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3 years ago

Explain how you can prove that 3 weeks is less than 24 days

2 answers:

8 0

There are 7 days in a week. If you add 7 three times, you get 21, which means that three weeks equals 21 days, which is less than 24

Anastaziya [24]3 years ago

8 0

7 days in a week. 7x3=21. 3 weeks= 21 days which is less than 24 days

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Write a polynomial function of minimum degree in standard form with real coefficients whose zeros and their multiplicities inclu

Softa [21]

Answer-

The polynomial function is,

$y=x^4-10x^3+38x^2-64x+40$

Solution-

The zeros of the polynomial are 2 and (3+i). Root 2 has multiplicity of 2 and (3+i) has multiplicity of 1

The general form of the equation will be,

$\Rightarrow y=(x-(2))^2(x-(3+i))(x-(3-i))$ ( ∵ (3-i) is the conjugate of (3+i) )

$\Rightarrow y=(x-2)^2(x-3-i)(x-3+i)$

$\Rightarrow y=(x^2-4x+4)((x-3)-i)((x-3)+i)$

$\Rightarrow y=(x^2-4x+4)((x-3)^2-i^2)$

$\Rightarrow y=(x^2-4x+4)((x^2-6x+9)+1)$

$\Rightarrow y=(x^2-4x+4)(x^2-6x+10)$

$\Rightarrow y=x^2x^2-6x^2x+10x^2-4x^2x+4\cdot \:6xx-4\cdot \:10x+4x^2-4\cdot \:6x+4\cdot \:10$

$\Rightarrow y=x^4-10x^3+14x^2+24x^2-40x-24x+40$

$\Rightarrow y=x^4-10x^3+38x^2-64x+40$

Therefore, this is the required polynomial function.

4 0

4 years ago

Reflect (2.5,4.5) in the x-axis.

lawyer [7]

You can’t .................

5 0

3 years ago

A rectangular field 50 metres wide and x metres long required 260 metres of fencing

KatRina [158]

Answer:

x=80

Step-by-step explanation:

im going to assume this is perimeter.

50+50=100

260-100=160

160÷2=80

3 0

3 years ago

Read 2 more answers

Can someone help pls

finlep [7]

It’s C like the guy said

4 0

3 years ago

a car travels 177 miles in 3 hours. find the average speed of the car in feet per second. round to the nearest whole number.

Agata [3.3K]

177 miles/3 hour x (5280 ft/1 mile) x (1 hour/3600 seconds)=934560/10800=86.533 ft/sec

86 ft/sec

8 0

3 years ago