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Vladimir [108]
3 years ago
7

There are five tests in a grading period. A student received grades of 98, 80, and 90, 96 on the first four tests. What grade mu

st the student earn on the last test to have a 90 or better average for the grading period?​
Mathematics
1 answer:
inn [45]3 years ago
3 0

Answer:

80

Step-by-step explanation:

The median of the group is 80

If you add all the five numbers up they equal 454 divide by 5 the answer would be 90.8

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5x - (8x -17) = -10
mihalych1998 [28]

Answer:

x=9

Step-by-step explanation:

isolate the variable by dividing each side by factors that dont contain the variables.

can i get the crown?

5 0
3 years ago
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6x^2-4xy-15xy+10y^2 factor by grouping
PtichkaEL [24]
4 answers · Mathematics
Best Answer
We will need to split the middle term and use the grouping method. To do this multiply the coefficient of the first term (6) against the coefficient of the last term (10):

6 * 10 = 60
Factors of 60 = +-(1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60)

From the list of factors find two numbers that when added together give -19 and when multiplied together give 60. -15 and -4 added together give -19 and multiplied together give 60 so split the middle term by rewriting these values back into the expression:

6x^2 - 15xy - 4xy + 10y^2

Now use the grouping method, take out the highest common factor between the two sets of terms:

3x(2x - 5y) - 2y(2x - 5y)

Group the outside terms:

(3x - 2y)(2x - 5y)


Answers
6 = -3*-2
10 = 5*2
5*3+2*2=19
thus
(2y-3x)(5y-2x)
8 0
3 years ago
A square has an area of 148.84m2.<br> Work out the perimeter of the square
Lemur [1.5K]

Answer:

48.8m

Step-by-step explanation:

Formula for square area = a^{2} = 148.84 m^{2}

=> a = \sqrt{148.84} = 12.2

Formula for square perimeter = 4a = 4 x 12.2 = 48.8 m

8 0
2 years ago
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Given the following function ,find h(-4) <br><br>h(x)=6x^2+5​
Wittaler [7]

Answer:

h(-4) =101

Step-by-step explanation:

H(x) = 6x ^2 +5

We have  to find when h=4, putting it into function

h(-4) = 6(-4) ^2 +5

h(-4) = 6(16) +5

h(-4) = 96 +5

h(-4) =101

3 0
3 years ago
Make the following conversion.<br><br> 0.075 m = _____ cm
stepan [7]
The answer is 7.5 centimeters
7 0
4 years ago
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