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Naddik [55]
3 years ago
7

Complete 2nd answer please gradient b

Mathematics
1 answer:
andrew-mc [135]3 years ago
6 0
The gradient of b is 1
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For what value of x is PQ || BC?<br> A 5<br> B. 6<br> C. 7<br> D. 8
Dahasolnce [82]

Answer:

C. 7

Step-by-step explanation:

In\: \triangle ABC\\\overline{PQ} \parallel \overline {BC}.. (given) \\

Therefore, by Basic Proportionality theorem:

\frac{AP}{PB} = \frac{AQ}{QC} \\\\\therefore \frac{x}{x+7} = \frac{x-3}{x+1} \\\\ \therefore \:  \frac{x - x - 7}{x + 7}  =  \frac{x - 3 - x - 1}{x + 1}  \\ (by \: dividendo) \\  \\  \frac{ - 7}{x + 7}  =  \frac{ - 4}{x + 1}  \\  \\  \frac{7}{x + 7}  =  \frac{4}{x + 1}  \\  \\ 7x + 7 = 4x + 28 \\  \\ 7x - 4x = 28 - 7 \\  \\ 3x = 21 \\  \\ x =  \frac{21}{3}  \\  \\ \huge \red{ \boxed{ x = 7}}

5 0
3 years ago
PLEASE HELP ME!!!!!!!!!!!!!<br> Let f(x)=x^2+7 and g(x)=x-3/x find (f o g) (-8)
sashaice [31]
X=-56 that is the answer
3 0
3 years ago
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2p + 7p = 54 <br> Need to share more work
Alexeev081 [22]

Answer:

p=6

Step-by-step explanation:

2p + 7p = 54

Combine like terms

9p = 54

Divide by 9

9p/9 = 54/9

p = 6

3 0
3 years ago
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Expression 3x²+4x-5<br>x=-2​
Ierofanga [76]

Answer:

15

Step-by-step explanation:

I'm assuming that you want me to express x as -2.

3(-2)^2+4(2)-5

3*4+8-5

12+8-5

15

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Two sides of a triangle have lengths a and b, and the angle between them is u. what value of u will maximize the triangle's area
lina2011 [118]
Okay use the formula A=1/2xy.

6 0
3 years ago
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