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anastassius [24]
3 years ago
15

Noah has a toy that requires 4 batteries. Noah buys batteries with a chance of lasting more than 2/3 hours, and he wants to esti

mate the probability that at least one of the 4 batteries in his toy will go dead before 15 hours are up. Noah wants to use a spinner with equal-sized sections to represent each battery’s chance of lasting more than 15 hours. He will use red sections to represent a battery that dies before 15 hours are up and green sections to represent batteries that last more than 15 hours. How many of each section should Noah have in his spinner? Explain.
Mathematics
2 answers:
Oksi-84 [34.3K]3 years ago
7 0

Answer:

4

Step-by-step explanation:

This is because he has 4 total batteries and he wants to know when they will die.

Vikki [24]3 years ago
6 0

Answer:

I Don't Know

Step-by-step explanation:

I am still in 7th grade, I haven't learned this yet. I need the points

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Solve for x enter the solutions from the least to greatest x2+7=43 lesser x= Greater x=
Snowcat [4.5K]

Answer:

x = ±6

Step-by-step explanation:

Step 1: Write out equation

x² + 7 = 43

Step 2: Subtract 7 on both sides

x² = 36

Step 3: Square root both sides

√x² = √36

x = ±6

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When a flash of lightning occurs, the number of seconds elapsed until thunder is heard can be used to approximate the distance f
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Pretty sure its C :)
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The ratio of the measures of the three angles is 4:5:6. Find the measure of each angle of the triangle
Furkat [3]

Answer:

Let the number be x.

Given the statement: The ratio of the measure of the three angles is, 4 : 5 : 6.

Then, the angles be 4x , 5x and 6x respectively.

We know that: The sum of all the measures of angles is 180 degree.

then;

4x+5x+6x = 180^{\circ}

Combine like terms;

15x = 180^{\circ}

Divide by 15 both sides we get;

x = 12

Then, the measure of each angle of triangle:

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4 0
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Ivahew [28]
ANSWER

x=\frac{2-\sqrt{10}} {3}

or

x=\frac{\sqrt{10}+2} {3}

We have

3x^2-4x-2=0

Since we cannot factor easily, we complete the square.

Adding 2 to both sides give,

3x^2-4x=2

Dividing through by 3 gives

x^2-\frac{4}{3}x= \frac{2}{3}

Adding (-\frac{2}{3})^2 to both sides gives

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The expression on the Left Hand side is a perfect square.

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Splitting the plus or minus sign gives

x=\frac{2- \sqrt{10}} {3}

or

x=\frac{\sqrt{10}+2} {3}
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