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2 years ago

Can anyone help me with my homework

Mathematics

2 answers:

Gemiola [76]2 years ago

8 0

Answer:

1: (0,3)

2: (-4,-2)

3: (-1,-5)

4: (4,0)

Step-by-step explanation:

Mandarinka [93]2 years ago

4 0

A F G I

i worked it out

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Can someone help me with this?

Norma-Jean [14]

Answer:

the answer is d. ASA

BAC is congruent to DAC because its an angle bisector

AC is congruent to AC by the reflexive property of congruence

BCA is congruent to DCA because its a perpendicular bisector

4 0

3 years ago

Read 2 more answers

A square room has a perimeter of 40 feet. What is the area of the room?

Trava [24]

Answer:

100 ft²

Step-by-step explanation:

There are 4 congruent sides in a square

Perimeter = 4x

40 = 4x

x = 10

Area = base x height or length x width

Since all sides are the same, 10 is base and height

10x10 = 100

units = ft²

Answer = 100 ft²

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

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2 years ago

Read 2 more answers

baherus [9]

Answer: see proof below

<u>Step-by-step explanation:</u>

Given: cos 330 = $\frac{\sqrt3}{2}$

Use the Double-Angle Identity: cos 2A = 2 cos² A - 1

$\text{Scratchwork:}\quad \bigg(\dfrac{\sqrt3 + 2}{2\sqrt2}\bigg)^2 = \dfrac{2\sqrt3 + 4}{8}$

Proof LHS → RHS:

LHS cos 165

Double-Angle: cos (2 · 165) = 2 cos² 165 - 1

⇒ cos 330 = 2 cos² 165 - 1

⇒ 2 cos² 165 = cos 330 + 1

Given: $2 \cos^2 165 = \dfrac{\sqrt3}{2} + 1$

$\rightarrow 2 \cos^2 165 = \dfrac{\sqrt3}{2} + \dfrac{2}{2}$

Divide by 2: $\cos^2 165 = \dfrac{\sqrt3+2}{4}$

$\rightarrow \cos^2 165 = \bigg(\dfrac{2}{2}\bigg)\dfrac{\sqrt3+2}{4}$

$\rightarrow \cos^2 165 = \dfrac{2\sqrt3+4}{8}$

Square root: $\sqrt{\cos^2 165} = \sqrt{\dfrac{4+2\sqrt3}{8}}$

Scratchwork: $\cos^2 165 = \bigg(\dfrac{\sqrt3+1}{2\sqrt2}\bigg)^2$

$\rightarrow \cos 165 = \pm \dfrac{\sqrt3+1}{2\sqrt2}$

Since cos 165 is in the 2nd Quadrant, the sign is NEGATIVE

$\rightarrow \cos 165 = - \dfrac{\sqrt3+1}{2\sqrt2}$

LHS = RHS $\checkmark$

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3 years ago

(x+7)(2x+1)=7 solve by using quadratic formula

Olenka [21]

I believe it is x= 7, -2

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3 years ago

A goat is tied to one corner of a rectangular shed in a large field full of grass. The rope is 3 yards long and a plan view ( fr

sertanlavr [38]

Answer:

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3 years ago