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3 years ago

How many solutions is 8x+47=8(x+5)

Mathematics

2 answers:

expeople1 [14]3 years ago

7 0

8x + 47 = 8x + 40

No solutions (the above 2 expressions cannot be equal for any value of x)

Morgarella [4.7K]3 years ago

6 0

$8x+47=8(x+5)
$
$8x+47=8x+40$
$8x+47-47=8x+40-47$
$8x=8x-7$
$8x-8x=8x-7-8x$
$0=-7$
there is no solutions
Hope this helps :)

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Amanda plans to run laps around the track. Each lap is 100 yards. So far Amanda has run 240 yards. What percentage of the total

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C = k - 273.15 (a) Write two other related equations . (b) If the temperature is 23 in degrees Celsius , what is the temperature

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Answer:

(a) k = C + 273.15, F = 1.8(k - 273.15) + 32

(b) k = 296.15

Step-by-step explanation:

(a) one equation would be to solve for k instead of c, and another related equation could be from kelvin to Farenheit.

C = k - 273.15

C + 273.15 = k

k = C + 273.15

F = 1.8(k - 273.15) + 32

(b) for this one you have to substitute in the previous equation and solve for k.

23 = k - 273.15

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So 25 celcius is greater than 300 kelvis.

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3 years ago

Solve: s = 4 + √ s + 2 a. s=2 b. s=7 c. s=2 or s=7 d. no real solution

lyudmila [28]

Rewrite s = 4 + sqrt(s+2) as s-4 = sqrt(s+2)

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combine like terms: s^2 - 9s + 14 = 0

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Solve for s: s={7, 2}

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4 years ago

Read 2 more answers

A tire company has developed a new type of steel-belted radial tire. Extensive testing indicates the population of mileages obta

Andru [333]

Answer:

Step-by-step explanation:

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Let us define X be the random variable shows that the mileages tires normally distributed with

mean

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standard deviation

σ =3, 887

Therefore

X ~ (μ = 37000, σ =3,887)

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P(X < k) = 0.02

$\Rightarrow P\left ( \frac{X-\mu }{\sigma }\leq \frac{k-\mu }{\sigma } \right )=0.02
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From the standard normal curve 2% area is determined as -2.0537 and hence

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If we consider z value at two decimal places then

$\frac{k-37,000}{3,887} =-2.05\\\\\Rightarrow k=29032
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Therefore the guaranteed 29032 mileage be if the tire company desires that no more than 2 percent of the tires will fail to meet the guaranteed mileage.

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Step-by-step explanation:

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