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Lubov Fominskaja [6]

3 years ago

7

Mean starting salary was $93,000, with a standard deviation of $17,000. What is the 95% confidence interval for the average star

ting salary among all Harbor graduates?

1 answer:

SpyIntel [72]3 years ago

4 0

Answer:

1

Step-by-step explanation:

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Consider vectors u = ⟨2, 1⟩ and v = ⟨4, –1⟩ with the angle between them equal to 40°. What are the scalar projections uv and vu?

Crank

Answer: D. uv = 1.71 and vu = 3.16

Step-by-step explanation:

edge2020

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3 years ago

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sketch the curve represented by the parametric equations (indicate the orientation of the curve), write the corresponding rectan

pychu [463]

Answer:

Reduced equaton is $5x-3y+\frac{28}{3}=0$ .

Step-by-step explanation:

Given parametric equation is,

$x=3t-5$ and $y=5t+1$

Now, $x=3t-5\implies t=\frac{x+5}{3}$ substitute in second equation we get,

$y=\frac{5}{3}(x+5)+1$

$y=\frac{5}{3}x+\frac{28}{9}$

$\implies 5x-3y+\frac{28}{3}=0$

which is the corresponding rectangular equation after eliinating the parameter.

Now consider,

$y=\frac{5}{3}x+\frac{28}{9}$

Of which,

Slope : $\frac{5}{3}$

when,

$x=0, y=\frac{28}{9}=3.1$

$x=1, y=\frac{43}{9}=4.8; x=-1, y=\frac{13}{9}=1.4$

$x=2, y=\frac{58}{9}=6.4; x=-2, y=\frac{-2}{9}=-0.2$

$x=3, y=\frac{73}{9}=8.1; x=-3, y=\frac{-17}{9}=-1.8$

$x=4, y=\frac{88}{9}=9.8; x=-4, y=\frac{-32}{9}=-3.6$

$x=5, y=\frac{103}{9}=11.4; x=-5, y=\frac{-47}{9}=-5.2$

ans so on. Thus sketching th curve will look like given,

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3 years ago

A restaurant customer left $1.65 as a tip. The tax was 5% and the tip was 15% of the after tax cost. Which information is not

Alex Ar [27]

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3 years ago

(5x 4 – 3x 3 + 6x) – ( 3x 3 + 11x 2 – 8x)

BaLLatris [955]

5x⁴ - 3x³ + 6x) - (3x³ + 11x² - 8x)<span>

</span>Expand the second bracket by multiplying throughout by -1
5x⁴ - 3x³ + 6x - <span>3x³ - 11x² + 8x
</span>
Group like terms and simplify
5x⁴ - 3x³ - 3x³ - 11x² + 6x <span>+ 8x

</span>5x⁴ - 6x³ - <span>11x² + 14x</span>

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3 years ago

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How many yards are equal to 144 inches? (15 points)

Alexus [3.1K]

A. 4 yards hope this helped!!!

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3 years ago

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