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Black_prince [1.1K]
3 years ago
12

the length of a rectangle in (3+√7) and it's with is (1+2√7). what is the area of the rectangle? what is the perimeter of the re

ctangle​
Mathematics
1 answer:
Eddi Din [679]3 years ago
7 0

Answer:

Area: (3+√7) x (1+2√7) = 17+7√7 = 35.52

Perimeter: 2(3+√7) + 2(1+2√7) = 8+6√7 = 23.87

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It's another question about combined rectangles, can anyone help me with this?
Svetlanka [38]

Answer:

78 Ft. ^2

Step-by-step explanation:

Cut it into two pieces, 6x2, and (15-9)x11, and solve.

1. 12

2. 66

Add: 66+12= 78!

6 0
3 years ago
Can some help me with this please
olganol [36]

Answer: Ten more than twice a number is 34.

Step-by-step explanation:

it would be ten plus 2 times x=34, but we dont know that number, so we replace it with a variable.

2x+10=34

5 0
3 years ago
Which to temperatures have a sum of 0°C?
Murljashka [212]

Answer:

2°C and -2°C

Step-by-step explanation:

A number and its opposite sum to zero. (The "opposite" is the number with a minus sign instead of a plus sign, or vice versa.)

4 0
3 years ago
The proportion of American births that result in a birth defect is approximately 1/33 according to the Centers for Disease Contr
faltersainse [42]

Answer:

c. binomial distribution with n = 5 and p = 1/33.

Step-by-step explanation:

For each birth, there are only two possible outcomes. Either it results in a defect, or it does not. The probability of a birth resulting in a defect is independent of other births. So we use the binomial probability distrbution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

The proportion of American births that result in a birth defect is approximately 1/33 according to the Centers for Disease Control and Prevention (CDC).

This means that the probability of a birth resulting in a defect is p = \frac{1}{33}

A local hospital randomly selects five births.

This means that n = 5

So the correct answer is:

c. binomial distribution with n = 5 and p = 1/33.

8 0
3 years ago
It took Peter 3 hours to drive to his friend in Connecticut when he was driving with the average speed 54 mph. How much time wil
Andrew [12]

The distance is the same. So the two conditions (driving there and driving back) can be equated.

There

t = 3 hours

d = d

r = 54 mph

Back

t = ?

d = d

r = 60 mph

Basic Formula

d = r * t

Solution

54 * 3 = 60 * t            Combine the left side

162 = 60 * t                Divide by 60  on both sides

162 / 60 = t                Combine

2.7  hours = time coming back.

0.7 hours = 60 * 0.7 = 42 which is in minutes.

2 hours and 42 minutes.  Answer



3 0
3 years ago
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