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2 years ago

Evaluate the expression when a=14 and b=6 −8ab= ?

Mathematics

2 answers:

Allisa [31]2 years ago

4 0

Answer:

$- 8ab \\ \\ - 8 \times 14 \times 6 \\ \\ = - 672$

Natalija [7]2 years ago

3 0

Answer:

$\\ \tt- 8ab$

$\\ \tt = - 8 \times 14 \times 6$

$\\ \tt= - 672$

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There are 52 cards in a standard deck: 13 hearts, 13 clubs, 13 diamonds , and 13 spades. Timothy draws four cards at random from

siniylev [52]

Answer:

$\dfrac{1}{4}$

Step-by-step explanation:

Total number of cards in a standard deck = 52

Number of hearts in the deck = 13

Number of clubs in the deck = 13

Number of diamonds in the deck = 13

Number of spades in the deck = 13

Four cards are drawn at random by Timothy.

These four cards are drawn from each one of the suits.

And the cards are not replaced.

Therefore, now cards remaining in each suit:

Remaining number of hearts in the deck = 12

Remaining number of clubs in the deck = 12

Remaining number of diamonds in the deck = 12

Remaining number of spades in the deck = 12

Formula for probability of an event E can be observed as:

$P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}$

Here, number of favorable cases are 12 (i.e. number of hearts)

Total number of cases = 12 $\times$ 4 = 48

Therefore, the required probability is:

$\dfrac{12}{48} = \bold{\dfrac{1}4}$

7 0

2 years ago

How do you solve this ?

saveliy_v [14]

When given a value of the variable, we replace each instance of the variable in the problem with that number. In this case, the expression becomes:

$\frac{3^2 + 3}{3 - 1}$

After this, we merely need to simplify the answer.

$\frac{9 + 3}{3 - 1}$

$\frac{12}{2}$

Simplifying 12/2 gives us the answer 6.

5 0

2 years ago

Find element a13 of matrix A, if A=

astraxan [27]

$\bf \begin{bmatrix} 2&-3&\boxed{4}\\ 5&0&-6\\ 7&2&-8 \end{bmatrix}\impliedby a_{1,3}\textit{ row 1, column 3}$

8 0

2 years ago

Solve for x: |4x + 12| = 16

frosja888 [35]

<span>|4x + 12| = 16
As it is in modulus function, it could be either +ve or -ve
4x+12 = 16 OR 4x - 12 = 16
4x = 16-12 OR 4x = 16 + 12
4x = 4 OR 4x = 28
x = 4/4 OR x = 28/4
x = 1 OR x = 7

In short, Your Answer would be either 1 or 7

Hope this helps!</span>

3 0

3 years ago

Read 2 more answers

How can you tell that the slope of the line through (2,2) and (-3,5) is negative without calculating

cestrela7 [59]

The y values decrease as the x values increase. If you picture the points in your head, you’ll see that (2,2) is to the right and lower than (-3,5), creating a negative slope.

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2 years ago