Answer:
55
Step-by-step explanation:
Answer:Percent of the teachers surveyed had neither high blood pressure nor heart trouble = 24.99%
Step-by-step explanation:
We are given the following in the question:
Number of teachers surveyed = 120
Number of teachers had high blood pressure = 70
Percentage of teachers had high blood pressure =
Number of teachers had heart trouble = 40
Percentage of teachers had heart trouble =
Number of teachers had both high blood pressure and heart trouble = 20
Percentage of teachers had both high blood pressure and heart trouble =
Percent of the teachers surveyed had high blood pressure or heart trouble = Percent of teachers had high blood pressure +Percent of teachers had heart trouble - Percent of teachers had both high blood pressure and heart trouble
Percent of the teachers surveyed had neither high blood pressure nor heart trouble
= 100% - Percent of the teachers surveyed had high blood pressure or heart trouble
pls Brainliest
True
-1, -2, -4, -8, ... is the non-arithmetic sequence. It’s geometric as there’s a common ratio of 2.
Answer:
Step-by-step explanation:
Solve x^2 + 6x + 4. Here the coefficients of the quadratic are a = 1, b = 6 and c = 4. The discriminant is therefore b^2-4ac, or, in this case, 6^2-4(1)(4), or 20.
The roots are:
-6 ± √20
x = ---------------- = -3 ± √4√5: x = -3 + 2√5 and x = -3 - 2√5
2
The -3 comes from the -6/2 in the application of the quadratic formula.
Answer A is correct.
The trigonometric value is equal to cos 62° is sin 28°.
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