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3 years ago

A = {3, 5, 7, 9} and B = {1, 2, 4, 6, 7, 9}

Mathematics

1 answer:

Zigmanuir [339]3 years ago

4 0

The first option, {7, 9}

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Given the figure below, find the values of x and z.<br> (5x + 86)<br> (10x + 34)<br> X =<br> Z=

kolezko [41]

Answer:

$x = 4 \\ z = 106$

Step-by-step explanation:

$(5x + 86) + (10x + 34) = 180 \\ 15x + 120 = 180 \\ 15x = 180 - 120 \\ 15x = 60 \\ \\ x = \frac{60}{15} \\ \\ x = 4$

$(5x + 86) = 5(4) + 86 = 20 - 86 = 106$

Z= 106 —> Opposite angles

I hope I helped you^_^

8 0

2 years ago

A total of 3 cards are chosen at random, without replacing them, from a standard deck of 52 playing cards. What is the probabili

Minchanka [31]

Answer: $\dfrac{1}{5525}$

Step-by-step explanation:

The total number of cards =52

The number of kings in the cards = 4

If repetition is not allowed , then the total number of ways of choosing 3 cards will be :-

$52\times51\times50=132600$

The number of ways of choosing 3 kings will be :-

$4\times3\times2=24$

Now, the probability of choosing 3 king cards will be :-

$\dfrac{24}{132600}=\dfrac{1}{5525}$

Hence, the probability of choosing 3 king cards = $\dfrac{1}{5525}$

4 0

3 years ago

Which of the following are equivalent to the expression 9/4 ( 1.75 - 2 1/4)? Select all that apply.

Sindrei [870]

Answer:

9/4 (1.75 - 21/4)

=9/4 (1.75 - 5.25)

=2.25 -3.5

= -1.25

I think your f answer is wrong

there should be -1.25

4 0

2 years ago

Hannah's school hosted a book donation. There are 150 students at her school, and they donated a total of b books! Hannah donate

svetoff [14.1K]

Answer:

$x=3*\dfrac{b}{150}$

Step-by-step explanation:

Let x = number of books that Hannah donated

We know that the number of students is 150 and the total number of books is represented by b, we can write that as:

Average number of books donated by each student = $\dfrac{b}{150}$

Now we know that Hannah donated 3 times as much as the average. We can write that as:

$x=3*\dfrac{b}{150}$

4 0

3 years ago

If the two triangles shown below are congruent, select the corresponding 1 point

nadya68 [22]

Answer:

SSS

Step-by-step explanation:

The two triangles both share a side (the middle line), and it is shown that the other lines are congruent to each other. So all 3 sides are congruent, meaning SSS is the postulate that proves this.

4 0

2 years ago