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masha68 [24]
3 years ago
14

Anyone know what a^2-2a-8=0 is

Mathematics
1 answer:
gizmo_the_mogwai [7]3 years ago
5 0

Answer:

x = 4 or -2

Step-by-step explanation:

i couldn't write it here, so I added a photo

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There are 90 passengers on a commuter flight from SFO to LAX, of whom 27 are traveling on business. In a random sample of five p
stepladder [879]

Answer:

C). 0.83193

Step-by-step explanation:

There are total of 90 passengers of which 27 are for business.

The probability of passengers for business = 27/90

The probability of passengers for business p = 0.3

The probability of passengers not for business q = 1-The probability of passengers for business

= 1-0.3

= 0.7

Random sample of 5 passenger, probability of at least one business passenger = 1 - probability of no business passenger

probability of no business passenger

= 5C0(0.3)^0 * (0.7)^5

= 1 *1*0.16807

= 0.16807

probability of at least one business passenger = 1 - probability of no business passenger

= 1-0.16807

=0.83193

4 0
3 years ago
ZA and ZB are complementary angles. If mZA = (2x + 10)° and m
fiasKO [112]

Answer:

∠ZB = 54°

Step-by-step explanation:

Given:

Pair of complementary angles

∠ZA = (2x + 10)° and m

∠ZB = (3x + 15)

Find:

Measure of ∠ZB

Computation:

complementary angles

a + b = 90°

∠ZA + ∠ZB = 90°

(2x + 10) + (3x + 15) = 90

5x + 25 = 90

x = 13

So,

∠ZB = (3x + 15)

∠ZB = 13(3) + 15

∠ZB = 54°

3 0
3 years ago
I hsve two questions, Matt is making a picture frame from a piece of wood trim that is 27 8 278 feet long. How can Matt rename t
Rufina [12.5K]

Answer:

Step-by-step explanation:

6 0
2 years ago
What is the maximum number of rides Karen can go on? A) 14 B) 16 C) 18 D) 20​
Nataly_w [17]

Answer:

I sorry to say but there's not enough information to go of of

4 0
2 years ago
WILL MARK AS BRAINLIEST I NEED HELP ASAPPP
sattari [20]

Answer:

8.9 in.

Step-by-step explanation:

Area of triangle = (1/2) b. h

40 = (1/2) x*x

80 = x^2

square root (80) = x

x=> 8.944.... inch

Rounding off you get 8.9 in.

7 0
3 years ago
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