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Anarel [89]
3 years ago
10

Add (1.3t3 + 0.4t2 – 24t) + (8 – 18t + 0.6t2) For each term in the second polynomial, enter the letter showing where that term s

hould be placed to add the polynomials vertically.
Mathematics
1 answer:
nignag [31]3 years ago
8 0

Answer:

(1.3t^3 + 0.4t^2 - 24t) + (8 - 18t + 0.6t^2) = 1.3t^3 + t^2 -42t  + 8

Step-by-step explanation:

Given

(1.3t^3 + 0.4t^2 - 24t) + (8 - 18t + 0.6t^2)

Required

Solve

We have:

(1.3t^3 + 0.4t^2 - 24t) + (8 - 18t + 0.6t^2)

Collect like terms

1.3t^3 + 0.6t^2 + 0.4t^2 - 24t- 18t  + 8

1.3t^3 + t^2 -42t  + 8

So:

(1.3t^3 + 0.4t^2 - 24t) + (8 - 18t + 0.6t^2) = 1.3t^3 + t^2 -42t  + 8

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Rewrite<br> 5 exponent 4 multiplied by 2 exponent 4 over 10 slash exponent 3 <br> as a single power.
Hitman42 [59]

Answer:

thx for the points

Step-by-step explanation:

i like points

good luck on your maths

7 0
2 years ago
Factorise fully. <br> X^2 +6x+5
dimaraw [331]
x^2+6x+5=\\\\x^2+x+5x+5=\\\\x(x+1)+5(x+1)=\\\\(x+1)(x+5)
5 0
3 years ago
Read 2 more answers
A factory makes propeller drive shafts for ships. A quality assurance engineer at the factory needs to estimate the true mean le
borishaifa [10]

Answer:

1000-1.96\frac{2}{\sqrt{4}}=998.04    

1000+1.96\frac{2}{\sqrt{4}}=1001.96    

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

Solution to the problem

The confidence interval for the mean is given by the following formula:  

\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}   (1)  

Since the Confidence is 0.95 or 95%, the value of \alpha=0.05 and \alpha/2 =0.025, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.025,0,1)".And we see that z_{\alpha/2}=1.96

Now we have everything in order to replace into formula (1):

1000-1.96\frac{2}{\sqrt{4}}=998.04    

1000+1.96\frac{2}{\sqrt{4}}=1001.96    

5 0
3 years ago
Please help i can’t figure this out!!!!!
solong [7]

Answer:

Step-by-step explanation:

8 0
3 years ago
Help me asap please!!
schepotkina [342]

Answer:

y = 1.6 x

y = 24

Step-by-step explanation:

The general equation of a direct variation is

y = k x

In this case

x = 10

y = 16

y = k*x

16 = 10*k

16/10 =  k

k = 1.6

y = 1.6x

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

Let x = 15

y = 1.6 * 15

y = 24

7 0
3 years ago
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