Ask question

Ask question

All categories

3 years ago

15

No need to show work just need answer.

1 answer:

RideAnS [48]3 years ago

5 0

Can I have brainliest since u did t put a picture :)

You might be interested in

ONLY GET BRAINLIEST IF U R RIGHT!!!!!!!Jerry typed 185 words in 6 minutes. Pam typed 125 words in 4 minutes. Sheryl typed 242 wo

xxTIMURxx [149]

The answer is A because if you divide the amount of words typed by the number of minutes you will get the rate

4 0

4 years ago

Read 2 more answers

Write an equation of a parabola that opens to the left, has a vertex at the origin, and a focus at (–9, 0.

Georgia [21]

The standard equation of parabola:

(y-k)²=4p(x-h), with:

a) vertex = (h,k)

b) focus = (h+p, k)

c) directrix = (x=h-p)

Since this parabola has a vertex at (0,0) that means h=k=0

Hence the equation becomes: y²=4px, let's calculate p:
focus is given (-9,0) Remember h+p = -9 & since h=0, then p= -9
===> y²= - 36x

8 0

4 years ago

Dan puts $11 of his allowance in his savings account every week.how many money will he have after 15 weeks

Fittoniya [83]

If you multiply 11 by 15 which is 165 you will get your answer 165$

5 0

3 years ago

2+8+5+9+90=<br>3+45+111=

Anastasy [175]

Answer:

1) 114

2) 159

Step-by-step explanation:

2+8+5+9+90 = 114

3+45+111 = 159

Hope this helps.

8 0

3 years ago

A quadratic relation has zeros at 3 and –5. The parabola goes through the point (2, –14). What is the equation of the parabola i

olasank [31]

Answer:

$\displaystyle 2 {x}^{2} + 4x - 30 = 0$

Step-by-step explanation:

we are given the zeros and a point where it goes through of a quadratic equation

remember that when the roots are given then the function should be

$\displaystyle \: y = a(x - x_{1})(x - x_{2})$

where a is the leading coefficient and x1 and x2 are the roots

substitute:

$\displaystyle y = a(x - (3))(x - ( - 5))$

simplify:

$\displaystyle y = a(x - 3)(x + 5)$

now the given point tells us that when x is 2 y is -14 therefore by using the point we can figure out a

substitute:

$\displaystyle a(2 - 3)(2 + 5) = - 14$

simplify parentheses:

$\displaystyle a( - 1)(7) = - 14$

simplify multiplication:

$\displaystyle - 7a = - 14$

divide both sides by -7:

$\displaystyle a = 2$

altogether substitute:

$\displaystyle y = 2(x - 3)(x + 5)$

since it want the equation y should be

$\displaystyle 2(x - 3)(x + 5) = 0$

recall quadratic equation standard form:

$\displaystyle {ax}^{2} + bx + c = 0$

so simplify parentheses:

$\displaystyle 2( {x}^{2} + 2x - 15 ) = 0$

distribute:

$\displaystyle 2 {x}^{2} + 4x - 30 = 0$

hence,

the equation of the parabola in standard form is <u>2</u><u>x</u><u>²</u><u>+</u><u>4</u><u>x</u><u>-</u><u>3</u><u>0</u><u>=</u><u>0</u>

8 0

3 years ago