The Kings Dominion Gold Pass costs $89. If you buy it the first week of

Mathematics

1 answer:

Eddi Din [679]3 years ago

7 0

Answer:

$75.65

Step-by-step explanation:

1 - .15 = .85 = 85% of the price is what you pay

89 • .85 = $75.65

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You are making a necklace that is 9 inches long. You use 6 beads for each inch. What integer is the change in your supply of bea

nydimaria [60]

To answer this question we first must know the definition of an integer. An Integer is a whole number. 1, 10, 100 are all integers. 1.3 and 0.75 are not. So now we must multiply the number of beads per inch by the total number of inches: The question states you use 6 beads for each inch. So 6 beads per inch multiplied by 9 inches is 54 beads. So your supply changes by 54 beads.

8 0

4 years ago

8.Find the value of c that makes the expression be a perfect square trinomial p^2-30p+c

Darina [25.2K]

Hope this is the right one.

Problem 8
p^2 - 30p + c
Step One
Take 1/2 of - 30
1/2 * -30 = - 15

Step 2
Square -15
(-15)^2 = 225
c = 225

Problem Nine
$\text{x = }\dfrac{ -b \pm \sqrt{b^{2} - 4ac } }{2a} 
$
a = 1
b = 4
c = -15
$\text{x = }\dfrac{ -4 \pm \sqrt{4^{2} - 4*1*(-15) } }{2*1}$
$\text{x = }\dfrac{ -4 \pm \sqrt{\text{16} + \text{60} } }{2}$

x = [-4 +/- sqrt(76)] / 2
x = [-4 +/- 2*sqrt19]/2
x = [-4/2 +/- 2/2 sqrt[19]
x = - 2 +/- sqrt(19)

x1 = - 2 + sqrt(19)
x2 = -2 - sqrt(19)

These two can be broken down more by finding the square root. I will leave them the way they are. It's just a calculator question if you want it to go into decimal form.

Problem Ten

a = 1
b = 4
c = -32

The discriminate is sqrt(b^2 - 4ac)
D = sqrt(b^2 - 4ac)
D = sqrt(4^2 - 4(1)(-32)
D = sqrt(16 - - 128)
D = sqrt(16 + 128)
D = sqrt(144)
D = +/- 12

Since D can equal + or minus 12 there must be 2 possible (and different) roots. As a matter of fact, this quadratic can be factored.
(x + 8)(x - 4) = y
But that' s not what you were asked for.
The discriminate is > 0 so the roots are going to be real.
Answer; The discriminate is > 0 so there will be 2 real different roots.

4 0

3 years ago

The tallest living man at one time had a height of 262 cm. The shortest living man at that time had a height of 68.6 cm. Heights

AysviL [449]

Answer:

more the z-score more will be the extreme. therefore tallest man has high extreme

Step-by-step explanation:

Formula for z-score: $\frac{X-\mu }{\sigma}$