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3 years ago

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

Mathematics

2 answers:

romanna [79]3 years ago

8 0

The answer would be k^2 + 4K -5

Elenna [48]3 years ago

4 0

Answer:

(k+5)(k−1)=k2+4k−5

Step-by-step explanation

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2. Jacob Thomas had a deposit of two checks: $341.79 and $17.96;

Novosadov [1.4K]

Answer:

$938.66

Step-by-step explanation:

Cheque = $341.79 + $17.96 =$359.75

Paper Currency:

=(35 X $1)+(17 X $5)+(44 X $10)

= 35+85+440

=$560

Coins

=(54 X $0.25)+(36 X $0.10)+ (32 X $0.05) + (21 X $0.01)

=13.5+3.6+1.6+0.21

=$18.91

Total Cash Deposit = Paper Currency + Coins

=$560+18.91

=$578.91

Therefore, Jacob's Total Deposit

= Total Cheque Deposit+ Total Cash Deposit

=$359.75+578.91

=$938.66

5 0

3 years ago

Is 25.9578 a irrational

ICE Princess25 [194]

You mean is it an irrational number?

No, it's not!
An irrational number is a number that canNOT be expressed as a fraction, and this number can be easily represented as a fraction: such as this one:
$\frac{259578}{10000}$

8 0

3 years ago

Find the volume of a cone with a height of 7yd and a base diameter of 6yd . use the value 3.14 for π , and do not do any roundin

yarga [219]

I think the volume of the cone is 65.94yd because the radius is 3 and the height is 7 also 3 to the second power equals 9 then 3.14 multiplied by 9 equals 28.26 and finally 28.26 multiplied by 7/3 equals 65.94

V=3.14 x r^2 h/3
V=3.14 x 3^2 7/3

3 0

3 years ago

What is the value of x to the nearest degree?

Marrrta [24]

Answer:

Step-by-step explanation:

This is right triangle trig. The side opposite the x is 8, and the side adjacent to the x is 5. The tangent ratio uses those sides. We need to find what angle has a tangent of 8/5. To do this, make sure your calculator is in degree mode. Then hit "2nd" then tan and you will see tan with a little -1 and a parenthesis. Enter 8/5 and hit "enter" and you will get an angle measure of 57.9946. Rounded to the nearest degree this is 58 degrees. That's your answer!

8 0

3 years ago

Read 2 more answers

Find the x-values that are solutions of the equation 5cot^2x-15=0

julia-pushkina [17]

First solve for the trig function 'cot'
$cot^2 x = \frac{15}{5} = 3$

Next take the sqrt of both sides (include plus/minus)
$cot x = \pm \sqrt{3}$

Now take reciprocal of both sides, this will change trig function to 'tan'
(cot = 1/tan)

$tan x = \pm \frac{1}{\sqrt{3}} = \pm \frac{\sqrt{3}}{3}$

Finally use the unit circle or inverse tan on your calculator to find x.
There will be 4 solutions, one for each quadrant.

$x = \frac{\pi}{6}, \frac{5\pi}{6}, \frac{7\pi}{6}, \frac{11\pi}{6}$

3 0

3 years ago