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Leno4ka [110]
3 years ago
8

James buys sand to fill a sandbox that is shaped like a rectangular prism. The sandbox has a square base with a side length of 0

.5 yards and a height of 0.4 yards. The store sells sand for $34 per cubic yard.
How much does James spend on sand?

Mathematics
1 answer:
masha68 [24]3 years ago
5 0
To answer this question you will need to find the total volume of the sandbox. You would do this by multiplying the 0.5 yards x 0.5 yards x 0.4 yards. This would be the length times the width times the height. The answer is 0.1 yd.³. You would then take this part of a cubic yard multiplied by $34.your answer would be $3.40.

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What is the value of x in the equation 4x+8y=40, when y=0.8?
lubasha [3.4K]
4x+8y=40
0.8*8=6.4
4x+6.4=40
40-6.4=33.6
4x=33.6
33.6\4=8.4
X=8.4
6 0
3 years ago
Could someone do all the problems and/or check my work?
MArishka [77]
11. You’ve done it correctly

12. Let x^2=y
y^2+13y+40=0
(y+8)(y+5)=0
y=8, 5
Since y=x^2
x^2=8 x^2=5
x=+/-√5 x= +/-2√2

13. x^4-x^2-x^2-8=0
x^4-2x^2-8=0
let x^2=y
Y^2-2y-8=0
(y-4)(y+2)=0
y=4, -2
Since y=x^2
X^2=4 X^2=-2
X= +/- 2 This wouldn’t be a real solution

14. It’s pretty much the same process, just substitute y in for x^2. If you’re confused feel free to ask and I can do it, or you can put it through Photomath

15. You’re on the right track so I’m just going to continue from where you left off
x^2(4x+5)-4(x+5)=0
(x^2-4)(4x+5)=0
x= +/- 2 4x=5
x=5/4 or 1 1/4

Hope this helped :)
8 0
3 years ago
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At a local fair, 194 balloons are blown up. over the course of the day, 85 of them are given away to children and another 38 of
kaheart [24]

Answer:

74

Step-by-step explanation:

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Draw the graph of the given equation. y = 1.7x<br><br> Theres a graph
yan [13]

Answer:

I inserted your equation into desmos calculator

,  Hope this helps :)

Have a great day!!

4 0
2 years ago
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Which number belongs to the solution set of the equation below? 8x=120
vlabodo [156]
8x = 120
x = 120/8
x = 15
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3 years ago
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