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lorasvet [3.4K]
3 years ago
12

Twice the sum of a number and negative nine

Mathematics
1 answer:
Mice21 [21]3 years ago
3 0
2(x+-9)
2(x-9)
Distribute
2x-18 is the simplified expression
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Which mixed number is equivalent to the improper function below? 46/10
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Answer:

B. 4 and 6/10

Step-by-step explanation:

in order to find this answer i've always had a trick where i first off find an even number to divide these with and in this case that would be 4 and then the leftovers would be 6/10 and in this case your answer would be right there 4 and 6/10 but if needed to be simplified it would be 4 and 3/5

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A cylindrical jar's lid has a radius of 4 inches. If the volume is 351.68 in , approximately what is the height of the jar?
balu736 [363]

Answer:

7 inches

Step-by-step explanation:

The volume of a cylinder is calculated using

V = \pi {r}^{2}h

where r =4 inches is the radius and V=351.68 is the volume.

To find the height of the jar, we substitute these values and solve for h.

351.68 = 3.14 \times  {4}^{2}  \times h

351.68 = 50.24h

Divide both sides by 50.24 to get:

h =  \frac{351.68}{50.24}

h=7 inches

Therefore the height of the jar is 7 inches

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Solve 8 = 2^x + 4<br> x = −4<br><br> x = −1<br><br> x = 0<br><br> x = 7
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Step-by-step explanation:

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