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3 years ago

At lunch time, Brianne often borrows money from her friends to buy

Mathematics

1 answer:

tatiyna3 years ago

6 0

Answer:

Step-by-step explanation:

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What is the science behind global warming in labs

tankabanditka [31]

Including adding carbon.

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3 years ago

Calculate the value of a savings account in three years if

Tems11 [23]

Answer:

SI = prt / 100

SI = 100 x .02 x 3

SI = 6

Amount = 100 + 6 = 106

4 0

4 years ago

Halley’s comet has an elliptical orbit with the sun at one focus. The eccentricity of the orbit is approximately 0.97. The lengt

kherson [118]

so the sun is one of the foci, and we have an eccentricity of 0.97. So the ellipse will look more or less like the picture below.

$\bf \textit{ellipse, horizontal major axis}\\\\\cfrac{(x- h)^2}{ a^2}+\cfrac{(y- k)^2}{ b^2}=1\qquad \begin{cases}center\ ( h, k)\\vertices\ ( h\pm a, k)\\c=\textit{distance from}\\\qquad \textit{center to foci}\\\qquad \sqrt{ a ^2- b ^2}\\eccentricity\quad e=\cfrac{c}{a}\end{cases}\\\\-------------------------------\\\\\begin{cases}h=0\\k=0\\a=35.88\\e=0.97\end{cases}\implies \cfrac{(x-0)^2}{35.88^2}+\cfrac{(y-0)^2}{b^2}=1\\\\-------------------------------$

$\bf e=\cfrac{c}{a}\implies 0.97=\cfrac{c}{35.88}\implies \boxed{34.8036=c} \\\\\\ c=\sqrt{a^2-b^2}\implies b=\sqrt{a^2-c^2}\implies b=\sqrt{35.88^2-34.8036^2} \\\\\\ \boxed{b\approx 8.72}\\\\ -------------------------------\\\\ \cfrac{(x-0)^2}{35.88^2}+\cfrac{(y-0)^2}{8.72^2}=1\implies \cfrac{x^2}{1287.3744}+\cfrac{y^2}{76.0384}=1$

5 0

4 years ago

Write the quadratic equation whose roots are 1 and -1, and whose leading coefficient is 4

suter [353]

Answer:

y = 4x² - 4

Step-by-step explanation:

y = a(x - x₁ )(x - x₂)

Plug in the knowns

y = 4(x - 1)(x + 1)

expand

y = 4(x² - 1)

y = 4x² - 4

8 0

4 years ago

3x-9=3(x-3) no solution, one solution, infinitely many solutions

Vesna [10]

Answer:

Infinitely many solutions

Step-by-step explanation:

3x - 9 = 3(x - 3)

Distribute;

3x - 9 = 3x - 9

Infinitely many solutions

3 0

3 years ago