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2 years ago

What is the probability that at least one of the two projects will be successful?

1 answer:

7 0

1/2 or .5
Because there is two tests happening and that is the denominator, and if the probability of only one working it was be 1/2

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What is the missing fifth term in the

trapecia [35]

Answer:

The answer would be 125, because 1*1 = 1 2*2*2= 8 and so forth

Step-by-step explanation:

I hope this helps

7 0

1 year ago

Read 2 more answers

Help with#21 a,b,c,d

masha68 [24]

A....add a dot of 2 going left. and for 7 put a dot at the 7 goes right.
B... put a dot on 2 then make a arrow going right and for 7 put a dot going left.

7 0

2 years ago

If a= -5, what is the value of a^2-4/a+2

Luda [366]

Answer:

-7

Step-by-step explanation: When a= 5, let's substitute all a's with 5 in the expression:

$\frac{a^{2}-4 }{a+2}\\\frac{(-5)^{2}-4 }{-5+2}\\\\\frac{25-4}{-3}\\\frac{21}{-3} \\= -7$

5 0

3 years ago

Show that the cosine law simplifies to the Pythagorean theorem when the contained angle between the two known sides is 90°.

mixas84 [53]

Answer:

See Below.

Step-by-step explanation:

We want to show that the Law of Cosines simplifies to the Pythagorean Theorem when the contained angle between the two known sides is 90°.

The Law of Cosines is given by:

$c^2=a^2+b^2-2ab\cos(C)$

Where <em>a </em>and <em>b</em> are the two known sides, and C is the angle between them.

If C is 90° then we will have:

$c^2=a^2+b^2-2ab\cos(90 ^\circ)$

Recall that the cos(90°)=0. Hence:

$c^2=a^2+b^2-2ab(0)$

Simplify:

$c^2=a^2+b^2$

So, we acquire the Pythagorean Theorem as desired.

7 0

2 years ago

Any and all questions will get a thanks And 4 stars.

Ivenika [448]

The two ends of the track are semi circles, so we need to calculate the circumference:

Circumference = PI x 56 = 175.84

The two straight parts are 130 m each:

Total perimeter = 175.84 + 130 + 130 = 435.84 m

The answer is D.

4 0

3 years ago