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sesenic [268]
3 years ago
5

Work out the mean for the data set below: 2.2, 2, 8.9, 4.1, 8.2

Mathematics
1 answer:
goblinko [34]3 years ago
8 0
Add all and divide by how many there is
answer is 5.08
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To raise money for after-school programs at an elementary school, a group of parents is holding a weekend of games in a communit
frez [133]

Answer:

8x-40y\geq 600 and x>0,y>0

Step-by-step explanation:

The number of people is x and the number of hours they are present in the space is y.

Per person entry cost is $8.

Per hour cost of rent is $40.

They plan to earn a minimum of $600.

Donations by all the people entering the space is 8x

Total cost of renting the space is 40y which will be subtracted from the total amount of donations.

The inequality that represents the situation is 8x-40y\geq 600 and x>0,y>0.

7 0
3 years ago
The circumference of a circle is 60 cm. What is the diameter
Mariana [72]
<h2>d ≈ 19.1 cm</h2>

<em>Using the formulas</em>

<em>C = 2πr</em>

<em>d = 2r</em>

<em>Solving for 'd' (diameter)</em>

<em>d = C</em>

<em>π = 60</em>

<em>π ≈ 19.09859cm</em>

<em />

7 0
3 years ago
If 3a-2b= 8 and a+3b=7 what is the value of 4a+b?
Fittoniya [83]
Step 1: Find the value of one variable in terms of the other.

a+3b=7\\a=7-3b

Step 2: Substitute the value you just found for this variable in the other equation.

3a-2b=8\\3(7-3b)-2b=8\\21-9b-2b=8\\21-11b=8\\21=8+11b\\13=11b\\\frac{13}{11}=b\\ b=1\frac{2}{11}

Step 3: Use your new value for the second variable to find the first.

a+3b=7\\a+3(1\frac{2}{11})=7\\a+3\frac{6}{11}=7\\\\a=3\frac{5}{11}

Now that we know the values for a and b we can find the value of 4a+b.

4a+b\\4(3\frac{5}{11})+1\frac{2}{11}\\12+\frac{20}{11}+1\frac{2}{11}\\\\12+1\frac{9}{11}+1\frac{2}{11}\\\\\boxed{15}
6 0
4 years ago
What is the product of 2.7 and 1.5
Zina [86]
The product of 2.7 and 1.5 is 4.05.
5 0
3 years ago
Read 2 more answers
4x^2 - 9y^6 <br> what patterns can be used ?<br> please and thank you !!!
S_A_V [24]

Answer:

<em>B. (U+V)(U-V)</em>

Step-by-step explanation:

<u>Factoring</u>

The given expression is:

4x^2-9y^6

It should be noted that both terms are perfect squares:

(2x)^2=4x^2

(3y^3)^2=9y^6

Since it's a difference of squares, we need to use the following pattern to factor the required expression:

(U^2-V^2)=(U+V)(U-V)

Thus, the answer is

B. (U+V)(U-V)

3 0
3 years ago
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