1% = $4
$4 × 100 = $400
$4 × 18 = $72
Your answer is $400
Hi,
To find the cost before tax, we must find out how much the tax is. So we multiply 252 x .05 to get 12.6. So we know the tax was 12.6 dollars. Now all we have to do is subtract that from the total to get our answer. 252 - 12.6 = 239.4.
Have a great day!
Answer:
(3x + 7)(3x - 7)
Step-by-step explanation:
9x² - 49 ← is a difference of squares and factors in general as
a² - b² = (a + b)(a - b) , then
9x² - 49
= (3x)² - 7²
This is where the error has been made in that 9x has been used instead of 3x
= (3x + 7)(3x - 7) ← in factored form
Answer:
10red+10yellow+10blue+10green=40 cards
300/40= 7.5
each card should be statistically pulled 7.5 times. there are 10 yellow cards so a yellow card should be pulled 75 times.
Step-by-step explanation:
[tan(y) + cot (y)]/csc (y)
tan (y) = sin (y)/cos (y)
cot (y) = cos (y)/sin (y)
csc (y) = 1/sin (y).
Now rewrite the expression with the equivalent values
[sin (y)/cos (y) + cos (y)/sin (y) ] / [1/sin (y)]
1st, let's work the Numerator only = [sin (y)/cos (y) + cos (y)].
= [(cos² (y) + sin² (y)]/ [cos (y).sin(y)]
or (cos² (y) + sin² (y) = 1, →Numerator = 1/[cos (y).sin(y)]
Denominator = csc (y) = [1/sin (y)], Then:
N/D = 1/[cos (y).sin(y)] / [1/sin (y)] = [1 x sin (y)]/ [cos (y).sin (y)] = 1/cos (y)
Or 1/cos (y) = sec (y) Q.E.D
