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3 years ago

Please help me with this question thank you

Mathematics

2 answers:

Mkey [24]3 years ago

8 0

Answer: X=0

Step-by-step explanation:

Diano4ka-milaya [45]3 years ago

7 0

Answer:

Shindeu NANI?!?

Step-by-step explanation:

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Use the triangle below to find cos V.

Semenov [28]

Answer:

$cos\ V = \frac{2\sqrt{29}}{29}$

Step-by-step explanation:

Given

The attached triangle

Required

Find cos V

In trigonometry:

$cos\theta = \frac{Adjacent}{Hypotenuse}$

In this case:

$cos V= \frac{TV}{UV}$

Where

$TV = 6$

and

$UV^2 = TV^2 + TU^2$ -- Pythagoras

$UV^2 = 6^2 + 15^2$

$UV^2 = 261$

Take square roots

$UV = \sqrt{261$

$UV = \sqrt{9*29$

$UV = \sqrt{9} *\sqrt{29$

$UV = 3\sqrt{29$

So:

$cos V= \frac{TV}{UV}$

$cos\ V = \frac{6}{3\sqrt{29}}$

$cos\ V = \frac{2}{\sqrt{29}}$

Rationalize:

$cos\ V = \frac{2}{\sqrt{29}}*\frac{\sqrt{29}}{\sqrt{29}}$

$cos\ V = \frac{2\sqrt{29}}{29}$

8 0

2 years ago

Discuss the validity of the following statement. If the statement is always true, explain why. If not, give a counterexample.

Zigmanuir [339]

Answer:

$P(E \cup F)=P(E)+P(F)$ .

Step-by-step explanation:

Given the statement

If $P(E)+P(F)=P(E \cup F)+P(E \cap F)$ , then E and F are mutually exclusive events.

If two events are mutually exclusive, they have no elements in common. Thus, P(E∩F)=0.

Therefore, the statement is always true as P(E∩F)=0

For mutually exclusive events:

$P(E \cup F)=P(E)+P(F)$ .

3 0

3 years ago

A building's construction cost was $625,000. the building is 80 feet long, 45 feet wide and 12 feet high. what was the cost of t

Alborosie

Volume = Length x Width x Height
Volume = 80 x 45 x 12
Volume = 43200 ft³

Cost per cubic foot = $625 000 ÷ 43200
Cost per cubic foot = $14.47

----------------------------------------------
Answer: $14.47 per cubic foot.
----------------------------------------------

8 0

3 years ago

I need this ASAP i need to make 5−4+7x+1= (blank)x + (blank) into a infinite,no and one solution

katrin2010 [14]

Answer:

7x + 2

Step-by-step explanation:

5 - 4 + 7x + 1

= 1 + 7x + 1

= 7x + 2

hope this helped u bud :)

5 0

3 years ago

2 1/2 - 1 1/4 = ____ units

Flura [38]

Answer: 1 $\frac{1}{4}$

Step-by-step explanation:

8 0

3 years ago