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3 years ago

Translate into an algebraic equation and solve. Twelve more than half a number is 10.

Mathematics

2 answers:

Marizza181 [45]3 years ago

6 0

Answer:

1/2×+12=10, x=-4

Step-by-step explanation:

Just trust me on this

Sveta_85 [38]3 years ago

5 0

Answer:

1/2x+12=10

x= -4

Step-by-step explanation:

First subtract 12 from both sides and get 1/2x= -2

Then divide both sides by 1/2

So 2/1 (you flip the fraction to "divide" it which is just multiplying because it is easier) 2/1 times -2 is -4

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What is the square root of -1?

lora16 [44]

Answer:

Step-by-step explanation:

i means imaginary because whatever you try you can't get a number which squared gets a negative number.

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3 years ago

Mr. Alvarez has 36 kids in his 7th period class The ratio of boys to girls is 5:7. How many boys are there? How many girls are t

Eddi Din [679]

Answer: 15 boys

Explanation: ratio 5:7

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Number of boys = 5/12 × 36

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3 years ago

Monitors manufactured by TSI Electronics have life spans that have a normal distribution with a variance of 2,250,000 and a mean

Svet_ta [14]

Answer: 0.1357

Step-by-step explanation:

Given : Monitors manufactured by TSI Electronics have life spans that have a normal distribution with a variance of $\sigma^2=2,250,000$ and a mean life span of $\mu=13,000$ hours.

Here , $\sigma=\sqrt{2250000}=1500$

Let x represents the life span of a monitor.

Then , the probability that the life span of the monitor will be more than 14,650 hours will be :-

$P(x>14650)=P(\dfrac{x-\mu}{\sigma}>\dfrac{14650-13000}{1500})\\\\=P(z>1.1)=1-P(z\leq1.1)\ \ [\because\ P(Z>z)=1-P(Z\leq z)]\\\\=1-0.8643339=0.1356661\approx0.1357$

Hence, the probability that the life span of the monitor will be more than 14,650 hours = 0.1357

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3 years ago

Which table represents a function?

melamori03 [73]

Answer:

Table 1

Step-by-step explanation:

In a function, you are not allowed to have two of the same x-values. Table 1 is the only one to show this.

Table 2 has two (-5)s in the x-column, Table 3 has two (-2)s, and Table 4 has two (-4)s.

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4 years ago

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Find the surface area of the triangular prism. and equation plz

Firdavs [7]

Answer:

648

Step-by-step explanation:

A=Ph

P=perimeter of triangle

P=6+6+6

P=18

h= height of prism

h=38

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A=18*36

A=648

4 0

3 years ago

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