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3 years ago

Determine whether the graphs of 7= 5x+9 and -y = -5x -9 are parallel, perpendicular, coincident, or none of these.

1 answer:

6 0

Assuming your first equation is y = 5x+9, the equations describe lines that are coincident.

_____
Multiplying the second equation by -1, it becomes y = 5x+9, the same as the first equation.

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Relationship A has a lesser rate than Relationship B. This table represents Relationship B.Which equation could represent Relati

Fittoniya [83]

i think it would be y=18x

i do not know you answer choices or any good details

y=18x is answer

5 0

3 years ago

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the original price of a pair of sunglasses is AED 149 The sale price is AED 110 Calculate the amount of the discount

Natalija [7]

Answer:

Discount= original price-sale price

Step-by-step explanation:

Hence D = AED149-AED110

D= AED 39

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2 years ago

Find the volume of the cone

zhenek [66]

Answer:

37.68

Step-by-step explanation:

The formula to be used is 1\3πr^2h

so going by the question π=3.14,r=2,h= 9

when u substitute each value into the formula u get you answer to be 37.68

5 0

3 years ago

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A line with a slope of -3 and an x-intercept of 15 passes through which following points?

Alla [95]

Let's first write down all the information given in y = mx + b form. Notice that x-intercept means that y = 0 at that point. b is not given, so:

$0 = -3(15) + b$

Let's solve for b:

$0 = -45+b$

$b = 45$

Now we have the equation:

$y = -3x + 45$

We can plug in every option given to see which choice makes it true:

(0, 30)

$30 = -3(0) + 45$

$30 \neq 45$

(5, 15)

$15 = -3(5) + 45$ $15 = -15+45$

$15\neq 30$

(10, 10)

$10 = -3(10) + 45$

$10 \neq 15$

(-5, 60)

$60 = -3(-5) + 45$

$60 = 60$

Therefore, choice D or (-5, 60) is your answer. Hope I could help! :)

*There is probably an easier way to solve this, I just didn't see it when I attacked the problem! :) 

5 0

3 years ago

Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest speed measured was 78.2 Mbp

maks197457 [2]

Answer:

The highest speed measured was 78.2 Mbps.

n = 50

$\bar {x}=18.22$

$s= 23.87$

a)What is the difference between carrier's highest data speed and the mean of all 50 data speeds?

= 78.2 - 18.22

=59.98

b)How many standard deviations is that [the difference found in part (a)]

= $\frac{difference }{s} = \frac{59.98}{23.87}=2.5127$

c) Convert the carrier's highest data speed to a z score.

$z=\frac{78.2 - 18.22}{23.87}$

$z=2.512$

d) If we consider data speeds that convert to z scores between minus2 and 2 to be neither significantly low nor significantly high

Yes the carrier's highest data speed is significant because it is greater than 2.

4 0

3 years ago