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3 years ago

5

HELP ME PLEASE I'll give brainless.

1 answer:

Lana71 [14]3 years ago

3 0

Answer:

∠FGI=40°

Step-by-step explanation:

CE║FH ⇒ ∠CDG=∠FGI=40°

You might be interested in

How do you know if a square root of something is rational or irrational? like i know it can be represented by a fraction or a ra

ra1l [238]

The square root of a whole number will be rational if the whole number is a perfect square (i.e 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144 etc) and irrational otherwise.

Rational number is a number that can be described as m/n

so a fraction can be a rational number, 0.8=4/5
Irrational numbers can't be written as a fraction

The part about the number having to be a perfect square is still correct, if it's not a prefect square than it will just keep going(a decimal that never ends)

for example the square root of 0.64 is 0.8
and the square root of 10 is 3.162277...
as you can see the 0.64 one ends and is rational, whereas the 10 one just keeps going and is irrational.

5 0

3 years ago

Consider a circle with a diameter of 5 centimeters. Which equation shows how the relationship between the circumference and the

mrs_skeptik [129]

Answer:

The equation which shows how the relationship between the circumference and the diameter of this circle is equivalent to π is π = $\frac{C}{5}$ ⇒ answer C

Step-by-step explanation:

In any circle there is a constant ratio between the circumference of the circle and its diameter

This constant ratio is called π

∵ The formula of the circumference of a circle is C = π d,

where d is the diameter of the circle

- Divide both sides by d

∴ $\frac{C}{d}$ = π

- Switch the two sides

∴ π = $\frac{C}{d}$

∵ The diameter of the circle is 5 centimeters

∴ π = $\frac{C}{5}$

The equation which shows how the relationship between the circumference and the diameter of this circle is equivalent to π is π = $\frac{C}{5}$

5 0

3 years ago

Simplify 3a(a^2-3a+4)-4(3a^3-2a^2)

bogdanovich [222]

Answer:

<h2>−9a³ − a² + 12a</h2>

Step-by-step explanation:

3a(a²-3a+4)-4(3a³-2a²) = 3a³ − 9a² + 12a − 12a³ + 8a²

= (3a³ − 12a³) + (− 9a² + 8a²) + 12a

= −9a³ − a² + 12a

4 0

3 years ago

Brayden wants to buy some avocados, but he only has 1 dollar. how many avocados will he be able to buy

laila [671]

Answer:

just one. even though he's a adult.

6 0

4 years ago

The director of the library believes that 14% of the library's collection is checked out. If the director is right, what is the

Ksivusya [100]

Answer: 0.2643

Step-by-step explanation:

Let p be the population proportion and $\hat{p}$ be the sample proportion .

As per given question , we have

$p=0.14\\\\ \hat{p}=0.13\\\\ n=478$

z-score : $\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$

$z=\dfrac{0.13-0.14}{\sqrt{\dfrac{0.14(1-0.14)}{478}}}\\\\=-0.630087269176\approx-0.63$

The required probability ( using z-table ):-

$P(z$

Hence, the probability that the proportion of books checked out in a sample of 478 books would be less than 13% = 0.2643

5 0

4 years ago