3 years ago

Can you prove the two triangles congruent? By which postulate?

Mathematics

1 answer:

SpyIntel [72]3 years ago

6 0

Given 2 equal sides and a non-included equal angle as in the diagram are not enough to prove congruency

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Suppose a new car is purchased for $46,357 and depreciates by 22% over the first year of ownership. If the car is driven 12,170

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2 years ago

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The area of a rectangle is 27ft squared, and the length of the rectangle is 3ft less than twice the width. Find the dimensions o

oksano4ka [1.4K]

Answer:

width =4.5ft

length=6ft

Step-by-step explanation:

w = x

L = 2x-3

area = L*w

27 = x(2x-3)

$27=2x^{2} -3x$

$2x^{2} -3x-27=0$

$2x^{2} +6x-9x-27=0$

2x(x+3)-9(x+3)=0

(2x-9)(x+3)=0

2x-9=0

2x=9

x=9/2

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3 years ago

Determine which situation could be represented by the system of linear equations given below.

Bezzdna [24]

Answer: Jane sells beaded bracelets for $2 each and beaded necklaces for $4 each. She sold 50 pieces of jewelry at the craft fair last weekend and made $160.

Step-by-step explanation: I just answer this and it's correct.

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2 years ago

Find the value of x and y<br><br><br>Please help me. Thank you

STatiana [176]

Answer:

Step-by-step explanation:

let each angle=A

A+A+A=180

3A=180

A=180/3=60°

as the angles are equal so sides are equal.

16+y=46

y=46-16=30

applying sine formula

$\frac{30}{sin z} =\frac{46}{sin~80} \\sin~z=\frac{30}{46} \times ~sin~80=\frac{15}{23} \times sin ~80\\z=sin^{-1}( \frac{15}{23} \times sin ~80) \approx~39.96^\circ \approx40^\circ$

z+x=60

40+x=60

x=60-40=20°

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3 years ago

Help with the ones that aren’t answered plz

Delicious77 [7]

-12 - (-5) = -7

-13 - (-5) = -8

-20 - (-4) = -16

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10 - (-12) = 22

-3 - 2 = -5

-4 - 6 = -10

-5 - 5 = -10

0 - 6 = -6

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3 years ago

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