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AlekseyPX
3 years ago
14

The leaning Tower of Pisa is 84.32 meters (m) long.

Mathematics
1 answer:
dlinn [17]3 years ago
4 0

Answer:

67.32m

Step-by-step explanation:

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Which is the correct answer ?????
Damm [24]
<h3>Answer:  True</h3>

Explanation:

Technically you could isolate any variable you wanted, from either equation. However, convention is to pick the variable in which isolating it is easiest, and most efficient.

The key thing to look for is if there's a coefficient of 1. This is found in the second equation for the y term. Think of -4x+y = -13 as -4x+1y = -13. Due to the coefficient of 1, when solving for y we won't involve messy fractions.

If you were to solve for y, then you'd get y = 4x-13, which is then plugged in (aka substituted) into the first equation. That allows you to solve for x. Once you know x, you can determine y.

6 0
1 year ago
Pls help i only have 2 minutes!!!!!!!!!!!!!!
umka21 [38]

Answer:

40 + ( -63) is less

Step-by-step explanation:

.... .....

4 0
3 years ago
Read 2 more answers
(a) find the general solution to y^{\,\prime\prime} + 3 y^{\,\prime} = 0. give your answer as y = . . . \ . in your answer, use
KengaRu [80]
We want to solve
y'' + 3y' = 0

Solve the indicial equation.
m² + 3m = 0
m(m + 3) = 0
m = 0 or m = -3

The basic solutions are e⁰=1 and e^{-3x}.

Answer:
The general solution is
y(x) = c_{1} + c_{2}e^{-3x}

4 0
3 years ago
A regression analysis between weight (y in pounds) and height (x in inches) resulted in the following least squares line: ŷ = 13
Lunna [17]

Answer:

y=6x +135

And for this case the interpretation for the slope would be that for every unit that the height in inches increase then the weight in pounds increase 6 units.

For the intercept of 135 represent the amount initial amount of weight for the scale.

Step-by-step explanation:

We assume that they use least squares in order to create the regression equation

For this case we need to calculate the slope with the following formula:

m=\frac{S_{xy}}{S_{xx}}

Where:

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}

With these we can find the sums:

And the slope would be:

m=6

The means for x and y are given by:

\bar x= \frac{\sum x_i}{n}

\bar y= \frac{\sum y_i}{n}

And we can find the intercept using this:

b=\bar y -m \bar x

For this case we know that the line adjusted is:

y=6x +135

And for this case the interpretation for the slope would be that for every unit that the height in inches increase then the weight in pounds increase 6 units.

For the intercept of 135 represent the amount initial amount of weight for the scale.

3 0
4 years ago
The amount of the tip percent
Kaylis [27]

Answer:

16.45

Step-by-step explanation:

To find the tip we take the bill and multiply by the tip percent

tip = bill * tip percent

tip = 109.66 * 15%

     = 109.66* .15

     = 16.449

We round to the nearest cent

      = 16.45

7 0
4 years ago
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