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3 years ago

Which operations is the following set closed under {...,-3,-2,1,3,...}

Mathematics

1 answer:

ch4aika [34]3 years ago

6 0

Addition should be the answer to your question

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Twenty to one meaning time

Nadya [2.5K]

Answer: 20 minutes until 1 o'clock so it would be 12:40

Step-by-step explanation:

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2 years ago

4 and 1 over 4 divided by 1 and 7 over 8

allsm [11]

Answer:

3 and 23 Over 32

Step-by-step explanation:

Done

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2 years ago

Find the zeros of the function. Enter the solutions from least to greatest . h(x) = (- 4x - 3)(x - 3) lesser x = greater

icang [17]

9514 1404 393

Answer:

-3/4, 3

Step-by-step explanation:

The zeros are the values of x that make h(x)=0. Those are the values of x that make the factors of h(x) be zero.

-4x -3 = 0 ⇒ x = -3/4

x -3 = 0 ⇒ x = 3

The zeros of the function are -3/4 and 3.

3 0

3 years ago

The length of each side of an equilateral triangle is increased by 20%, resulting in triangle ABC. If the length of each side of

kompoz [17]

Answer: Area of ΔABC is 2.25x the area of ΔDEF.

Step-by-step explanation: Because equilateral triangle has 3 equal sides, area is calculated as

$A=\frac{\sqrt{3} }{4} a^{2}$

with a as side of the triangle.

Triangle ABC is 20% bigger than the original, which means its side (a₁) measures, compared to the original:

a₁ = 1.2a

Then, its area is

$A_{1}=\frac{\sqrt{3} }{4}(1.2a)^{2}$

$A_{1}=\frac{\sqrt{3} }{4}1.44a^{2}$

Triangle DEF is 20% smaller than the original, which means its side is:

a₂ = 0.8a

So, area is

$A_{2}=\frac{\sqrt{3} }{4} (0.8a)^{2}$

$A_{2}=\frac{\sqrt{3} }{4} 0.64a^{2}$

Now, comparing areas:

$\frac{A_{1}}{A_{2}}= (\frac{\sqrt{3}.1.44a^{2} }{4})(\frac{4}{\sqrt{3}.0.64a^{2} } )$

$\frac{A_{1}}{A_{2}} =$ 2.25

The area of ΔABC is 2.25x greater than the area of ΔDEF.

7 0

3 years ago

If an equation is an identity, then how many solutions does it have?

olga2289 [7]

Hello,

If an equation is an identity, then every value of the variable makes the egality true.

Generaly we resolve an equation in R.

In this case Sol=R

3 0

3 years ago

Read 2 more answers