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Effectus [21]
3 years ago
14

Tan2 x + sec2x= 1 for all values of x true or false

Mathematics
2 answers:
NeX [460]3 years ago
8 0
It’s false. You cannot prove it because it is not an identity
Rama09 [41]3 years ago
5 0

Answer:

true

Step-by-step explanation:

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Please work out -80 ÷ -8​
Daniel [21]

Answer:

10

Step-by-step explanation:

-80 / -8 = 10

the negatives cancel each other out

3 0
3 years ago
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Lillian but for hairbrushes at $3.99 each.She had a coupon for $1 off. Her mum paid for half of the remaining cost.Evaluate a nu
Savatey [412]
She will pay $1.50 for the hairbrush and her mum paid $1.50 as well
3 0
3 years ago
493 times 5 minus 76<br><br> Also if any of you watch impractical jokers who is your favorite
Alex

Answer:

2389

Joe Gatto

Step-by-step explanation:

6 0
3 years ago
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Find an equation for the line below. Thanks !
daser333 [38]

Answer:

\huge\boxed{y=\frac{1}{4}x + \frac{13}{4}}

Step-by-step explanation:

In order to find the equation to this line, we need to note that we see two points on this graph. Using these two points, we can use them to find the slope of the graph and use one to find the y-intercept.

We know that the slope of a line is defined by \frac{\Delta y}{\Delta x} (change in y / change in x). Therefore, we can use our two points that we know - (-5, 2) and (3, 4) to find the slope.

The change in y is 4 - 2 = 2, and the change in x is 3 - (-5) = 3+5= 8. Therefore, our slope is \frac{2}{8} = \frac{1}{4}.

Now that we know our slope, our equation in slope-intercept form looks something like this.

y = \frac{1}{4}x + b

However, we still have b to solve for. We can solve for this by substituting a point we already know into the equation. Let's substitute (3, 4) inside.

  • 4 = \frac{1}{4} \cdot 3+b
  • 4 = \frac{3}{4} + b
  • b = \frac{16}{4}- \frac{3}{4}
  • b = \frac{13}{4}

So now we know that the y-intercept is \frac{13}{4}. Plugging that into our equation finishes it off, leaving our final equation to be y = \frac{1}{4}x + \frac{13}{4}.

Hope this helped!

4 0
2 years ago
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2+{8−2[32+5(1+2)]} please solve this problem
stich3 [128]

<u>The answer is -84.</u>

Steps:

1. Follow PEMDAS as seen in order of operations.

2: Calculate within parenthesis.

3: Multiply & Divide (Left to right.)

4: Add & Subtract (Left to right.)

5: Multiply & Divide (Left to right. again.

6: Add & Subtract (Left to right.) again.

7: Complete. = -84.


6 0
3 years ago
Read 2 more answers
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