Which expressions are polynomials?

Mathematics

1 answer:

Katarina [22]2 years ago

4 0

I-1 is the polynomials because I is the linear term and 1 is the constant

You might be interested in

for positive acute angles A and B, it is known that cos A=20/29 and sin B=60/61. Find the value of sin(A+B) in simplest form.

Setler [38]

Answer:

$sin(A+B) = \frac{1431}{1769}$

Step-by-step explanation:

sin(A+B) = sinA cosB + cosA sinB ------(1)

$given : cos A = \frac{20}{29}, \ sinB = \frac{60}{61}$

First we will find sinA and cosB

$We \ know \ sin^2 A + cos^2A = 1\\\\sin^2 A = 1 - cos^2A = 1 - (\frac{20}{29})^{2} = \frac{841-440}{841} = \frac{441}{841}\\\\sinA =\frac{21}{29}$

$sin^2B +cos^2B = 1\\\\cos^2B = 1 - sin^2B = 1 - (\frac{60}{61})^2 = \frac{3721-3600}{3721} = \frac{121}{3721}\\\\cosB = \frac{11}{61}$

Substitute all values in (1)

$sin(A+B) =sinAcosB + cosAsinB$

$=(\frac{21}{29} \times \frac{11}{61} )+ (\frac{20}{29}\times \frac{60}{61})\\\\=\frac{231}{1769} + \frac{1200}{1769}\\\\= \frac{1431}{1769}$

3 0

3 years ago

May u help me dind the answer for this problem please

kati45 [8]

Answer:

The "shape" would be 784 Sq. Ft.

Step-by-step explanation:

Firstly, you need to find the area of the bottom "rectangle" by multiplying 20 by 14 to get 280 Sq. Ft. You then add 14 and 7 to get the length of the bottom of the upper "rectangle" to get 21. Now you continue in the steps of the bottom to multiply 24 by 21 to get 504 Sq. Ft. In the end, you add them together to get the total area to be 784 Sq. Ft.

5 0

3 years ago

-25m-10+10m+15<br> :) <br> pls help

kozerog [31]

Answer:

-5(3m-10

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

The measure of an angle is 42.89. What is the measure of its supplementary angle?

topjm [15]