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2 years ago

Please help thank you !!!

Mathematics

1 answer:

satela [25.4K]2 years ago

7 0

Answer:

Lines 2 and 4

Step-by-step explanation:

Perpendicular: Opposite slope

1 and 3 have the same slope, and if you solve 4, you get y=2x-7 and 2x is opposite of 1/2x.

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9 m<br> Find the circumference of the circle.

xxTIMURxx [149]

Answer:

56.64 m

Step-by-step explanation:

The circumference of a circle = 2 π r

r = 9m

So,

= 2 π (9)

= 18 π

= 56.64 m

Hope this helps you. Do mark me as brainliest

3 0

3 years ago

Im confused and dont know the answer to this question in the image

Hunter-Best [27]

The answer is aaaaaaaaaaaaaaa

8 0

2 years ago

Please help as fast as you can.

weeeeeb [17]

Answer:

$cos\theta$ = $\sqrt{\frac{85}{121}}$

$tan\theta$ = $\frac{6}{\sqrt{85}}$

Step-by-step explanation:

given, $sin\theta$ = $\frac{6}{11}$

since, $sin^2\theta$ + $cos^2\theta$ =1

$cos^2\theta$ =1- $sin^2theta$

$cos^2\theta[/tax]=1-[tex]\frac{36}{121}$

= $\frac{121-36}{121}$

= $\frac{85}{121}$

$cos\theta$ = $\sqrt{\frac{85}{121}}$ answer

$tan\theta$ = $\frac{sin\theta}{cos\theta}$

$tan\theta$ = $\frac{6}{\sqrt{85}}$ answer

7 0

3 years ago

4 1/2 ÷ 1 1/4 = a b/c

Alex17521 [72]

Here is the equation:

$4 \frac{1}{2} \div 1 \frac{1}{4} = a \frac{b}{c}$

When you're going to be dividing fractions, you have to keep, change, and flip. Also, make sure you make the fractions improper when it's a mixed number.

$4 \frac{1}{2} = \frac{9}{2}$

$1 \frac{1}{4} = \frac{5}{4}$

Now keep, change, flip

$Keep\ \frac{9}{2} \\ Change \div to\ \times \\ Flip\ \frac{5}{4} = \frac{4}{5}$

Your new equation is:

$\frac{9}{2} \times \frac{4}{5}$

Multiply:

$\frac{9}{2} \times \frac{4}{5} = \frac{36}{10} = 3 \frac{6}{10} \rightarrow 3 \frac{3}{5}$

Your answer is:

$3 \frac{3}{5} \\ a = 3 \\ b = 3 \\ c = 5$

3 0

3 years ago

(PLEASEE HELPP 24 points)Regina’s work to find the surface area of a square pyramid from its net is shown below. A square pyrami

Fantom [35]

Answer:

She should have used One-half (9.4) (11.9) to represent the area of a single triangle

Step-by-step explanation:

The pyramid is composed by 4 triangles and 1 square

area of the square: base² = 9.4²

area of each triangle = 1/2*base*height = 1/2*9.4*11.9

surface area of the pyramid = 4*area of each triangle + area of the square = 4*(1/2*9.4*11.9) + 9.4²

8 0

4 years ago