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4 years ago

Suraji took a slice of pizza form the freezer and put it in the oven.

Mathematics

1 answer:

julia-pushkina [17]4 years ago

8 0

Answer

8 degrees c per min

Step-by-step explanation:

If you look at the graph

1 min= to 2 c

2 min=to 10 c

10-2=8

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Find the roots of the equation x ^ 2 + 3x-8 ^ -14 = 0 with three precision digits

scoray [572]

Answer:

Step-by-step explanation:

Given quadratic equation:

$x^{2} + 3x - 8^{- 14} = 0$

The solution of the given quadratic eqn is given by using Sri Dharacharya formula:

$x_{1, 1'} = \frac{- b \pm \sqrt{b^{2} - 4ac}}{2a}$

The above solution is for the quadratic equation of the form:

$ax^{2} + bx + c = 0$

$x_{1, 1'} = \frac{- b \pm \sqrt{b^{2} - 4ac}}{2a}$

From the given eqn

a = 1

b = 3

c = $- 8^{- 14}$

Now, using the above values in the formula mentioned above:

$x_{1, 1'} = \frac{- 3 \pm \sqrt{3^{2} - 4(1)(- 8^{- 14})}}{2(1)}$

$x_{1, 1'} = \frac{1}{2} (\pm \sqrt{9 - 4(1)(- 8^{- 14})})$

$x_{1, 1'} = \frac{1}{2} (\pm \sqrt{9 - 4(1)(- 8^{- 14})} - 3)$

Now, Rationalizing the above eqn:

$x_{1, 1'} = \frac{1}{2} (\pm \sqrt{9 - 4(- 8^{- 14})} - 3)\times (\frac{\sqrt{9 - 4(- 8^{- 14})} + 3}{\sqrt{9 - 4(- 8^{- 14})} + 3}$

$x_{1, 1'} = \frac{1}{2}.\frac{(\pm {9 - 4(- 8^{- 14})^{2}} - 3^{2})}{\sqrt{9 - 4(- 8^{- 14})} + 3}$

Solving the above eqn:

$x_{1, 1'} = \frac{2\times 8^{- 14}}{\sqrt{9 + 4\times 8^{-14}} + 3}$

Solving with the help of caculator:

$x_{1, 1'} = \frac{2\times 2.27\times 10^{- 14}}{\sqrt{9 + 42.27\times 10^{- 14}} + 3}$

The precise value upto three decimal places comes out to be:

$x_{1, 1'} = 0.758\times 10^{- 14}$

5 0

3 years ago

Please help me out a soon as possible, thanks!

WITCHER [35]

Answer:

Step-by-step explanation:

i had this problem before so i know

7 0

3 years ago

According to a recent survey, Americans get a mean of 7 hours of sleep per night. A random sample of 50 students at West Virgini

Mamont248 [21]

Answer:

p-value = P(z < -1.5713) = 0.0581

Conclusion: Since the p-value is greater than 5%,

fail to reject.

The test results to not support the claim

Step-by-step explanation:

5 0

3 years ago

Eghh I'm so bad at Algebra >.< Help? The length of a rectangle is 9.7 cm more than 4 times the width. If the perimeter of

lina2011 [118]

L = 4w + 9.7
2l + 2w = 91.4
2(4w + 9.7) + 2w = 91.4
8w + 19.4 + 2w = 91.4
10w = 72
w = 72/10 = 7.2 cm
l = 4(7.2) + 9.7 = 38.5

Dimension = 38.5 by 7.2

Let x be the number of days for which the costs are the same, then
110 + 46x = 70 + 54x
54x - 46x = 110 - 70
8x = 40
x = 5
Therefore, it will take 5 days for the cost to be the same.

7 0

3 years ago

Terra Drive due north 44 Miles then East 422 miles. How far is Terra from her starting point

lilavasa [31]

Answer:

466 miles

Step-by-step explanation:

HOPE IT HELPS

MARK ME AS BRAINLIEST

FOLLOW ME

CORRECT ME IF IM WRONG

CARRY ON LEARNING

THANK YOU

7 0

3 years ago