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igor_vitrenko [27]
3 years ago
8

. Factor the polynomial x2 + 2x - 15.​

Mathematics
1 answer:
noname [10]3 years ago
3 0

Answer:

(x-3) (x+5)

Step-by-step explanation:

After determining that there was no GCF, I just used the trial an error method using the factors of 15. For small numbers like the one provided, it is pretty fast and effective.

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7 + 2y^2<br><br> Evaluate the expression for <br> Y = 5.<br><br><br> Please help me
garik1379 [7]

Answer:

107

Step-by-step explanation:

We first need to input the values of the variables.

7 + 2 x 5^2

7+10^2

7+100 = 107

4 0
3 years ago
A survey found that 8 out of 10 parents approved of the new principal’s performance. If 4 parents name are chosen with replaceme
Natasha2012 [34]

Answer:

The probability is 0.044

Step-by-step explanation:

Step-by-step explanation:

Let p be the probability that the new principal’s performance is approved.

This is obtainable from the survey and it is 8/10 = 0.8

Let q be the probability that the new principal’s performance is disproved.

That will be;

1 - q = 1- 0.8 = 0.2

To calculate the probability that 14 parents names are chosen at random and they all

approve of the principal’s performance, we use the Bernoulli approximation of the binomial theorem.

That will be;

14C14 * p^14 * q^0

= 1 * 0.8^14 * 0.2^0

= 0.043980465111 which is approximately 0.044

8 0
3 years ago
A rectangle has a length of 32 yards less than 3 times its width. If the area of the rectangle is 748 square yards, find the len
Blababa [14]
I hope this helps you

4 0
3 years ago
Help please I DONT UNDERSTANDDDDD
algol [13]
The answer a are

1 C
2 A
3 whatever letter has the the answer 5x10^10
8 0
3 years ago
geomatry) Pleasee help I'll give brainest and thanks :)Also please don't answer if you don't know!! Thanks in advance
Iteru [2.4K]

Answer:

x = 50°

Step-by-step explanation:

sum of all angles of a quadrilateral is 360°

so, the other unknown angle be y

=》y + 40° + 110° + 80° = 360°

=》y + 230° = 360°

=》y = 360° - 230° = 130°

and the unknown angle + x = 180°

( because they for linear pair )

so, x + y = 180°

x + 130° = 180°

x = 180° - 130° = 50°

hence, x = 50°

8 0
3 years ago
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