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inn [45]
2 years ago
6

Solve using quadratic equation by factoring. x^2+8x=65

Mathematics
2 answers:
denis23 [38]2 years ago
7 0

Answer:

-13, 5

Step-by-step explanation:

See image below:)

VMariaS [17]2 years ago
6 0
The answer is X=5,-13
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What is the best approximation of the surface area of this right cone?
inn [45]
\bf \textit{total surface area of a cone}\\\\
s=\pi r\sqrt{r^2+h^2}+\pi r^2\quad 
\begin{cases}
r=radius\\
h=height\\
-----\\
r=12\\
h=9
\end{cases}
\\\\\\
s=\pi (12)\sqrt{12^2+9^2}+\pi (12^2)\implies s=12\pi \sqrt{225}+144\pi 
\\\\\\
s=12\pi (15)+144\pi \implies s=180\pi +144\pi \implies s=324\pi
8 0
2 years ago
Expression: (5−2)2+23×4 Step 1: (3)2+23×4 Step 2: 9+23×4 Step 3: 9+9×4 Step 4: 9+36 Step 5: 45 Emily made a mistake. Which step
Levart [38]

Answer:

Step 3

Step-by-step explanation:

Given

(5 - 2)^ 2 + 23 * 4

Required:

Determine the first step where she made mistake

Her Step 1:

(3)^ 2 + 23 * 4 --- This is correct because she solved the bracket first

Her Step 2:

9 + 23 * 4 --- This is correct because she solved 3^2 as 9

Her Step 3:

9 + 9 * 4 --- This is incorrect because 23 * 4 is not equivalent to 9 * 4

Hence, her first mistake is in step 3.

The correct expression would have been

9 + 92

Then

= 101

6 0
2 years ago
Frick and frack are surveying the times it takes students to arrive at school from home. There are 2 main groups of commuters wh
noname [10]

Answer:

900

Step-by-step explanation:

divide 4

6 0
3 years ago
Find the greatest common factor of 13x2 and 14x3
mamaluj [8]

Answer:

2

Step-by-step explanation:

13x2=26

14x3=42

Greatest common Factor of 26 and 42 is 2

8 0
2 years ago
4/ 20÷16 = ____________ plsss help fast plsss really need help fast
Pachacha [2.7K]

__________________________________

\sf\red{ANSWER}

  • 0.0125

Hope it helps (≡^∇^≡)

__________________________________

5 0
1 year ago
Read 2 more answers
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