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2 years ago

1.5 billion seconds in scientific notations

Mathematics

1 answer:

Trava [24]2 years ago

8 0

Answer:

1.2378×104

Step-by-step explanation:

The number 10 is called the base because it is this number that is raised to the power n. Although a base number may have values other than 10, the base number in scientific notation is always 10.

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What is the value of w in this equation? <br><br> 15 + w = 75

Anton [14]

Answer:

$w=60$

Step-by-step explanation:

$15+w=75$

Subtract 15 from both sides of the equation.

$15+w-15=75-15$

$w=60$

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3 years ago

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Show a number bond to represent Arabella's area model and represent the total length using the distributive property

Rom4ik [11]

Where's the area model?

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4 years ago

The question is asking me to “Factor each trinomial”

stealth61 [152]

Hello, No need.

Just leave the answer as

$(x + 1)(x -2)$

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3 years ago

A rocket is shot off from a launcher. The accompanying table represents the height of the rocket at given times, where x is time

galben [10]

Answer:

The height at time of 12.1 seconds is approximately 729.2562 feet

Step-by-step explanation:

The general form of the quadratic regression equation is y = A + Bx + Cx²

The quadratic regression formula is given as follows;

$B = \dfrac{S_{xy}S_{x'x'}-S_{x'y}S_{xx'}}{S_{xx}S_{x'x'} -(S_{xx'})^2}$

$C = \dfrac{S_{x'y}S_{xx}-S_{xy}S_{xx'}}{S_{xx}S_{x'x'} -(S_{xx'})^2}$

$A = \bar y - B \bar x - C \bar {x^2}$

$S_{xx} = \Sigma (x_i - \bar x)^2$

$S_{xy} = \Sigma (x_i - \bar x)(y_i - \bar y)$

$S_{xx'} = \Sigma (x_i - \bar x)(x^2_i - \bar {x^2})$

$S_{x'x'} = \Sigma (x^2_i - \bar {x^2})^2$

$S_{x'y} = \Sigma (x^2_i - \bar {x^2})(y_i - \bar {y})$

Solving using an online quadratic regression calculator, gives;

A = 2.5643259

B = 246.6374865

C = -15.41986006

Substituting gives;

y = 2.5643259 + 246.6374865·x -15.41986006·x²

When time, x = 12.1, we have;

y = 2.5643259 + 246.6374865×12.1 -15.41986006×12.1²≈ 729.2562 feet

The height at time of 12.1 seconds ≈ 729.2562 feet.

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3 years ago

The Ruiz family is saving to buy a new house. They have $5,000 to start a new savings account that has an interest

myrzilka [38]

This answer is (B) $5262.

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3 years ago

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