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Basile [38]
4 years ago
13

PLEASE HELP!!! PLEASE HELP ASAP!!! I NEED CORRECT ANSWERS ONLY PLEASE!!! I NEED TO FINISH THESE QUESTIONS BEFORE MIDNIGHT TONIGH

T.
Find CD.

Write your answer as an integer or as a decimal rounded to the nearest tenth.

CD =

Mathematics
1 answer:
Nadusha1986 [10]4 years ago
8 0

Answer:

CD = 7.8

Step-by-step explanation:

Given:

Δ DBC is a right angled triangle.

\angle B = 90\°\\\\\angle C = 59\°

BC = 4

We need to find the value of CD

Solution:

Now we know that:

cos\  \theta = \frac{adjacent \ side}{hypotenuse}

So we can say that;

Cos \angle C =\frac{BC}{CD}

Substituting the given values we get;

Cos\ 59 = \frac{4}{CD}\\\\\\CD = \frac{4}{Cos\ 59} = 7.766

Rounding to nearest tenth we get;

CD = 7.8

Hence the Value of CD is 7.8.

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Dose anyone know the answer??
r-ruslan [8.4K]

In any function y = f(x) , set of all possible values of x define the domain of f(x), in the graph The curve in terms of x-axis(in 1st & 3rd quadrant) goes from -4 to -2(doesnt include -2).

So domain = [-4, -2)

Similarly, in 2nd and 4th quadrant, for x-axis

It goes from 2 to 5 (doesnt include 2 & 5)

So domain = (2, 5)

Hence,

Domain of the f(x) is [-4, -2) U (2, 5).

Range tells the possible values of y, for this function it goes from -5 to +3(doesnt include 3).

Range is [-5, 3)

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3 years ago
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Answer:

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Step-by-step explanation:

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olga2289 [7]

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Step-by-step explanation:

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A cylindrical water tank is being filled with a hose. The depth of the water increases by 1 1/4 ft per hour. How many hours will
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5-2(2x - 3) = 12<br><br> Cual es el resultado de x?
postnew [5]

Answer:

<h2>x =  -  \frac{1}{4}</h2>

Step-by-step explanation:

5-2(2x - 3) = 12

<u>Expanda los términos en el corchete</u>

Eso es

5 - 4x + 6 = 12

<u>Agrupar términos similares</u>

Envíe las constantes al lado derecho de la ecuación y aquellas con variables al lado izquierdo

Tenemos

- 4x = 12 - 5 - 6

- 4x = 1

Divide ambos lados entre - 4

<h3>-  \frac{4x}{ - 4}  =   - \frac{1 }{4}</h3>

Tenemos la respuesta final como

<h3>x =  -  \frac{1}{4}</h3>

Espero que esto te ayude

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