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3 years ago

Simplify (6.89 + 14.52) + (-14.52) =

Mathematics

1 answer:

RUDIKE [14]3 years ago

4 0

Answer:

6.89

Step-by-step explanation:

Add 6.89 and 14.52 together. Subtract 14.52 from that. You should get 6.89. Hope this helps.

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There are 71 cards in a card game deck. How many cards in 19 decks?

lawyer [7]

Answer: 1349

Step-by-step explanation:

Multiply 71 by 19

7 0

4 years ago

Read 2 more answers

Joy knits a square blanket that has an area of 1,500 square inches . What is the approximant length for each side of the blanket

Alex777 [14]

Answer:

1) Option C - 39 inches

2) Option C - 12167 cubic feet

Step-by-step explanation:

1) Given : Joy knits a square blanket that has an area of 1,500 square inches

To find : What is the approximate length for each side of the blanket.

Solution: Area of square = 1500 square inches

Let the side of the blanket = s

Formula of area of square is $A= s^2$

$1500= s^2$

$s= \sqrt{1500}$

$s=38.7$

Approximately Side of blanket = 39 inches

Therefore, Option C is correct.

2) Given : Jeff is an architect and is drawing the plan for a room addition for a client. If the shape of the room is a cube.

To find : what is the volume in cubic feet if the length is 23 feet?

Solution: Length of side of a cube (a)= 23 feet

Let the volume of a cube = V

Formula of Volume of cube is $V= a^3$

$V= (23)^3$

$V= 12167$

Volume of a cube = 12167 cubic feet

Therefore, Option C is correct.

6 0

3 years ago

A man has n keys on a key ring, one of which opens the door to his apartment. Having celebrated a bit too much one evening, he r

schepotkina [342]

Answer:

The value is $P(3) = \frac{1}{n}$

Step-by-step explanation:

From the question we are told that

The number of keys is n

The number of keys remaining after the first key is chosen is n-1

The probability that he gains entrance with the first key he selects is $\frac{1}{n}$

Generally the probability that the first key does not open the door is

$p(F_1) = 1 - \frac{1}{n} = \frac{n-1}{n}$

Generally the number of keys remaining after the second key is chosen is

n-2

Generally the probability that he gains entrance with the second key he selects is

$\frac{1}{n-1}$

Generally the probability that the second key does not opens the door is

$P(F_2) = 1- \frac{1}{n-1} = \frac{n-2}{n-1}$

Generally the probability that he gains entrance with the third key he selects is

$\frac{1}{n-2}$

Generally the probability that the door opens with the third key

$P(3) = p(F_1) * P(F_2) * \frac{1}{n-2}$

=> $P(3) = \frac{n-1}{n} * \frac{n-2}{n-1} * \frac{n-2}{n-1}$

=> $P(3) = \frac{1}{n}$

Note :

All the outcome of the events are independent

7 0

4 years ago

Given that p+q=97 and q-p=-27, find the values of p and q.

Ber [7]

Answer:

p=62 q= 35

Step-by-step explanation:

$solving \: the \: equation \: simultaneously \\ q + p = 97 - - - - (1) \\ q - p = - 27 - - - - - (2) \\ subtracting \: equation \: (2)from \: one(1) \\ q - q = 0 \\ p + p = 97 - - 27 \\ 2p = 97 + 27 \\ 2p = 124 \\ dividing \: bothsides \: by \: 2 \\ \frac{2p}{p} = \frac{124}{2} \\ p = 62 \\ put \: p \: = 62 \: into \: equation \: (1) \\ q + 62 = 97 \\ q = 97 - 62 \\ q = 35 \\ therefore \: p = 62 \: \: and \: q = 35 \\$

<h2>hope this helps</h2>

<h2>please rate and mark brainliest</h2>

8 0

2 years ago

Can you please help me

Serga [27]

Answer:

On the first one its 14-8

Step-by-step explanation:

Because PEMDAS says that parentheses comes first

Parentheses first

exponents 2nd

Multiply 3rd

divide 4th

add 5th

and subtract 6th

6 0

4 years ago