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2 years ago

PLEASE HELP THIS IS DUE AT 11:59!!!

Mathematics

1 answer:

dezoksy [38]2 years ago

5 0

Answer:

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Step-by-step explanation:

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If Upper A equals StartSet x | x is an even integer EndSet commaA={x | x is an even integer}, Upper B equals StartSet x | x is a

White raven [17]

Answer:

C ∪ D = {2, 3, 4, 5, 8, 9, 10, 11}

Step-by-step explanation:

A={x | x is an even integer}

B={x | x is an odd integer},

C={2, 3, 4, 5},

D={8, 9, 10, 11}.

A union of two or more sets is the collection of the members of the sets in a set without repeating any element.

Given sets C and D above, the union of the two sets is the set:

C ∪ D = {2, 3, 4, 5, 8, 9, 10, 11}

Note: The Intersection is the collection of sets that are common to C and D. in this case no element is common, therefore the intersection is a Null Set.

8 0

3 years ago

Solve for x in the equation x2+2x+1= 17.<br> x=-1: V15<br> x=-11/17<br> X=-2=2.5<br> X=-11 13

Shalnov [3]

Answer:

x=-1

Step-by-step explanation:

x^2+2x=16=0

Use the quadratic formula to find the solutions.

−b±√b2−4(ac)/

Substitute the values

a=1, b=2, and c=−16 into the quadratic formula and solve for x

4 0

3 years ago

HELPP! Calculate S22 for the arithmetic sequence in which a12=2.4 and the common difference is d=3.4

Natalka [10]

Answer:

Option A is correct.

Value of $S_{22} = 15.4$

Step-by-step explanation:

Given: $a_{12} = 2.4$ and common difference(d) = 3.4

A sequence of numbers is arithmetic i.e, it increases or decreases by a constant amount each term.

The sum of the nth term of a arithmetic sequence is given by;

$S_n =\frac{n}{2}(2a+(n-1)d)$ , where n is the number of terms, a is the first term and d is the common difference.

We also know the nth tern sequence formula which is given by ;

$a_n = a+(n-1)d$ ......[2]

First find a.

it is given that $a_{12} = 2.4$

Put n =12 and d=3.4 in equation [2] we have;

$a_{12} = a+(12-1)(3.4)$

$a_{12} = a+(11)(3.4)$

2.4 = a + 37.4

Simplify:

a = - 35

Now, to calculate $S_{22}$

we use equation [1];

here, n =2 , a =-35 and d=3.4

$S_{22} = \frac{22}{2}(2(-35)+(22-1)(3.4))$

$S_{22} = (11)(-70+21(3.4))$

$S_{22} = (11)(-70+71.4)$

$S_{22} = (11)(1.4)$

Simplify:

$S_{22} = 15.4$

Therefore, the sum of sequence of 22nd term i.e, $S_{22} = 15.4$

8 0

3 years ago

Read 2 more answers

7x-y=19 2x-3y=19 solve by elimination

avanturin [10]

Answer:

x=2 y=-5

Step-by-step explanation:

7x-y=19

2x-3y=19

Multiply the first equation by -3

-3(7x-y)=19*-3

-21x +3y =-57

Add this to the second equation to eliminate y

-21x +3y =-57

2x-3y=19

-----------------------

-19x = -38

Divide by -19

-19x/-19 = -38/-19

x = 2

Now we need to find y

7x-y = 19

7(2) -y =19

14 -y =19

Subtract 14 from each side

14-14 -y=19-14

-y=5

Multiply by -1

y = -5

8 0

3 years ago

Eva’s daughter is 15 years younger than her son. Eva’s son is 22 years old. How old is her daughter?

joja [24]

Answer:

Step-by-step explanation:

22-15=x

x=7

4 0

2 years ago

Read 2 more answers