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3 years ago

Plz help its my last grade

Mathematics

2 answers:

Mazyrski [523]3 years ago

7 0

Answer:

Step-by-step explanation:

i think i do am not si sure

Andrej [43]3 years ago

4 0

Answer:

A, the first option

Step-by-step explanation:

1. Add 15 to both sides to cancel out the 15 from the left. (5x < -50)

2. Divide both sides by 5 to cancel out the 5 from the left. ( x < -10)

This inequality does not include the -10 because it's <em>less than</em> -10 not less than or equal to. So, the point at -10 should not be filled in.

x has to be LESS than, so the graph should include numbers that are less than -10 which leads us to our answer, A.

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Sin Ø = -8/17 and cos Ø = 15/17. Find tan Ø

yaroslaw [1]

Answer:

-8/15

Step-by-step explanation:

So remember what sin, cos, and tan are.

sin = opposite/hypotenuse

cos = adjacent/hypotenuse

tan = opposite/adjacent

Now, using what we know of sin and cos, lets find opposite and adjacent to solve for tan.

Sin=-8/17

So this must mean that opposite is -8, and the hypotenuse is 17.

Next, lets find adjacent. Cos = 15/17

So this must mean that adjacent is 15, and again, hypotenuse is 17.

Now lets take the -8 of the opposite, and 15 of the adjacent, and get tan.

<u>Tan: -8/15. </u>

17 is not included in this whatsoever, since hypotenuse is not included in tan. And remember that it cannot be -15/8, since its opposite/adjacent, not adjacent/opposite.

Hope this helps!

8 0

3 years ago

Y= 30x + 10 how do you graph this equation?

Lapatulllka [165]

Answer:

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Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

If you roll two number cubes, what is the probability of their sum being 9 or higher?

aalyn [17]

Answer:

$Pe = \frac{10}{36}$

Step-by-step explanation:

Well, a standard cube number (dice) has numbers from 1 to 6. So the combinations that give 9 or higher, are 3-6, 6-3, 4-5, 5-4, 4-6, 6-4,5-6, 6-5, 5-5, 6-6. We will call this favorable cases (Fc) = 10

Yet, the total number of cases (T) is 6 different number by 6 different combinations (1-1 , 1-2 , 1-3 ..... 6-6), 6 x 6= 36 = T.

So, in order to calculate the probability of an event (10/36), you can use the following formula:

$Pe = \frac{Fc}{T}$