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djverab [1.8K]
3 years ago
11

Module 6 Polynomial the question is in the picture. Alana completed a problem where she had to find the sum of the polynomials (

3x^2+8x-4) and (-8x^3-3x+4). Her answer is 0. Complete the explanation and correct her mistake. When graphed, how many times does the sum change directions??
A rectangular plot of land has a length of (2x^2+5x-20) and a width of (3x+4). What is the polynomial representing the area of the plot of land? Explain how you got your answer. Below.

Mathematics
1 answer:
dybincka [34]3 years ago
8 0
Actually i was going to ask you the same question

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Jake completed a marathon race in 3 hours and 12 minutes. What would be Jake's running time as a decimal?
VikaD [51]

\text{Given that Jake completed a marathon race in 3 hours and 12 minutes.}\\
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\text{we need to find this time in decimals. so we will convert 12 minutes into hours}\\
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\text{We know that there are 60 minutes in 1 hour. }\\
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\text{so in 1 minute there will be}=\frac{1}{60 }\text{ hour}

\text{hence in 12 minutes we have}=\frac{1}{60}\times 12=\frac{1}{5}=0.2 \text{ hours}\\
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\text{hence the Jake's running time is}=3\text{hours + 12 minute}\\
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=3\text{ hours}+0.2 \text{ hours}\\
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=3.2 \text{ hours}

Hence, Jake's running time in decimal is: 3.2 hours

4 0
3 years ago
Christofle is making a doll house the doll house 6/10 meter high without the roof.Thelp roof is 15/100 meter high what will them
Alja [10]
You have to change the denominator of 6/10 into 100 then you will get 60/100 then you add 15/10+60/100
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In which quadrant or on which axis each of the following points lie.
AlekseyPX

Answer:

(-3,5) Quad 2

(4,-1) Quad 4

(2,0) Positive X axis

(2,2) Quad 1

(-3,-6)​ Quad 3

Step-by-step explanation:

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Cos α = sin (90-α) so cos 19 = sin 90-19 = sin 71
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Solve for x. <br><br> -3x + 4 = -8
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Solve for X.<span>
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