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3 years ago

Pls help! I need the answer quickly! thank you!

Mathematics

1 answer:

melamori03 [73]3 years ago

4 0

Answer:

B) 36

BA=CD

BA=9

AREA OF TRIANGLE ABC=1/2×b×h

63=1/2×b×9

126=b×9

b=14

BC=14

AD=BC

AE+ED=BC

AE=BC-ED

AE=14-6

AE=8

AREA OF TRIANGLE ACE= 1/2×AE×CD

= 1/2×8×9

=36

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Solve: simultaneous equations 3x + 4y = 27 x + 4y = 17

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Answer:

x = 5, y = 3

Step-by-step explanation:

Elimination method: (I will be eliminating 4y)

3x + 4y = 27 --- Equation 1

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4 years ago

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Step-by-step explanation:

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3 years ago

F(x)=2x+3/4x+5 find f(-9)

mylen [45]

$\implies {\blue {\boxed {\boxed {\purple {\sf { f(-9)= 0.48}}}}}}$

$\large\mathfrak{{\pmb{\underline{\orange{Step-by-step\:explanation}}{\orange{:}}}}}$

$f(x) = \frac{2x + 3}{4x + 5} \\$

For $f(-9)$ , put " $-9$ " for every value of " $x$ ".

$↬f( - 9) = \frac{2( - 9) + 3}{4( - 9) + 5}\\$

$↬ f(-9) = \frac{ - 18 + 3}{ - 36 + 5} \\$

$↬ f(-9) = \frac{ - 15}{ - 31}\\$

$↬ f(-9)= \frac{15}{31}\\$

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$\bold{ \green{ \star{ \red{Mystique35}}}}⋆$

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3 years ago

Read 2 more answers

A student drew a circle and two secant segment. He concluded that if PQ ~= PS, Then QR ~= ST. Do you agree with the student’s co

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Answer:

Yes

Step-by-step explanation:

You can get there a couple of ways. One makes use of the secant rules that tell you ...

PQ × PR = PS × PT

Substituting for PR and PT, you have ...

PQ × (PQ + QR) = PS × (PS + ST)

PQ² + PQ×QR = PS² + PS×ST

Substituting PQ for PS everywhere, we have ...

PQ² + PQ×QR = PQ² + PQ×ST

Dividing by PQ gives ...

PQ + QR = PQ + ST

and subtracting PQ leads us to the conclusion ...

QR = ST

_____

Another way to look at it is to draw the chord QS. Then ΔQPS is an isosceles triangle, and the perpendicular bisector of QS bisects ∠P and also goes through the circle center. Then the figure is symmetrical about that diameter secant, making QR ≅ ST.

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3 years ago