3 years ago

Question #7

Mathematics

1 answer:

stellarik [79]3 years ago

7 0

The train travels 70 miles per hour

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A phone company offers two monthly plans. Plan A costs $21 plus an additional $0.11 for each minute of calls. Plan B costs $29 p

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$121 and $12 ok isn't available in your ma er bishal bishal bishal

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3 years ago

Find approximate solution for the equation in the interval 0<_ x <_ pi. round to three decimal places. tanx=5 sin x

timofeeve [1]

Answer:

d. 0, 1.369

Step-by-step explanation:

Given:

The equation is: $\tan x =5\sin x................(0\leq x\leq \pi)$

Adding $-5\sin x$ on both sides, we get

$\tan x - 5\sin x=0$

Using the identity $\tan x=\frac{\sin x}{\cos x}$ , we get

$\frac{\sin x}{\cos x}-5\sin x=0$

Factoring out $\sin x$ , we get

$\sin x(\frac{1}{\cos x}-5)=0\\\\\therefore \sin x=0\ or\ \frac{1}{\cos x}-5=0\\\\x=\sin^{-1} (0)\ or\ \cos x=\frac{1}{5}\\\\x=0\ or\ x=\cos^{-1} (\frac{1}{5})\\\\x=0\ or\ x=1.3694\approx 1.369(\textrm{Round to 3 decimal places})$

Therefore, the solution of the given equation is either 0 or 1.369.

The correct choice is d.

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3 years ago

What is the relationship between Za and Zb / choose 1 answer.

Stolb23 [73]

Answer:

they are supplementary angles since they add up to 180

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What is the mode of the data? A.2 B.3 C.4 D.7

goldenfox [79]

Answer:

the mode would be 2 since it is the most common number used

Step-by-step explanation:

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3 years ago

A) A square has an area of 121 cm^2. What is the length of each side?

tia_tia [17]

A square has equal sides. To find the area, you multiply the length and the height.
x*x=121
x^2=121
x=11
The length of each side is 11

A square has equal sides. To find the perimeter, you add all the sides together.
x+x+x+x=28
4x=28
x=7
The length of each side is 7

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3 years ago