All categories

3 years ago

I need help please

Mathematics

2 answers:

Paul [167]3 years ago

6 0

Answer:

Step-by-step explanation:

55+71=126

180-126=54

Yuki888 [10]3 years ago

5 0

The answer for this is 54

You might be interested in

Which equation shows the variable terms isolated on one side and the constant terms isolated on the other side for the equation

olchik [2.2K]

Answer: x= 1

Step-by-step explanation: solve for x by simplifying both sides of the equation, then isolating the variable.

7 0

3 years ago

Find a rational number that is between 9.5 and 9.7

Luba_88 [7]

9.5000032 is one such number

3 0

3 years ago

Read 2 more answers

How do you simplify sin 4 theta using the double angle theory?

S_A_V [24]

Double angle formulae involve trigonometric functions of double angles and in order to get its value you must consider the following:
-derive the double angle formula from additional formula
-write the formula for the angle in alternative form
-use the formula to write trigonometric expressions in different forms
-use the formula in the solution of trigonometric equations

And the answer would be 4sin(theta)cos(theta)cos(2theta)

3 0

3 years ago

Find cos(2*ABC) 100POINTS

juin [17]

Answer:

$-\dfrac{7}{25}$

Step-by-step explanation:

<u>Trigonometric Identities</u>

$\cos(A \pm B)=\cos A \cos B \mp \sin A \sin B$

<u>Trigonometric ratios</u>

$\sf \sin(\theta)=\dfrac{O}{H}\quad\cos(\theta)=\dfrac{A}{H}\quad\tan(\theta)=\dfrac{O}{A}$

where:

$\theta$ is the angle
O is the side opposite the angle
A is the side adjacent the angle
H is the hypotenuse (the side opposite the right angle)

Using the trig ratio formulas for cosine and sine:

$\cos(\angle ABC)=\dfrac{3}{5}$

$\sin(\angle ABC)=\dfrac{4}{5}$

Therefore, using the trig identities and ratios:

$\begin{aligned}\implies \cos(2 \cdot \angle ABC) & = \cos(\angle ABC + \angle ABC)\\\\& = \cos (\angle ABC) \cos (\angle ABC) - \sin(\angle ABC) \sin (\angle ABC)\\\\& = \cos^2(\angle ABC)-\sin^2(\angle ABC)\\\\& = \left(\dfrac{3}{5}\right)^2-\left(\dfrac{4}{5}\right)^2\\\\& = \dfrac{3^2}{5^2}-\dfrac{4^2}{5^2}\\\\& = \dfrac{9}{25}-\dfrac{16}{25}\\\\& = \dfrac{9-16}{25}\\\\& = -\dfrac{7}{25} \end{aligned}$

7 0

2 years ago

Read 2 more answers

The distance from first base to third base on a baseball diamond is 1.4 times the distance from home plate to third base, which

Elina [12.6K]

The distance across the diamond is 114.6 feet should be the answer

8 0

3 years ago

Read 2 more answers