All categories

3 years ago

What is the value of this expression when w = -5? w2 + 3w − 11

Mathematics

1 answer:

tresset_1 [31]3 years ago

5 0

Answer:

It is either -36 or 14

You might be interested in

Normal form [see attachment]

musickatia [10]

I just did one of these. I guessed that normal form is

$x \cos \phi + y \sin \phi - p = 0$

Here' that's

$x (\sqrt{3}/2) + y (1/2) - 10 = 0$

$\sqrt{3} x + y - 20 = 0$

Choice b

4 0

2 years ago

Express secΦ in terms of tanΦ

Sunny_sXe [5.5K]

Answer:

$\sec\theta=\sqrt{1+\tan^2\theta}$

Step-by-step explanation:

The trigonometric identity is :

$\sec^2\theta-\tan^2\theta=1\\\\or\\\\\sec^2\theta=1+\tan^2\theta$

We need to express secθ in terms of tanθ.

The above equation becomes,

$\sec\theta=\sqrt{1+\tan^2\theta}$

Hence, this is the required solution.

5 0

2 years ago

Element X is a radioactive isotope such that every 20 years, its mass

faust18 [17]

Answer:

12.1

Step-by-step explanation:

y=a(1/2)^t/h

270=410(1/2)^t/20

Divide both sides by 410

0.6585365854 = (1/2)^t/20

Log Both sides

Log(0.6585365854) / Log(1/2)

.6026645024= t/20

20 x .6026645024 = t

12.05329005 to the nearest tenth is 12.1 = t

3 0

2 years ago

Since I can not upload test can you answer this homework question for me thanks!

madam [21]

Answer:

The answer just so happens to be 6!

7 0

3 years ago

Need some assistance please

SVEN [57.7K]

Answer:I hope this could help !ut the answer is 4

Step-by-step explanation:

2 of them left so there are 4 left

8 0

3 years ago

Read 2 more answers