3 years ago

What is the sum of 55 66

Mathematics

1 answer:

mezya [45]3 years ago

8 0

121 is the answer/sum.

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Sebastian solved the radical equation y + 1 = but did not check his solution. (y + 1)2 = y2 + 2y + 1 = –2y – 3 y2 + 4y + 4 = 0 (

jek_recluse [69]

Answer:

There are no true solutions to the equation

Step-by-step explanation:

The equation is

y+1=√-2y-3

Find y

Square both sides

(y+1)^2=(√-2y-3)^2

y^2+2y+1= -2y-3

y^2+2y+1+2y+3=0

y^2+4y+4=0

Solve quadratic equation by factorisation

we have

(y+2)(y+2)=0

y=-2

Check

y+1=√-2y-3

-2+1=√-2(-2)-3

-1=√4-3

-1=√1

-1=1

This is not true

5 0

3 years ago

Trigonometric identities assignment 4

kykrilka [37]

Answer:

Answer: choice D.

Step-by-step explanation:

Trigonometric Functions

We need to recall some properties and definitions of the trigonometric functions.

$\displaystyle \tan \theta=\frac{\sin\theta}{\cos\theta}$

$\displaystyle \sec \theta=\frac{1}{\cos\theta}$

We need to simplify the following expression:

$5\sin\theta\sec\theta$

Substituting the identity for the secant:

$\displaystyle 5\sin\theta\sec\theta=5\sin\theta.\frac{1}{\cos\theta}$

Operating:

$\displaystyle 5\sin\theta\sec\theta=5\frac{\sin\theta}{\cos\theta}$

Substituting the definition of the tangent:

$\displaystyle 5\sin\theta\sec\theta=5\tan\theta$

Correct choice D.

6 0

2 years ago

25.5 divided by 1.25

Artist 52 [7]

the answer is 20.4 and I hope this helps!

5 0

2 years ago

Can someone help me please ?!

riadik2000 [5.3K]

Answer:

yeah 13 is the right answerrrrr

7 0

2 years ago

25. Which is an example of an operation? A) 12 B) 6ab C) + D) y

nasty-shy [4]

Letter c is an operation.
Addition

8 0

3 years ago