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2 years ago

X - 7 = -1, what does 'x' equal?

Mathematics

1 answer:

antiseptic1488 [7]2 years ago

5 0

Answer:

x=6

Step-by-step explanation:

x-7=-1 add -1 to other side of the equation

x-6=0 add six to the zero

x=6

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If sin theta =3/7 and tan theta <0 what is the value of cos theta

Savatey [412]

Remember that

$\tan\theta=\dfrac{\sin\theta}{\cos\theta}$

So if $\sin\theta>0$ and $\tan\theta$ , then we know $\cos\theta$ .

Then use the Pythagorean identity to solve for cosine:

$\cos^2\theta+\sin^2\theta=1\implies\cos\theta=-\sqrt{1-\sin^2\theta}=-\dfrac{2\sqrt{10}}7$

7 0

2 years ago

Write the word form and the expanded form for each 1.7 & 5.62

Mrac [35]

1.7 = One and seven tenths
5.62 = Five and sixty-two hundredths

6 0

2 years ago

Read 2 more answers

What is the period, in seconds, of a simple pendulum of length 2 meters? Use the gravitational constant g = 9.8 m/s^2 and round

kirill [66]

Answer:

The period, in seconds to two decimal places is, 2.84 sec

Step-by-step explanation:

Using formula:

$T = 2 \pi \sqrt{\frac{l}{g}}$ ......[1]

where

T represents the Time period in second

l represents the length of the pendulum/

As per the statement:

Use the gravitational constant g = 9.8 m/s^2 , length of the simple pendulum(l) = 2 meters and $\pi = 3.14$

Substitute the given values we have;

$T = 2\cdot 3.14 \cdot \sqrt{\frac{2}{9.8}}$

⇒ $T = 6.28 \cdot \sqrt{\frac{1}{4.9}}=6.28 \cdot \frac{1}{2.21359436212}= \frac{6.28}{2.21359436212} = 2.83701481512$

Therefore, the period, in seconds to two decimal places is, 2.84 sec

8 0

3 years ago

SERIOUS ANSWERS ONLY PLZ

statuscvo [17]

Answer:

The standard deviation of the uniform distribution is:

σ=(b−a)/√12

U(3, 12)

σ = (12−3)/√12 = 9/√12 = 2.5981

U(80, 250)

σ = (250−80)/√12 = 170/√12 = 49.0748

U(4, 93)

σ = (93−4)/√12 = 89/√12 = 25.6921

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2 years ago

Ben is buying a tiny house. He will borrow $23,000 at a rate of 3% per year for 4 years. If the interest is compounded annually,

uranmaximum [27]

Answer:

$25,886.70

Step-by-step explanation:

8 0

2 years ago