3 years ago

Under certain conditions, sound travels at approximately 1080 feet per second.

Mathematics

1 answer:

Reil [10]3 years ago

7 0

As Mifc8 said, one can easily do 1.7*1080=1836 feet.

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Given that h(x) = 5-2x, find the value(s) of x when h(x) =3

arsen [322]

Answer:

x=1

Step-by-step explanation:

We have,

h(x) = 5-2x

h(x)=3

Now,

h(x)=5-2x=3

or,5-2x=3

or,5-3=2x

or,2/2=x

Therefore, x=1 when h(x)=3

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3 years ago

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A coin is tossed twice. What is the probability of the coin landing heads up both times

FromTheMoon [43]

1/2 is the probability the coin would land heads up both times.

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3 years ago

Evaluate the expression (-4)^2+12x2

Elza [17]

Answer:

Step-by-step explanation:

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step2: 12X2=24

step3: 16+24+40

Ps: when you do a math that involves both addition and multiplication,

we should do multiplication and then addition

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3 years ago

Simplify 3(x + 4) + 5x. Write your answer in factored form.

Anvisha [2.4K]

Answer:

8x + 12

Step-by-step explanation:

3(x + 4) + 5x

3x + 12 + 5x

8x + 12

7 0

3 years ago

In triangle abc, m of acb = 90, cd is perpendicular to ab , m of acd is 60. and bd is 5 cm. find ad

weeeeeb [17]

Let us draw a picture to make the things more clear.

Attached is the image.

We have been given that

$\angle acd = 60 ^{\circ}$

Therefore, we have

$\angle dcb =90- 60= 30 ^{\circ}$

Now, in triangle bcd, we have

$\tan30 = \frac{5}{cd}\\
\\
\frac{1}{\sqrt 3}=\frac{5}{cd}\\
\\
cd=5\sqrt 3$

Now, in triangle acb, we have

$tan 60 = \frac{ad}{5\sqrt3} \\
\\
\sqrt 3= \frac{ad}{5\sqrt3}\\
\\
ad= 5\sqrt3 \times \sqrt 3\\
\\
ad= 5\times 3\\
\\
ad=15$

Thus, ad is 15 cm.

4 0

3 years ago