the value of angle A and B on both side of equation

Now, Let A = 60° and B = 30°

From Left hand side equation

cos ( A - B ) = cos ( 60° - 30° )

Or, cos ( A - B ) = cos 30°

∴ cos ( A - B ) = $\frac{\sqrt{3} }{2}$

or, cos ( A - B ) = 0.866

From Right hand side equation

cos A - cos B = cos 60° - cos 30°

Or, cos A - cos B = $\frac{1}{2}$ - $\frac{\sqrt{3} }{2}$

∴, cos A - cos B = 0.5 - 0.866

I.e cos A - cos B = - 0.366

So, Left hand side ≠ Right hand side

Since while equating the values of angle A and b in the given equation on both sides, we get that the value of both sides are not equal , Thus we can say that the given equation is not equal to each other .

Hence given equation is never possible i.e cos ( A - B ) ≠ cos A - cos B Answer

8 0

3 years ago

X 4 6 9 11 15

Kitty [74]

The mean of this discrete random variable is 7.96

Solution:

Given that,

x 4 6 9 11 15

P(x) 0.20 0.34 0.15 0.22 0.09

Mean is given as:

$\mu_{x}=\sum[x \times P(x)]$

Therefore,

$\mu_{x} = (4 \times 0.20) + (6 \times 0.34 ) + (9 \times 0.15 ) + (11 \times 0.22 ) + (15 \times 0.09)\\\\Simplify\\\\\mu_{x} = 0.8 + 2.04 + 1.35 + 2.42 + 1.35\\\\\mu_{x} = 7.96$

Thus, mean of this discrete random variable is 7.96

7 0

3 years ago

Please answer quick!!

vesna_86 [32]

Are those X’s or K’s

6 0

3 years ago

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