3 years ago

How many solutions does the equation 4x + 8 = −2 − 2 + 5x have?

Mathematics

1 answer:

valina [46]3 years ago

4 0

last one because you can solve it to many way6s

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Is 0.09 greater than 0.7

chubhunter [2.5K]

No, 0.7 is greater than 0.09

0.70 > 0.09

hope this helps

3 0

3 years ago

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Scientist A dissolved 1.0 kilogram of salt in 3.0 liters of water. Scientist B dissolved 20 pounds of salt in 7.0 pints of water

Lilit [14]

scientist A dissolved 1 kg of salt in 3 litres.

scientist B dissolved 20 pounds of slat in 7 pint of water.

we know that 1 pound =0.543 g

20 pounds=9.07 kg.

1 pint=0.5 litres

so 7 pints =3.5 litres

so dissoving 1 kg of salt in 3 litres of water and 9.07 kg in 3.5 litres of water

we know that for concentration kg/l units is used .

for A= 1/3=0.33kg/l

and B=9.07/3.5=2.59 kg/l.

so scientist A has prepared more concentrated solution .

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3 years ago

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David and Tonya each cut a cylinder in half. The cross-section that results from David's cut is a rectangle. The cross-section t

bija089 [108]

Answer:

Tonya cut the cylinder vertically and David cut it diagonally.

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3 years ago

Javier rounded to the nearest half to estimate the product of 3 and two-fifths and Negative 3 and StartFraction 7 over 8 EndFrac

7nadin3 [17]

Answer:

The actual product is less than the estimate. The numbers differ by more than one.

Step-by-step explanation:

i took the test

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3 years ago

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Consider a manufacturing process called as turning (a type of machining process) that is used to manufacture cylindrical metal s

Sav [38]

Answer: 86.64%

Step-by-step explanation:

Let x be a random variable that represents the diameter of metal samples.

Given : Population mean : $\mu=10$

Standard deviation: $s=0.50$

Specified tolerance on the diameter is 0.75 mm.

i.e. range of diameter = 10-0.75< x <10+0.75 = 9.25< x< 10.75

Formula to find the z-score corresponds to x: $z=\dfrac{x-\mu}{s}$

At x= 0.75, $z=\dfrac{9.25-10}{0.50}=-1.5$

$z=\dfrac{9.25-10}{0.50}=1.5$

Using standard normal table for z-value,

P-value : $p(-1.5$

∴ Percentage of samples manufactured using this process satisfy the tolerance specification = 86.64%

6 0

3 years ago