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3 years ago

During a concert the temperature should not rise above 40 degrees celsius.

1 answer:

4 0

Converting Celsius to Fahrenheit is really multiplying c by 1.8 and then adding 32. so, 40•1.8= 72, 72+32= 104!!!!
but it's asking how many degrees in Celsius is it below 40°. using the given formula, C= 35

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it takes 10.4 hours to receive a basic flying license. A new license training method using Computer Aided Instruction (CAI) has

Anastasy [175]

Answer:

Test statistic (t) = 0.625

Step-by-step explanation:

Step(i):-

mean of the Population(μ) = 10.4 hours

Sample mean (x⁻) = 10.7 hours

Standard deviation of the sample( S) = 1.44

The level of significance (α= 0.1

Sample size 'n' = 9

Degrees of freedom = n-1 = 9-1 =8

Step(ii):-

Test statistic

$t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }$

$t = \frac{10.7 -10.4}{\frac{1.44}{\sqrt{9} } } =0.625$

8 0

3 years ago

Find a polynomial f(x) of degree 3 with real coefficents and following zeros. -4,4i

ElenaW [278]

Answer:

$f(x)=x^3 +4x^2 +16x +64$

Step by step explanation:

$\text{Given that, two roots are}~ -4~ \text{and}~ 4i.\\\\\text{Let,}\\\\~~~~~~~x = 4i\\\\\implies x^2 = 16i^2~~~~~~~;[\text{Square on both sides}]\\\\\implies x^2 = -16~~~~~~~~;[i^2 = -1]\\\\\implies x^2 +16 = 0\\\\\text{So,}~ x^2 +16~ \text{ is a factor of the 3 degree polynomial}.\\ \\ \text{The polynomial is ,}\\\\ f(x) = (x+4)(x^2 +16)\\\\~~~~~~~=x^3 +16x +4x^2 +64\\\\~~~~~~~=x^3 +4x^2 +16x +64$

7 0

2 years ago

If -3(2-x)=4-(3x+1) what is x ?

olga2289 [7]

Answer:

x=2

Step-by-step explanation:

-3(2-x)=4-(3x+1)

-6+3x=4-3x-1

-3/3=-6x/3

2=x

8 0

3 years ago

How many times does 50 go into 800

VMariaS [17]

It's really easy just divide 800/50
the answer is 16 times

8 0

3 years ago

Yo can someone help me with this please and please ex plain

Novay_Z [31]

Answer:

c) The car dealer's business is expanding rapidly.

Step-by-step explanation:

You can tell because they're selling more and more every month.

7 0

3 years ago