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3 years ago

Simplify all the equations.

Mathematics

1 answer:

hammer [34]3 years ago

8 0

Answer:

C is 5x+13 D is 5x+12

Step-by-step explanation:

expand brackets

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(3n³ - 5n + n²) - (-8n² + 3n³) please shawty please

satela [25.4K]

Answer:

Step-by-step explanation:

$3n^3-5n+n^2+8n^2-3n^3\\ \\ 9n^2-5n\\ \\ or\ n(9n-5)$

3 0

2 years ago

Read 2 more answers

A communications tower is supported by two wires, connected at the same point on the ground. One is attached to the tower at D a

viktelen [127]

Answer:

10.99 m

Step-by-step explanation:

✍️What we are basically asked to solve here is to find the distance between C and D.

To find CD, find the length of BC, and BD. Their difference will give us CD.

Thus, BC - BD = CD.

✍️Finding BC using trigonometric ratio formula:

$\theta = 30 + 10 = 40$

Opposite side = BC = ??

Adjacent side = 42 m

Thus:

$tan(\theta) = \frac{opposite}{adjacent}$

Plug in the values

$tan(40) = \frac{BC}{42}$

Multiply both sides by 42

$tan(40) \times 42 = \frac{BC}{42} \times 42$

$35.24 = BC$

BC = 35.24 m

✍️Finding BD using trigonometric ratio formula:

$\theta = 30$

Opposite side = BD = ??

Adjacent side = 42 m

Thus:

$tan(\theta) = \frac{opposite}{adjacent}$

Plug in the values

$tan(30) = \frac{BD}{42}$

Multiply both sides by 42

$tan(30) \times 42 = \frac{BD}{42} \times 42$

$24.25 = BD$

BD = 24.25 m

✍️How much below the top of the tower is the shorter one attached:

Thus,

BC - BD = CD

35.24 m - 24.25 m = 10.99 m

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3 years ago

a baby was born with a weight of five pounds and then began to gain 1.25 pounds per month. write an equation for w in terms of t

Wewaii [24]

Answer:

w times t

Step-by-step explanation:

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3 years ago

If A = (0,0) and B = (8, 2), what is the length of AB?

alexira [117]

the legenth is (8,2) .

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3 years ago

What is 25 x 65 / 73?

uranmaximum [27]

25x65=1625

1625/73=22.26

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2 years ago