Find the value of x in 5x + 8 = - 7

Mathematics

2 answers:

Lerok [7]3 years ago

6 0

Answer:

x=-3

Step-by-step explanation:

subtract 8 from both sides

5x+8-8=-7-8

simplify

5x=-15

divide both sides by 5

x=-3

hope this helped

Gnom [1K]3 years ago

5 0

X=-3 the value of x is -3

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laiz [17]

Answer:

B) 0.02

Step-by-step explanation:

Use the Binomial Theorem

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We have the probability of success, $p=0.30$ , and the probability of failure, $q=1-0.30=0.70$ . The binomial coefficient, $\binom{n}{k}$ , represents the amount of possible combinations that $k$ items can be chosen out of $n$ items, with its respective formula $\frac{n!}{k!(n-k)!}$ .

Hence, the best choice for the probability that 4 students chosen at random from the class of 30 that want the next test to be on Monday will be option B, 0.02

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2 years ago

Which scatterplot has a correlation coefficient closest to r = 1?

qwelly [4]

Answer:

The scatter diagram that contains the correlation coefficient closest to r = 1 is the first one shown in the attached images.

Step-by-step explanation:

The correlation coefficient "r" measures how much two variables x and y are related. When the variables are highly related, the value of r is closer to one and the points contained in the scatter diagrams are assimilated more and more to a line. When the value of r is positive the relation is crescent and therefore the slope of the line drawn by the points in the diagram has a positive slope

Therefore, to answer this question, one must search among the attached images for the dispersion diagram in which the points resemble a straight line with a positive slope.

The scatter diagram that meets the requirements mentioned is the first one that appears in the attached images