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3 years ago

Evaluate the expression (x - y)^2 – x when x=3 and y=8 HELP PLEASE‼️‼️

Mathematics

2 answers:

vovikov84 [41]3 years ago

3 0

Answer:

Step-by-step explanation:

Step 1: fill in the equation

(3-8)^2-3

Step 2: simplify

= -5^2-3

= 25-3

Step 3: solve

= 22

Doss [256]3 years ago

3 0

Answer:

This would change into (9 - 64) - 3 which would change to, -55 - 3 = -58

Step-by-step explanation:

Hope this helped!

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Robert wrote a check to pay for his groceries. He thought he had $250 in his checking account but he actually had $200. Determin

marin [14]

Answer:

25%?

Step-by-step explanation:

6 0

3 years ago

Given cos theta = - 2/5 and sin theta < 0, find the six trigonometric values. I need help with this

Lena [83]

Answer:

$\sin\,\theta =-\frac{\sqrt{21} }{5}$

$\tan\,\theta =\frac{\sqrt{21} }{2}$

$\sec\,\theta = \frac{-5}{2}$

$cosec\,\theta =\frac{-5}{\sqrt{21} }$

$\cot\,\theta =\frac{2}{\sqrt{21} }$

Step-by-step explanation:

$\cos\theta =\frac{-2}{5}$

As both $sin\,\theta$ ,

$\theta$ lies in the third quadrant.

In the third quadrant,

$\sin\theta$

$\sin\,\theta =-\sqrt{1-\cos^2\,\theta} \\=-\sqrt{1-(\frac{-2}{5})^2 } \\\\=-\sqrt{1-\frac{4}{25} }\\\\=-\sqrt{\frac{25-4}{25} }\\\\=-\frac{\sqrt{21} }{5}$

$\tan\,\theta = \frac{\sin\,\theta}{\cos\,\theta }\\\\=\frac{\frac{-\sqrt{21} }{5} }{\frac{-2}{5} }\\\\=\frac{\sqrt{21} }{2}$

$\sec\,\theta =\frac{1}{\cos\,\theta }\\\\=\frac{1}{\frac{-2}{5} }\\\\=\frac{-5}{2}$

$\ cosec \,\theta = \frac{1}{sin\,\theta }\\\\=\frac{1}{\frac{-\sqrt{21} }{5} }\\\\=\frac{-5}{\sqrt{21} }$

$\cot\,\theta =\frac{1}{\tan\,\theta}\\\\=\frac{1}{\frac{\sqrt{21} }{2} }\\\\=\frac{2}{\sqrt{21} }$

3 0

3 years ago

Find the circumference

AleksAgata [21]

12 times 3.14 = 37.68 CM
C=D x 3.14

5 0

3 years ago

Read 2 more answers

I need to answer number one I will give as many points as I can for the question and I will mark brainiest

Grace [21]

Answer:

diagram is below
6, 11, 16, 21
s[n] = s[n-1] +5
26, 31, 36

Step-by-step explanation:

a) See below for the next diagram in sequence.

b) The numbers of straws in each diagram are ...

6, 11, 16, 21, ...

c) Each term is 5 more than the previous one, so the recursive rule for the number of straws is ...

s[1] = 6

s[n] = s[n-1] +5

d) The next three terms of the sequence are ...

..., 26, 31, 36, ...

6 0

3 years ago

I am thinking of a number.

Step2247 [10]

Step-by-step explanation:

Let the number Noah is thinking of be x,

=> x - 19 * 4 = 16

=> x - 19 = 16/4

=> x = 16/4 + 19

=> x = 4 + 19

=> x = 23

If my answer helped , please mark me as brainliest,

Thank you

4 0

4 years ago