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Oksana_A [137]
3 years ago
5

Tell whether each number is rational or irrational: Pi, -1/2, the square root of 2/3, and 0.57575757

Mathematics
1 answer:
DedPeter [7]3 years ago
5 0
Pi: Irrational
√(2/3): Irrational

0.57575757 is rational 
and -1/2 is rational.
I hope this helps.
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Which angles are right? Check all that apply
Hitman42 [59]

Answer:

If I remember correctly, right angles are 90 degree angles. So the answers would be A. B. and C.

Step-by-step explanation:

If you see the little box on the angle, that means it's a 90 degree (right) angle.

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3 years ago
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A radio transmission tower is 190 feet tall. How long should a guy wire be if it is to be attached 13 feet from the top and is t
gladu [14]

Answer:

343.7 ft

Step-by-step explanation:

The wire is anchored 190 -13 = 177 ft from the ground. That distance is opposite the given angle (31°). The measure you want is the hypotenuse of the triangle with that side and angle measures.

The mnemonic SOH CAH TOA reminds you that the relation between the opposite side, hypotenuse, and angle is ...

Sin(angle) = Opposite/Hypotenuse

Filling in the given information, you have ...

sin(31°) = (177 ft)/hypotenuse

Solving for hypotenuse gives

hypotenuse = (177 ft)/sin(31°) ≈ 343.7 ft

The length of the guy wire should be 343.7 ft.

5 0
3 years ago
How does the percent equation relate proportional quantities?​
Julli [10]

Answer:

Use cross product to determine if the two ratios form a proportion. Here we can see that 2/16 and 5/40 are proportions since their cross products are equal. Percent means hundredths or per hundred and is written with the symbol, %. Percent is a ratio were we compare numbers to 100 which means that 1% is 1/100.

Step-by-step explanation:

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3 years ago
Which is the graph of y = 5log(x+3)
Maurinko [17]

Answer:

We are given a equation as:

5log(x+3)=5

We are asked to find a graph that is used to solve the above equation.

We can write the given equation as:

we will divide both side of the equation by 5 to obtain:

log(x+3)=1

Now we have to determine which graph represents the function:

y=log(x+3)

since we know that when x=-2.

y=log(-2+3)=log(1)=0

Hence, the graph should pass through (-2,0).

Hence, the graph that satisfies this is attached to the answer.

Step-by-step explanation:

7 0
3 years ago
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If you have 3 4/6. Cups of sugar then divided it by 2 cups then added 4.9 cups how many eould you have
nata0808 [166]

Answer:

11/6 or decimal 1.8333... + 4.9 = 6.733333....

Step-by-step explanation:

Simplify the following:

(3 + 2/3)/2

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(2/3 + 3)/2

Put 3 + 2/3 over the common denominator 3. 3 + 2/3 = (3×3)/3 + 2/3:

((3×3)/3 + 2/3)/2

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11/(3×2)

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Answer:  11/6 or decimal 1.8333... + 4.9 = 6.733333....

5 0
3 years ago
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