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3 years ago

Hello someone pls help soon!!!

Mathematics

1 answer:

sdas [7]3 years ago

7 0

Answer:

Yes

Step-by-step explanation:

Because In high school, you become of age to start dirving and get your lisense in collage you have had your lisense for a while

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HELP ASAP !!!!!!!! PLEASE

umka21 [38]

Answer:

Step-by-step explanation:

Using the formula:

$P = 2 (a+b)$
where P is the perimeter, b is base and a is side lengths

Solving for a:

$a = \frac{P}{2} - b$

$a = \frac{70}{2}-20$

$a =15$

7 0

3 years ago

Which is the equation of a hyperbola with directrices at x = ±3 and foci at (4, 0) and (−4, 0)?

Alex Ar [27]

Answer:

$\frac{x^2}{12}-\frac{y^2}{4}=1$

Step-by-step explanation:

Since our foci are located on the x-axis, then our major axis is going to be the horizontal transverse axis of the hyperbola:

Formula for hyperbola with horizontal transverse axis centered at origin

$\frac{x^2}{a^2}-\frac{y^2}{b^2}=1$
Directrices -> $x=\pm\frac{a^2}{c}$
Foci -> $(\pm c,0)$ where $a^2+b^2=c^2$
$a>b$

Since we are given our directrices of $x=\pm3$ and foci of $(\pm4,0)$ , then we can set up the directrices equation to solve for $a^2$ :

$x=\pm\frac{a^2}{c}\\ \\\pm3=\pm\frac{a^2}{4}\\ \\12=a^2$

Now we can determine $b^2$ to complete our equation for the hyperbola:

$a^2+b^2=c^2\\\\12+b^2=4^2\\\\12+b^2=16\\\\b^2=4$

Therefore, our equation for our hyperbola is $\frac{x^2}{12}-\frac{y^2}{4}=1$

5 0

2 years ago

Dominique buys $14.95 worth of gasoline for her car. If the gas station charges $1.43 per gallon, how many gallons did she get?

Zolol [24]

Answer:

$10.45

Step-by-step explanation:

14.95 divided by 1.43 = 10.50

5 0

3 years ago

Read 2 more answers

3(10m+3z+12) for m=3 and z=6

Kryger [21]

180 is the answer 3(30+18+12) distributive property gives you 90+54+36 which equals 180

5 0

4 years ago

Read 2 more answers

4 times the difference of Y and 2 is the same as twice why need to write this as an equation....

Salsk061 [2.6K]

Maybe try 4(2-y)=2y for an equation

4 0

3 years ago