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2 years ago

X squared minus 2X -19 equals 3X +5

Mathematics

1 answer:

Anuta_ua [19.1K]2 years ago

3 0

Answer:X= 8, -3

Step-by-step explanation:

Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

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Use a trigonometric function to find the value of x

Alex17521 [72]

(180-30)/2 would be the equation and the answer is 150/2

5 0

2 years ago

I need help finding the first five terms of the following explicit formula and the sequence

Katarina [22]

Answer:

Step-by-step explanation:

Explicit formula of the sequence,

$A_n=59+11n$

$A_1=59+11(1)$

$A_1=70$

$A_2=59+11(2)$

$A_2=81$

$A_3=59+11(3)$

$A_3=92$

$A_4=59+11(4)$

$A_4=103$

$A_5=59+11(5)$

$A_5=114$

8 0

2 years ago

A catering service offers 5 appetizers,4 main courses, and 8 desserts. A customer is to select 4 appetizers,2 main courses,and 3

Alisiya [41]

Answer:

468 ways

Step-by-step explanation:

Given: A catering service offers 5 appetizers, 4 main courses, and 8 desserts

To find: number of ways a customer is to select 4 appetizers, 2 main courses,and 3 desserts.

Solution:

A permutation is an arrangement of elements such that order of elements matters and repetition is not allowed.

Number of appetizers = 5

Number of main courses = 4

Number of desserts = 8

Number of ways of choosing k terms from n terms = $nPk=\frac{n!}{(n-k)!}$

Number of ways a customer is to select 4 appetizers, 2 main courses,and 3 desserts = $5P4+4P2+8P3$

$=\frac{5!}{(5-4)!}+\frac{4!}{(4-2)!}+\frac{81}{(8-3)!}\\=5!+\frac{4!}{2!}+\frac{8!}{5!}\\=5!+(4\times 3)+(8\times 7\times 6)\\=120+12+336\\=468$

So, this can be done in 468 ways.

7 0

2 years ago

Is the sum of two mixed numbers always a mixed number

Hoochie [10]

No it is not always a mixed number if you add two mixed numbers

5 0

2 years ago

Read 2 more answers

Cho A =

FromTheMoon [43]

Step-by-step explanation:

uyghouihh9uhu9h9h79h97gouhh,jhkjhouhouhkjhkugiyt75r75r76f8ug87

5 0

1 year ago