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Sindrei [870]
3 years ago
10

Find the quotient -630/-7= need help ASAP please

Mathematics
2 answers:
CaHeK987 [17]3 years ago
5 0

Answer:

90

Step-by-step explanation:

When you divide a negative number by a negative number, the negative signs cancel out and you are left with a positive number. 63/7=9, so 630/7=90. Hope this helps!

Stells [14]3 years ago
3 0

Answer:

\frac{-630}{-7} =90\\\\90 * -7 = -630

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There are 200 students in eleventh grade high school class. There are 40 students in the soccer team and 50 students in the bask
bekas [8.4K]

Answer:

P(A) = 0.2

P(B) = 0.25

P(A&B) = 0.05

P(A|B) = 0.2

P(A|B) = P(A) = 0.2

Step-by-step explanation:

P(A) is the probability that the selected student plays soccer.

Then:

P(A)=\dfrac{40}{200}=0.2

P(B) is the probability that the selected student plays basketball.

Then:

P(B)=\dfrac{50}{200}=0.25

P(A and B) is the probability that the selected student plays soccer and basketball:

P(A\&B)=\dfrac{10}{200}=0.05

P(A|B) is the probability that the student plays soccer given that he plays basketball. In this case, as it is given that he plays basketball only 10 out of 50 plays soccer:

P(A|B)=\dfrac{P(A\&B)}{P(B)}=\dfrac{10}{50}=0.2

P(A | B) is equal to P(A), because the proportion of students that play soccer is equal between the total group of students and within the group that plays basketball. We could assume that the probability of a student playing soccer is independent of the event that he plays basketball.

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4 years ago
Janelys leans a 16-foot ladder against a wall so that it forms an angle of 61^{\circ} ∘ with the ground. How high up the wall do
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The height the ladder reaches up the wall is 13.99ft

The ladder, the wall, and the ground form a right-angled triangle.

The ladder is the hypotenuse, or the longest side, of the triangle. The wall is opposite of the angle, 61^{\circ}, that the ladder makes with the ground.

The formula relating the angle the ladder makes with the ground, the ladder, and the wall is the trigonometric ratio

sin 61^{\circ}=\dfrac{\text{wall height}}{\text{ladder length}}

substituting the values for the ladder length, and sin61^{\circ}, and solving, we get

0.8746=\dfrac{\text{wall height}}{16}\\\\\text{wall height}=0.8746\times16\approx13.99ft\text{ (to the nearest hundredth)}

Learn more about trigonometry here brainly.com/question/10726141

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