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2 years ago

Oints Q and R are midpoints of the sides of triangle ABC.

Mathematics

1 answer:

MariettaO [177]2 years ago

3 0

Answer:

AQ = 20 units

Step-by-step explanation:

Comparing triangle AQR to ABC,

$\frac{AQ}{AB}$ = $\frac{QR}{BC}$

$\frac{4p}{8p}$ = $\frac{2p + 3}{6p-4}$

cross multiply and make p the subject of formula, we have:

8p (2p+3) = 4p(6p-4)

16 $p^{2}$ + 24p = 24 $p^{2}$ - 16p

24p + 16p = 24 $p^{2}$ - 16 $p^{2}$

40p = 8 $p^{2}$

divide through by 8p,

p = 5

Therefore, AQ = 4p

= 4 × 5

= 20

AQ = 20 units

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Xelga [282]

Answer:

you need 100ml of 5X TAE and 400ml of water.

Step-by-step explanation:

You need to use a rule of three:

$C_1V_1=C_2V_2$

where:

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2 years ago

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Answer:

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2 years ago

8+7×6/3x3 please help me with the question.

Leto [7]

Answer:

Step-by-step explanation:

must use PEMDAS (order of operations)

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Between which two ordered pairs does the graph of f(x) = one-halfx2 + x – 9 cross the negative x-axis?

Doss [256]

None of Option are correct

Step-by-step explanation:

The Given function is f(x) = y = $\frac{1}{2} x^{2} + x -9$

Here, f(x) is quadratic function and it asked that when function cross the Negative X-axis.

If any function cross the X-axis then, Point of intersection will have y component as zero.

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Comparing with $ax^{2} + bx + c= 0$

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Since,

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$x=\frac{- 1+\sqrt{(1)^{2}-4(\frac{1}{2})(-9) }}{2(\frac{1}{2})}$

$x=\frac{-1+\sqrt{1+(2)(9)}}{1}$

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Thus, None of option are correct.

Verification.....

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Ostrovityanka [42]

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