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aalyn [17]
3 years ago
10

For what value of b will f(x)= x^2 + bx + 900 have -30 as its only zero? PLEASE HELP!!

Mathematics
1 answer:
kiruha [24]3 years ago
7 0

Answer:

60

Step-by-step explanation:

If -30 is its only zero, than the factors are (x+30)(x+30) = x^2 + 60x + 900

Than b = 60

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Given: measure of angle KJ = 124°, measure of IC =38°<br><br> Find: m∠CQJ, m∠LIJ.
VLD [36.1K]

Answer:

Part 1) m

Part 2) m

Step-by-step explanation:

Part 1) Find the measure of angle CQJ

we know that

The measure of the interior angle is the semi-sum of the arcs comprising it and its opposite.

m

arc\ IK+arc\ CJ=360\°-(arc\ IC+arc\ KJ)

substitute the values

arc\ IK+arc\ CJ=360\°-(38\°+124\°)=198\°

m

Part 2) Find the measure of angle LIJ

step 1

Find the measure of angle IJL

we know that

The inscribed angle is half that of the arc it comprises.

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substitute the values

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step 2

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we know that

The measurement of the external angle is the semi-difference of the arcs it encompasses.

m

substitute the values

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step 3

Find the measure of angle LIJ

Remember that the sum of the interior angles of a triangle must be equal to 180 degrees

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According to a certain news poll, 71% agreed that it should be the government's responsibility to provide a decent standard of l
finlep [7]

Answer:

0.3157

Step-by-step explanation:

Given that according to a certain news poll, 71% agreed that it should be the government's responsibility to provide a decent standard of living for the elderly,

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= Probability for both A and B

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