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3 years ago

Please please please help

Mathematics

2 answers:

uysha [10]3 years ago

7 0

Answer:

To find the perimeter of a rectangle, add the lengths of the rectangle's four sides.

Step-by-step explanation:

fiasKO [112]3 years ago

4 0

Answer:

Perimeter = 29 cm

Area = 49.5 $cm^{2}$

Step-by-step explanation:

Perimeter:

This one's easy..just add the lengths of all the sides! P = 9.5 + 6 + 7 + 6.5, which simplifies to 29 cm.

Area:

The area of the rectangle would be the length of it's two opposing sides multiplied, or 6*7, which would be 42 $cm^{2}$ . Next we need to find the length of the smallest side of the triangle (the one on the far left). To find this, we just need to subtract the length of the rectangle's 7 cm side from the length of the rectangle's side and the length of the smallest side of the triangle. This would be $L_{triangle side}=$ 9.5 cm - 7 cm, which simplifies to 2.5 cm. To find the area of the triangle, it would be $A=\frac{1}{2}ab$ , where a and b are the lengths of its base and height (not its hypotenuse). So now for the triangle, we have $A = \frac{1}{2}(2.5)(6)$ , which simplifies to 7.5 $cm^{2}$ . Now just add the two areas to get the total area of the shape..42 $cm^{2}$ + 7.5 $cm^{2}$ = 49.5 $cm^{2}$ .

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Help pls fast and give me the steps<br> -15a-19-35=-84

Nimfa-mama [501]

Answer:

a=2

Step-by-step explanation:

-15a-19-35=-84

-15a-19=-49

-15a=-30

a=2

8 0

3 years ago

A bakery used 38 pounds of flour to make French bread and

fomenos

Answer:

since we are not given the options, I will write down a few equations that represent the number of French bread loaves and bagels:

a = number of loaves of French bread
b = number of bagels
available amount of flour = 38

2a + b ≤ 38

2a ≤ 38 - b

a ≤ (38 - b) / 2

a ≤ 19 - 0.5b

b ≤ 38 - 2a

b ≤ 2(19 - a)

Hopefully one of these equations is one of the choices given to you.

8 0

2 years ago

Suppose that p is the probability that a randomly selected person is left handed. The value (1-p) is the probability that the pe

solmaris [256]

Answer:

a) 1/2

b) 250

Step-by-step explanation:

The start of the question doesn't matter entirely, although is interesting to read. What we are trying to do is find the value for $p$ such that $1000p(1-p)$ is maximized. Once we have that $p$ , we can easily find the answer to part b.

Finding the value that maximizes $1000p(1-p)$ is the same as finding the value that maximizes $p(1-p)$ , just on a smaller scale. So, we really want to maximize $p(1-p)$ . To do this, we will do a trick called completing the square.

$p(1-p)=p-p^2=-p^2+p=-(p^2-p)=-(p^2-p+1/4)-(-1/4)=-(p-1/2)^2+1/4$ .

Because there is a negative sign in front of the big squared term, combined with the fact that a square is always positive, means we need to find the value of $p$ such that the inner part of the square term is equal to $0$ .