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2 years ago

I dont get how to do these questions -25x=-150

Mathematics

2 answers:

svet-max [94.6K]2 years ago

6 0

Answer:

x=6

Step-by-step explanation:

you divide -25 on both sides

AlekseyPX2 years ago

4 0

-25x=-150

divido todo por -25 lo que me da es

x=6

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Two hikers, Charles and Maria, begin at the same location and travel in perpendicular directions. Charles travels due north at a

attashe74 [19]

Answer:

d(L)/dt = 9,43 miles per hour

Step-by-step explanation:

As Charles and Maria travel in perpendicular directions, these directions could be considered as two legs ( x and y ) of a right triangle and distance (L) between them as the hypotenuse, therefore, according to Pythagoras theorem

L² = x² + y²

And as all ( L , x , and y ) are function of time, we apply differentiation in both sides of the equation to get

2* L d(L)/dt = 2*x*d(x)/dt + 2*y*d(y)/dt (1)

In equation (1) we know:

d(x)/dt = 8 miles/per hour ( Maria )

d(y)/dt = 5 miles /per hour (Charles)

In 3 hours time Maria has travel 3*8 = 24 miles

And Charles 5*3 = 15 miles

Then at that time L is equal to

L = √ 24² + 15² ⇒ L = √ 576 + 225 ⇒ L = √801 ⇒ L =28,30 miles

Then plugging these values in equation (1)

2* L d(L)/dt = 2*x*d(x)/dt + 2*y*d(y)/dt

2* 28.30 * d(L)/dt = 2*24*8 + 2* 15*5

56.6 *d(L)/dt = 384 + 150

d(L)/dt = 534/56,6

d(L)/dt = 9,43 miles per hour

4 0

3 years ago

pay varies directly with the number of sales he makes. He made 22 sales and earned $154. How much will he earn for 35 sales? $

miss Akunina [59]

154/22 ×35 =245$ is the answer

7 0

3 years ago

Read 2 more answers

Guys I need help this due soon

diamong [38]

Answer:

the sequence is continuing by multiplying -4

5 0

3 years ago

in a repeating musical pattern,there are 56 beats in 7 measure.How many measures are there after 104 beats

Nostrana [21]

7x=56

56/7=8

x=8

104/x=answer

104/8=13

So after 104 beats there will be 13 measures

3 0

3 years ago

What is the minimum y-value after which the exponential function will always be greater than the linear function? y = 1 y = 3 y

Stells [14]

Answer:

y = 4.

Step-by-step explanation:

I suppose that this question relates to the image that can be seen below.

In the image, the green line represents the exponential function and the blue line represents the linear function.

The y-value after which the exponential function will always be greater than the linear function is the y-value where bot graphs intersect, such that after that point, the blue line starts increasing fast, and is always above the green line.

In this case, this point is the second intersection, and we can see that this intersection happens in the point (2, 4)

Remember that the usual notation for points is (x, y).

Then the y-value after which the exponential function will always be greater than the linear function is y = 4.

5 0

2 years ago