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Daniel [21]
4 years ago
13

Sara is taking a test made up of multiple-choice and open-ended questions. The multiple-choice questions have a value of 4 point

s each, and the open-ended questions have a value of 5 points each. If Sara has already answered 10 multiple-choice questions correctly, which inequality best describes the amount of open-ended questions Sara must answer correctly to earn more than 70 points?
x>6
x<6
x>12
x<12
Mathematics
2 answers:
kirill115 [55]4 years ago
8 0
I believe that the answer is C.
Vladimir79 [104]4 years ago
4 0
To find this, you must find the total number of point Sara has scored already.  She has answer 10 multiple choice questions which are 4 points each.  This means that Sara has scored 40 points so far.

If Sara wants to score at least 70 points, she needs to score at least 30 more points.  To find how many open ended questions she needs to answer, you need to divide the remaining number of points by the number of points an open ended question is worth.  The number we get will be x.

30/5 = 6

This means Sara must complete at least 6 open ended questions to score 70.  Now all we have to do is figure out which inequality sign to use.  Since Sara wants to score more than 70 points, it should be the "greater than" sign.

Your answer is:  x>6  (The first selection)

Hope this helps! :)
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What is the smallest positive integer n such that n! ends in at least 2019 zeros?​
Lady_Fox [76]

Answer:

I think there's 502

Step-by-step explanation:

if this is a olunomical question that should be it I believe, because you have to write in standered form then when it equals zero, then factor it

3 0
2 years ago
Please answer this question
Marizza181 [45]

Answer:

C, The marble is 3 times as likely to be black as it is to be white.

Step-by-step explanation:

The probability of a marble being drawn is:

number of marbles of that color/total number of marbles

Find total number of marbles

5+8+4+15= 35

So the probability of drawing:

white: 5/32

polka dot: 8/32

striped: 4/32

black: 15/32

The probability of drawing white, polka dot, or striped is obviously different, so A is wrong.

The probability of drawing every color but black is 5/32 + 8/32 + 4/32 = 17/32, which is more than the chance of drawing black, so B is wrong.

The probability of drawing black is 15/32, and that is 3 times larger than the probability of drawing white (5/32), so C is correct.

The probablility of drawing a polka dot is 8/32, which is not four times as large as stripe (4/32), so D is wrong.

8 0
3 years ago
Please help, whoever gets it right I will mark brainliest.
Pepsi [2]

Answer:

One and Four

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Graphing functions <br> f(x)=x^2-6x-27/x+3
hammer [34]
Funny, this looks like a complex graph, until you realize that the numerator can be written like (x+3)(x-9).

So really, this is a straight line f(x) = x-9.

But wait, there's a catch. x≠3, because that would divide by zero. So in your straight line, you have to draw a "hole" at (3,6)
5 0
3 years ago
If f(x)=3x+2, find the following value:<br> f(4)=?
lubasha [3.4K]

Answer:

f(4)=14

Step-by-step explanation:

f(x)=3x+2

f(4)=3x+2

f(4)=3*4+2

f(4)=12+2

f(4)=14

Hope this helps!

3 0
3 years ago
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