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2 years ago

Noam solved the equation for k using the following calculations

Mathematics

2 answers:

Mandarinka [93]2 years ago

6 0

The mistake here was the .6 was treated as .06. Adding 7.6 to 10.35 really gives 17.95.

ANEK [815]2 years ago

4 0

Answer:

He should have subtracted 7.6 instead of adding it.

Step-by-step explanation:

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Mel drives a bus 39 weeks in a year.

zlopas [31]

Answer:

11,622

Step-by-step explanation:

39 × 298 = 11,622

Have a good day!

7 0

3 years ago

If a1 = 8 and an = an-1 + 5 then find the value of a5.

Nimfa-mama [501]

Step-by-step explanation:

A1=8

A2=A1+5 plug 8 into A1 here. After getting the value, put into next equation. And repeat until you get A5

A3=A2+5

A4=A3+5

A5=A4+5

5 0

2 years ago

Find the value of sin(a/2) if cosa= 12/13<br>

daser333 [38]

Answer: sin $\frac{a}{2}$ = ± $\frac{1}{\sqrt{26} }$

Step-by-step explanation:

We very well know that,

cos2A=1−2sin²A

⟹ sinA = ± $\sqrt{(1-} \frac{cos2A}{2} )$

As required, set A = $\frac{a}{2}$ & cos a= $\frac{12}{13}$ ,thus we get

sin $\frac{a}{2}$ =± $\sqrt{\frac{1-cos a}{2} }$

∴ sin $\frac{a}{2}$ =± $\sqrt{\frac{1-\frac{12}{13} }{2} }$ = ± $\frac{1}{\sqrt{26} }$

since ,360° < $\frac{a}{2}$ <450°

,180° < $\frac{a}{2}$ <225°

Now, we are to select the value with the correct sign. It's is obvious from the above constraints that the angle a/2 lies in the III-quadrant where 'sine' has negative value, thus the required value is negative.

hope it helped!

5 0

2 years ago

Need help with this geometry problem hard for me smart people only 100% pls fast due now

34kurt

Answer:

x = 30°

Step-by-step explanation:

We know that the sum of all of the interior angles of a triangle is 180°, therefore, we can write the following equation:

x + 2x + 3x = 180

6x = 180

x = 30°

8 0

3 years ago

Differentiate y= ln l 1+t-t^3 l

lbvjy [14]

Y = ln |1 + t - t^3| = (1 - 3t^2)/(1 + t - t^3)

4 0

3 years ago