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RSB [31]
2 years ago
12

To get a final grade of B, a student must have an average mark on five tests that is greater than or equal to 80 and less than 9

0.
If Lisa's grades on the first four tests were 97, 93, 78 and 87, solve for the range of grades x that she could score on the fifth test that would result in her getting a final grade of B.

Give your answer as an inequality.
Mathematics
2 answers:
yulyashka [42]2 years ago
8 0

Answer:

Lisa must get an 88.75 or higher to stay in between 80 and 90.

Step-by-step explanation:

leva [86]2 years ago
3 0
Lisa needs 88.75 for her final grade
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Jessica is playing a board game and uses a number cube to determine how many spaces she can move for each turn.
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Answer: 1 out of 6

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3 years ago
Which combination of integers can be used to generate the Pythagorean triple (7, 24, 25)
amm1812

Answer:

3

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3 years ago
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What is 0.05 repeating as a fraction ?
grin007 [14]
This is the best I got Require to make 2 equations with the same repeating part and subtract them to eliminate the repeating part.

begin by letting x = 0.5555555................. (1)

To obtain the same repeating part after the decimal point need to multiply by 10

hence 10x = 5.555555........................(2)

It is important to obtain 2 equations in x, where the recurring part after the decimal points are exactly the same.

now subtract (1) from (2) to obtain fraction

(2) - (1) : <span>9x=5⇒x=<span><span>59</span></span></span>

8 0
3 years ago
A quadratic function is given. f(x) = 1 + x − 7 x2 (a) Use a graphing device to find the maximum or minimum value of the quadrat
Virty [35]

Answer:

a) P (x,y) \approx (0.1,1.05), b) P(x,y) = (0.07,1.04).

Step-by-step explanation:

a) The graphic is enclosed to the problem. By visual inspection, an absolute maximum is found.

P (x,y) \approx (0.1,1.05)

b) The exact method consists in the application of the First and Second Derivative Tests. First and second derivatives are, respectively:

f'(x) = 1 - 14\cdot x

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The First Derivative Test consists in equalizing the first derivative to zero and solving the expression:

1 - 14\cdot x = 0

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According to the second derivative, the critical point leads to a maximum. The remaining component is determined by evaluation the polynomial:

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y = 1.04

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3 years ago
How to write 1.075 in two foarms
tangare [24]
1 75/1000

One and seven thousandth
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3 years ago
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