1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kitty [74]
3 years ago
12

X+2=9 into a word problem

Mathematics
1 answer:
Stolb23 [73]3 years ago
6 0
Robin has to go shopping for her brother's birthday.

She already bought "x" presents for him.

The next day, Robin bought "2" more presents for him just in time for his birthday.

When she got home and celebrated his birthday, her beother opened, in total, "9" presents.

--- What is the number of presents that Robin had originally purchased? ---
You might be interested in
Derive the equation of the parabola with a focus at (3,1) and a directrix of y = 5
serg [7]
So hmmm  check the picture below

so... the vertex is "p" distance from the focus and the directrix, thus, the vertex is really half-way between both

in this case, 2 units up from the focus or 2 units down from the directrix, and thus it lands at 3,3

now, the "p" distance is 2, however, the directrix is up, the focus point is below it, the parabola opens towards the focus point, thus, the parabola is opening downwards, and the squared variable is the "x"

because the parabola opens downwards, "p" is negative, and thus, -2

now, let's plug all those fellows in then

\bf \begin{array}{llll}
(x-{{ h}})^2=4{{ p}}(y-{{ k}})\\
\end{array}
\qquad 
\begin{array}{llll}
vertex\ ({{ h}},{{ k}})\\
{{ p}}=\textit{distance from vertex to }\\
\qquad \textit{ focus or directrix}
\end{array}\\\\
-----------------------------\\\\

\begin{cases}
h=3\\
k=3\\
p=-2
\end{cases}\implies (x-3)^2=4(-2)(y-3)\implies (x-3)^2=-8(y-3)
\\\\\\
-\cfrac{(x-3)^2}{8}=y-3\implies \boxed{-\cfrac{1}{8}(x-3)^2+3=y}

5 0
3 years ago
Help me out with this .​
Kruka [31]
Give me points first!! 9ft is the answer
8 0
3 years ago
Need answer asap
jolli1 [7]

Answer:

1/4 will cancel

Step-by-step explanation:

Simplify the fraction

35

-----

140

Divide the top and bottom by 7

5

---

20

divide the top and bottom by 5

1

----

4

4 0
2 years ago
Read 2 more answers
Find the slope of the line give the following point on the line:<br><br><br>(-1, -9) and (-5, 1)
Marysya12 [62]

Answer:

<u>1 -9</u>

-5-1

=-8/6

Step-by-step explanation:

check the question correctly since the answer is correct bt i cant find its option

5 0
2 years ago
The circumference of the circle shown below is 42 centimeters. Which
Ede4ka [16]

Answer:

It is answer B (125 / 360) * 42

 

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Carlos has $50 and is saving $3 a day. Sally has $14 and is saving $5 a day. As soon as possible.
    15·1 answer
  • Look at the data set below,
    6·1 answer
  • Please can someone help me??? Please
    8·1 answer
  • A national poll reported that 58% of those with Internet access have made purchases online. To investigate whether this percenta
    11·1 answer
  • What are the solutions for the given equation?<br> x^2+ 2x + 7 = 0
    14·2 answers
  • What is the surface area of the right rectangular prism?
    12·1 answer
  • Can u please answer the question
    12·2 answers
  • Which of the following trigonometric ratios are correct?
    7·1 answer
  • What is 44.5443495 rounded to the nearest thousand
    5·1 answer
  • A 16" × 16" square tray can hold at most 9 bagels placed side by side, as shown below. At most how many bagels can a 32" × 32" s
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!