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3 years ago

PLEASE HELP ME PLZ PLZ PLZ

Mathematics

1 answer:

Oksana_A [137]3 years ago

4 0

Answer:

Step-by-step explanation:

pythagoras theorem = a* + b* = c* ( by '*' i mean squared)

2* + b* = square root twenty

4 + b* = 20

b* = 16

b = 4

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Mr.Alile gave his class 45 miuntes to read David reads 27 3/4 pages in that time . At what rate in pages per hour did david read

-Dominant- [34]

Answer:

he read 27 and 3/4

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Please help me answer this math question 1/2(b-12)

Sever21 [200]

we have given an equation $1/2(b-12)$

we need to simplify the given equation.

the distributive property is used here $a(b+c)=ab+ac$

$1/2(b-12)=\frac{b}{12} -\frac{12}{2}$

if we simplify the terms

we get $\frac{b}{2} -\frac{6}{1}$ .

4 0

3 years ago

Read 2 more answers

Hi please help me ASAP

Svetllana [295]

Answer:

12 is the denominator.

Step-by-step explanation:

Here's a trick:

If your ever making a proportion or equivalent fractions, always see what number the numerator/denominator is multiplied by to make the equivalent fraction.

In our case we have 3 being multiplied by x to get 18.

Since this is just 18 divided by 3, we ge that x = 6.

Now we can figure out our denominator's value.

We will multiply 2 times x to get our answer.

Since x = 6, we have 2 * 6 = 12 is our answer.

Check:

When we simplify, our answer should be equivalent to 3/2. If it isn't we've made a mistake. 18/12 = 6/4 = 3/2 so we are correct.

3 0

3 years ago

Select all the correct answers.

aliina [53]

Answer:

The inequality x3 − 14x2 + 48x − 1,680 ≤ 0 can be used to find pool’s length.

⇒The water level in the pool cannot exceed 14 feet.

Step-by-step explanation:

The question is on inequalities

Given;

Length= x ft

depth= x-6 ft

Width= x-8 ft

volume ≤ 1680 ft³

Forming the inequality to find length x of the pool

Volume= base area × depth

base area × depth ≤ volume

x(x-8) × (x-6) = 1680

(x²-8x )(x-6) = 1680

x(x²-8x) -6 (x²-8x)=1680

x³-8x²-6x²+48x=1680

x³-14x²+48x=1680

x³-14x²+48x-1680 ≤ 0

⇒The water level in the pool cannot exceed 14 feet...why?

taking the value of x at maximum to be 17 according to the graph, then maximum depth will be;

d=x-6 = 17-6=11 ft

⇒11 ft is less than 14ft

8 0

3 years ago

Using the Pythagorean Theorem, how do I find the answer to d ?

Mazyrski [523]

The pythagorean theorem states that in a right triangle, a² + b² = c².
Since a = b here, we square 15 and get 225 then double it to get 450. Then we find the square root of that: d is Approximately 21.213.
Hope this helps!

6 0

2 years ago