3 years ago

[-1 + (-4)] + (6/7 + 1/7)

Mathematics

1 answer:

Radda [10]3 years ago

4 0

Answer:-4

Step-by-step explanation:

-1 +-4 is -5 and 6/7 + 1/7 =1 so -5 +1=-4

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An airplane heading due east has a velocity of 210 miles per hour. A wind is blowing from the north at 38 miles per hour. What i

Nimfa-mama [501]

Answer:

The resultant velocity of the airplane is 213.41 m/s.

Step-by-step explanation:

Given that,

Velocity of an airplane in east direction, $v_1=210\ mph$

Velocity of wind from the north, $v_2=38\ mph$

Let east lies in the direction of the positive x-axis and north in the direction of the positive y-axis.

We need to find the resultant velocity of the airplane. Let v is the resultant velocity. It can be calculated as :

$v=\sqrt{v_1^2+v_2^2}$

$v=\sqrt{(210)^2+(38)^2}$

v = 213.41 m/s

So, the resultant velocity of the airplane is 213.41 m/s. Hence, this is the required solution.

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3 years ago

Alex got 21 out of 26 on a maths test and Miall got 23 out of 30 for a science test. who got the highest percentage?

Marizza181 [45]

A 21 out of 26 is equal to about an 80%
A 23 out of 30 is equal to about 73%
So Alex scored a higher grade on the science test

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3 years ago

If the rate of change is the same on the entire graph we say it has a ____ rate of change.

Vika [28.1K]

Answer:

Constant

Step-by-step explanation:

For a straight line for example,

Take any two points from the line and find the slope,

it will be the same value for any 2 points chosen

So throughout the graph, the slope/rate of change is not changing

That is

Throughout the graph rate of change/slope is constant

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3 years ago

The solution for 6x-8=7x is x—8 show the steps you would go through to check. That answer

prisoha [69]

6x-8=7x
-6x -6x
-8=1x
-8=x

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3 years ago

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What is the effect on the graph of the parent function f(x) = x when f(x) is replaced with f(x) - 4?

icang [17]

The graph moves down 4 units.

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3 years ago