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Mashutka [201]
3 years ago
9

Claire has received scores of​ 85, 88,​ 87, and 80 on her algebra tests. what is the minimum score she must receive on the fifth

test to have an overall test score average of at least 82 ​?
Mathematics
1 answer:
algol [13]3 years ago
5 0

85+88+87+80+x/5=82

340+x=410

410-340=70

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Solve the equation using square roots.<br><br> 2x^2-98=0
Yuliya22 [10]

Step-by-step explanation:

2x²-98=0

2x²=98

x²=98/2

x²=49

x=root 49

so,x=7

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3 0
4 years ago
Write a function rule that gives the total cost c(p) of p pounds of sugar if each pound costs $0.42.
julia-pushkina [17]
Since a pound of sugar increases proportionally to the total cost of sugar bought, then the function can be written as:

c(p) = 0.42p

Where: c(p) = total cost of sugar bought
p = pounds of sugar

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5 0
3 years ago
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Please help!! i have no idea!
Gemiola [76]

Answer:

θ = 60.34

Step-by-step explanation:

\frac{\left(12.8\cdot \:sin\left(90\right)\right)}{sin\left(52.3\right)} = 16.177

\frac{\left(16.177\cdot \:sin\left(90\right)\right)}{18.6} =  θ = .869

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7 0
3 years ago
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A submarine starts at an elevation of -35 meters compared to sea level. It then makes 3 equal descents of 145 meters each is the
julia-pushkina [17]
Start at -35

three descents of 145m adds to a total descent of 435m

-35-435=-470. the final depth is not greater than 500m
8 0
3 years ago
Is this wrong If so please explain why or why not
vovangra [49]

Answer:

2: The perimeter of the base is 37 units.

Step-by-step explanation:

1. A = LW = 21 * 16 = 336 units^2     True

2. P = 2(L + W) = 2(21 + 16) = 2(37) = 74 units      False

3. H = 21 units     True

4. SA = 2LW + 2H(L + W) = 2(21)(16) + 2(21)(21 + 16) = 2226 units^2     True

3 0
3 years ago
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