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8_murik_8 [283]
3 years ago
11

7/8 = y/11 solve for y

Mathematics
2 answers:
olasank [31]3 years ago
5 0
7/8 = y/11

so multiply 11 to both sides of the equation

so now its (7*11)/8= y 

y=77/8

if decimal then 9.625 

hope that helps
Tanya [424]3 years ago
4 0
7/8=y/11
Cross multiply
7 x 11 = 8 x y
77=8y
Divide both sides by 8
77/8 =y
or
y=77/8
In mix number: y = 9 5/8

Answer: y= 77/8 or y= 9 5/8

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Suppose a parabola has an axis of symmetry at x=-5, a maximum height of 9, and passes through the point (-7,1). Write the equati
Nutka1998 [239]

the parabola has maximum at 9, meaning is a vertical parabola and it opens downwards.

it has a symmetry at x = -5, namely its vertex's x-coordinate is -5.

check the picture below.

so then, we can pretty much tell its vertex is at (-5 , 9), and we also know it passes through (-7, 1)


\bf ~~~~~~\textit{parabola vertex form} \\\\ \begin{array}{llll} y=a(x- h)^2+ k\qquad \leftarrow \textit{using this one}\\\\ x=a(y- k)^2+ h \end{array} \qquad\qquad vertex~~(\stackrel{}{ h},\stackrel{}{ k}) \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \begin{cases} h=-5\\ k=9 \end{cases}\implies y=a[x-(-5)]^2+9\implies y=a(x+5)^2+9


\bf \textit{we also know that } \begin{cases} x=-7\\ y=1 \end{cases}\implies 1=a(-7+5)^2+9 \\\\\\ -8=a(-2)^2\implies -8=4a\implies \cfrac{-8}{4}=a\implies -2=a \\\\[-0.35em] ~\dotfill\\\\ ~\hfill y=-2(x+5)^2+9~\hfill

7 0
3 years ago
Need help stat! 100 POINTS
kirill115 [55]

Answer:

the answer is 67 square inches.

8 0
2 years ago
Read 2 more answers
If T(n)=6n-1what is the first term
OleMash [197]
So if you find the 1st term, you should write 1 instead of n
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#MissionExam001
3 0
3 years ago
A. Sam purchased 3 games for $140 after a discount of 30%. What was the original price?
Semmy [17]

Answer:

a) $175 b) It will be $126

Step-by-step explanation:

Cost price of 3 games= $140

Let the original price of games= $ x

Discount is given= 30%

According to question

x \frac{(100-20)}{100}= $140

x \frac{80}{100}= $140

x ×0.8= $140

x= $ \frac{$140}{0.8}

x= $175

Hence, the original price of games $ 140

(b)  If Sam had given a discount of 20%

Again a discount = 10%

The price of games=$ 140

Now, the selling price will be= 175\frac{(100-20)}{100}×\frac{(100-10)}{100}

Now, the selling price will be= $ 126

Hence, the price will be different.

7 0
3 years ago
Which of the following is NOT a true statement about the sides of a right triangle? A. The hypotenuse is the longest side. B. Th
Aleonysh [2.5K]
The correct answer is C. Side “a” is always longer than side “b”.
6 0
2 years ago
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