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3 years ago

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Mathematics

1 answer:

mojhsa [17]3 years ago

8 0

Hdjdklsoeloeleorjfjfnifk

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What value of x would make line m || line n?

8_murik_8 [283]

54 as opposite angles are the same and they need to have the same angle to be parallel

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3 years ago

the speed of a stream is 4mph. If a boat travels 92 miles downstream in the same time that it takes to travel 46 miles upstream,

Elanso [62]

Answer:

12 miles per hour

Step-by-step explanation:

Let speed of boat in still water be "x"

and speed of current be "c"

So, downstream rate would be "x + c"

And, upstream rate would be "x - c"

Now, given c = 4

We can use the distance formula, D = RT, where

D is distance, R is rate, and T is time

to solve this.

Downstream:

D = RT

92 = (x+4)(t)

Upstream:

D = RT

46 = (x-4)(t)

Both the times are same, we can equate both the times. Lets simplify first:

t = 92/(x+4)

and

t = 46/(x-4)

Equate:

$\frac{92}{x+4}=\frac{46}{x-4}$

Now, cross multiply and solve for x to get our answer:

$\frac{92}{x+4}=\frac{46}{x-4}\\92(x-4)=46(x+4)\\92x-368=46x+184\\46x=552\\x=12$

Speed of Boat (in still water) = 12 mph

6 0

3 years ago

Calculate the Area: 6ft 3ft 8ft I need this asap

SSSSS [86.1K]

Answer:

Answer is 72

Step-by-step explanation:

6 times 8 is 48. 3 needs to be divided by 2 to made into 1.5. Then multiply 48 and 1.5 to make 72ft your answer

6 0

2 years ago

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What are thesolutions to the quadratic equation 0=−32−4+5?

const2013 [10]

Answer:

-31

Step-by-step explanation:

0 equal nothing so you will do -32-4+5 to get your answer

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4 years ago

A restaurant manager collected data to predict monthly sales for the restaurant from monthly advertising expenses. The model cre

Mariulka [41]

Answer:

The value of the coefficient of correlation (r) is 0.6.

Step-by-step explanation:

It has been provided that the coefficient of determination $(R^{2} )= 0.36$ .

It is known that the coefficient of determination depicts the variation in the dependent variation which is explained by the explanatory (independent) variable. The symbol used for the coefficient of determination is $(R^{2} )$ .

To compute the correlation coefficient from the coefficient of determination the square root is taken.

Here, the value of the correlation coefficient can be computed as:

Correlation coefficient (r) = $\sqrt{R^{2} } = \sqrt{0.36} =0.6$

Thus, the value of the coefficient of correlation (r) is 0.6.

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3 years ago

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