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4 years ago

How do I find area and perimeter?

Mathematics

1 answer:

Vinvika [58]4 years ago

5 0

Answer:

To find the area of a rectangle or a square you need to multiply the length and the width of a rectangle or a square. There are different units for perimeter and area The perimeter has the same units as the length of the sides of rectangle or square whereas the area's unit is squared.

Step-by-step explanation:

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Milk cartons come in crates of 24. how many crates does a school need to order to serve to 400 students

krok68 [10]

divide 400 by 24

400 / 24 = 16.666

so they would need to buy 17 crates

8 0

3 years ago

a 9 grade math class has 27 students there are twice as many girls in this class as there are boys.write a system of equation th

Natalka [10]

The first equation is x + y = 27 For the second equation, there are twice as many girls (y) as boys (x), so you write: y = 2x Now you have a system of equations: x + y = 27 y = 2x

8 0

3 years ago

What are the solutions to the inequality (4x-3)(2x-1) greater than or equal to 0

Fynjy0 [20]

Answer:

3/4 and 1/2

Step-by-step explanation:

(4x-3)(2x-1) ≥ 0

If the product of 2 numbers is zero, the one of the numbers must be equal to zero.

(4x-3)(2x-1) ≥ 0

(4x-3) ≥ 0 or (2x-1) ≥ 0

4x ≥ 0+3 2x ≥ 0+1

4x ≥ 3 2x ≥ 1

x ≥ 3/4 x ≥ 1/2

6 0

3 years ago

Read 2 more answers

A normal distribution has a mean of 80.6 and a standard deviation of 13.9. Find the value where the lowest 5% of data ends.

Akimi4 [234]

Answer:

The lowest 5% of data ends at 57.73.

Step-by-step explanation:

Let the random variable X follow a Normal distribution with mean μ = 80.6 and standard deviation σ = 13.9.

The lowest 5% of the distribution can be expressed in terms of probability as follows:

$P(X$

Compute the value of x as follows:

$P(\frac{X-\mu}{\sigma}$

The z score such that P (Z < z) = 0.05 is z = -1.645.

**Use the z-table for the for the z-score.

The value of x is:

$z=\frac{x-\mu}{\sigma} \\-1.645=\frac{x-80.6}{13.9} \\x=80.6-(1.645\times13.9)\\=57.7345\\\approx57.73$

Thus, the lowest 5% of data ends at 57.73.

7 0

3 years ago

Mr. Mole left his burrow that lies below the ground and started digging his way at a constant rate deeper into the ground.

Marizza181 [45]

Answer:

$A(t)=-1.8t-4.5$

Step-by-step explanation:

Mr.Mole's digging can be described by a linear model of general equation:

$A(t)=m*t+c$

Where "m" is the rate at which he descends. Note that since the function A(t) measure his altitude relative to the ground, the rate "m" must be negative.

$(m=-1.8)$

$A(t)=-1.8*t+c$

The constant "c" is his starting position. To find this value, assign the given data at t = 5 min to the equation above

$-13.5=-1.8*5+c\\c=-4.5m$

Therefore, the function A(t) is described by the following formula:
$A(t)=-1.8t-4.5$

8 0

3 years ago