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3 years ago

Please help asap 40 points

Mathematics

2 answers:

Serggg [28]3 years ago

8 0

The answer is C because the Zero-Product Property takes the 0. Also takes the 5 and the 4. Using the 5 as the denominator and 4 as the numerator.

denis23 [38]3 years ago

4 0

Remark
What this is trying to tell you is that you have two factors. Each in turn can be zero, but they cannot be zero at the same time. You will get that kind of question, just not now.

So either - n = 0 or 5n - 4 =0

Solution
- n = 0 Multiply both sides by - 1
(-1)*(-n) = 0*-1
n = 0

5n - 4 = 0 Add 4 to both sides.
5n = 4 Divide by 5
n = 4/5

Comment
B and D are both wrong 4/5 is positive. and those list n as -4/5 which is wrong.
A is wrong because the function will not go to 0 if n = -1

Answer
C <<<<Answer

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4 years ago

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Donte simplified the expression below.

sergij07 [2.7K]

The answer is: [A]: He did not apply the distributive property correctly for 4(1 + 3i) .
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4*(1 + 3i) = (4*1) + 3i = 4 + 31; (and did the rest of the problem correctly);

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4 years ago

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The height 'h' (in feet) of a ball in a baseball game can be modeled by h = -16t² + 28t + 8 , where 't' is the time (in seconds)

lidiya [134]

Answer:

a) No. t < 0 is not part of the useful domain of the function

b) 2.0 seconds

Step-by-step explanation:

a) A graph of the function is shown below. It shows t-intercepts at t=-0.25 and t=2.0. We presume that t is measured forward from some event such as the ball being thrown or hit. The model's predicted ball location has no meaning prior to that event, when values of t are negative.

b) It is convenient to use a graphing calculator to find the t-intercepts. Or, the equation can be solved for h=0 any of several ways algebraically. One is by factoring.

h = 0 = -16t² +28t +8 . . . . . . . . . . . . the ball hits the ground when h = 0

0 = -4(4t² -7t -2) = -4(4t +1)(t -2)

This has t-intercepts where the factors are zero, at t=-1/4 and t=2.

The ball will hit the ground after 2 seconds.

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3 years ago

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4 years ago

Highland Park is located between two parallel streets, Walker street and James Avenue. The park faces Walker Street and is borde

ehidna [41]

Applying the definition of alternate angles and angles on a straight-line: m<ACB = 84°.

Recall:

Alternate angles are congruent and have equal angle measures.

Angles on a straight-line = 180 degrees.

The diagram showing the information and sketch of the Highland Park is attached below (see attachment).

Thus:

m<BAC = 36° (given)

m<BCE = 60° (given)

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Therefore,

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m<ACB = 180° - (m<ACD + m<BCE) (angles on a straight-line)

Substitute

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Thus, applying the definition of alternate angles and angles on a straight-line: m<ACB = 84°.

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brainly.com/question/15234579

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