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3 years ago

Please help!!! 20 points

Mathematics

1 answer:

Luba_88 [7]3 years ago

7 0

Answer:

Step-by-step explanation:

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What is the solution set?

rosijanka [135]

Step-by-step explanation:

$x \div 4 \leqslant 9 \div x$

$x ^{2} \leqslant 36$

$x {}^{2} - 36 \leqslant 0$

$x {}^{2} { - 6}^{2} \leqslant 0$

$(x + 6)(x - 6) \leqslant 0$

$x \leqslant - 6 \: \: or \: \: \: x \leqslant 6$

$- 6 \geqslant x \leqslant 6$

From the explanation the correct answer is the last one from the question above

8 0

3 years ago

If one tosses a coin three times, write dow nthe possible observed number of heads and their probabilities

seropon [69]

You need to find the probability of Heads, Heads, Heads in 3 tosses;

P(HHH)= (1/2)(1/2)(1/2) <-- each toss has 2 possibilities and heads is one
P(HHH)=1/8

Therefore, the probability of flipping 3 heads on a fair coin is 1/8

Hope I helped :)

6 0

3 years ago

I need help! I'm *so* confused! I will mark Brainliest

Naddik [55]

Answer:

(-2,21)

Step-by-step explanation:

2 days ago, Paulo's commute time was halfway between his commute times 8 and 9 days ago.

8 days ago means that x-coordinate -8 represents this day. Count 8 units to the left and find that when x = -8, y = 24 minutes.

9 days ago means that x-coordinate -9 represents this day. Count 9 units to the left and find that when x = -9, y = 18 minutes.

Find halfway commute time between points (-8,24) and (-9,18):

$y=\dfrac{24+18}{2}=\dfrac{42}{2}=21,$

then coordinates that Paulo should graph are

(-2, 21)

(-2 means 2 days ago, 21 is the halfway)

5 0

3 years ago

What is the x of x^2-7x-30=0

Alexxx [7]

The 'x' in x^2-7x-30=0 is 4.

7 0

4 years ago

The vertices of a triangle are A(2,4),B(-1,-3),and C(3,6). Find the new vertices. Use the rule (x,y) >>>(x-3,y+5)to tra

Mama L [17]

Answer:

A(-1,9), B(-4,2) and C(0,11)

Step-by-step explanation:

The vertices of a triangle are A(2,4),B(-1,-3),and C(3,6).

To translate, we use the rule (x,y) >>>(x-3,y+5)

For Vertex A(2,4),

The new vertex is (2-3, 4+5)=(-1,9)

For Vertex B(-1,-3)

The new vertex is (-1-3,-3+5)=(-4,2)

For Vertex C(3,6)

The new vertex is (3-3,6+5)=(0,11)

After translation of Vertex A, B and C by the given rule, the new points are A(-1,9), B(-4,2) and C(0,11)

8 0

3 years ago