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3 years ago

Which equation is true when k=-15

Mathematics

1 answer:

dimaraw [331]3 years ago

5 0

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Use the FOIL Method to find (k+5)(k−1).

Elenna [48]

Answer:

(k+5)(k−1)=k2+4k−5

Step-by-step explanation

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3 years ago

Read 2 more answers

Evaluate: .25 (1.2 x 3 - 1.25) + 3.45

iragen [17]

The order to us solve is:

Parentheses
Multiplication
Sum and subtraction

Let's go:

$25(1.2\times 3 - 1.25) + 3.45\\25(3.6-1.25)+3.45\\25\times 2.35 + 3.45\\58.75+3.45\\62.2$

Therefore, the result is 62.2.

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3 years ago

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Which expression is equivalent to cot t sec t?

Solnce55 [7]

Answer: $csc(t)$

Step-by-step explanation:

Alright, lets get started.

The given expression is given as :

$cot( t) \times sec (t)$

We know quotient identity as :

$cot(t)=\frac{cos(t)}{sin(t)}$

Similarly, we know reciprocal identity as :

$sec(t)=\frac{1}{cos(t)}$

lets plug the value of cot and sec in given expression

$\frac{cos(t)}{sin(t)} \times \frac{1}{cos(t)}$

cos will be cancelled, remaining will be

$\frac{1}{sin(t)}$

Using reciprocal identity again, that will equal to :

$csc(t)$ ................... Answer (A)

8 0

3 years ago

Will give brainliest.

Dennis_Churaev [7]

Pretty sure it's A. (X times .5 equals Y)

8 0

3 years ago

Hey can you please help me posted picture of question

fredd [130]

The discriminant can be determined from the number of roots of the graph.

If Disc> 0, the function has two distinct roots
If Disc = 0, the function has a repeated root
If Disc < 0, the function has no real root.

Since the given graph has no real root, i.e. it does not cross x-axis at any point, so we can say that the discriminant of the given function is negative.

So the answer to this question is option C

8 0

4 years ago