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LekaFEV [45]
3 years ago
5

Ms Amani and mr Blake each ordered supplies for their classroom

Mathematics
1 answer:
swat323 years ago
6 0

Could you please write the full question so we can correctly answer the question for you? Or upload a picture of the question, if you don’t want to type?

Hope this helps!

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Given f(x)=9-2x, if f(x)=19, find the value of x. Can some one help please?
eimsori [14]

Answer: -5

Step-by-step explanation: 19 -9 = 10. 10/-2 = -5

6 0
3 years ago
Read 2 more answers
A statistical question is a question that should have different answers. How to recognize a statistical question? • A question i
Alenkasestr [34]

Answer:

yes but no a statistical question is determined by requiring multiple data

Step-by-step explanation:

3 0
3 years ago
Let u = <-4, 3>. Find the unit vector in the direction of u, and write your answer in component form. (2 points)
lana66690 [7]

Answer:  < -4/5,  3/5>

This is equivalent to writing < -0.8, 0.6 >

======================================================

Explanation:

Draw an xy grid and plot the point (-4,3) on it. Draw a segment from the origin to this point. Then draw a vertical line until reaching the x axis. See the diagram below.

We have a right triangle with legs of 4 and 3. The hypotenuse is \sqrt{4^2+3^2} = \sqrt{16+9} = \sqrt{25} = 5 through use of the pythagorean theorem.

We have a 3-4-5 right triangle.

Therefore, the vector is 5 units long. This is the magnitude of the vector.

Divide each component by the magnitude so that the resulting vector is a unit vector pointing in this same direction.

Therefore, we go from < -4, 3 > to < -4/5,  3/5 >

This is equivalent to < -0.8, 0.6 > since -4/5 = -0.8 and 3/5 = 0.6

Side note: Unit vectors are useful in computer graphics.

6 0
1 year ago
An initial amount of 180 grows at a rate of 22% every month. Write an exponential equation for the amount y after x months
il63 [147K]

Answer:

An initial amount of 180 grows at a rate of 22% every month.

=> The equation for the amount y after x months:

y = 180 x (1 + 22/100)^x

 

Hope this helps!

:)

6 0
3 years ago
Please help! For the function f(x) = 2x^6 + 3x^4 - 4x^3 + (1/x) - sin(2x) find the first four derivatives.
klasskru [66]

Answer:

See the explanation

Step-by-step explanation:

We know that

f(x) = 2x⁶ + 3x⁴ - 4x³ + (1/x) - sin2x

Lets calculate the derivatives:

f'(x) = 6(2x⁵) + 4(3x³) - 3(4x²) -( 1/x²) - 2(cos2x)

f'(x) = 12x⁵ + 12x³ - 12x² - (1/x²) - 2cos2x

Similarly:

f''(x) = 60x⁴ + 36x² - 24x + (2/x³) + 4sin2x

f'''(x) = 240x³ + 72x - 24 - (6/x⁴) + 8cos2x

Rearrange:

f'''(x) - 240x³ +72x - (6/x⁴) + 8cos2x - 24

f''''(x) = 720x² + 72 + (24/x⁵) - 16sin2x

Rearrange:

f''''(x) = 720x² + (24/x⁵) - 16sin2x +72

8 0
2 years ago
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