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jarptica [38.1K]
3 years ago
13

Which equation represents the statement? mark's age, x, is 6 times his age 2 years ago.

Mathematics
2 answers:
antiseptic1488 [7]3 years ago
4 0

Answer:

a.x=6(x-2)

Step-by-step explanation:

We are given that

Mark's age=x

2 years ago,

Mark's age=x-2

We have to find the equation that represents the statement.

According to question

6 times his 2 years ago

Then , we get

6(x-2)

According to question

x=6(x-2)

Hence, option a is true.

Answer:a.x=6(x-2)

s2008m [1.1K]3 years ago
3 0
I'm pretty sure the answer is d.

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Trava [24]

Answer:9-16=-7


Step-by-step explanation:


5 0
2 years ago
How many solutions does this system have? -6x + 18y = 264. - 12x - 36y = 130 . PLS HELP​ ill give brainliest
Alchen [17]

Answer:

x=−44 + 3y

x=-\frac{65}{6} - 3y

Step-by-step explanation:

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8 0
2 years ago
Oliva has a job as a writer, she writes 2 new sheets of magazines for her job in 3 hours. What is the rate per hour at she write
elena-14-01-66 [18.8K]

Answer:

2/3 magazines per hour

Step-by-step explanation:

Olivia writes 2 new sheets of magazines in 3 hours.

The rate per hour at with she writes the sheets of magazines is the number of sheets divided by the amount of time taken to write the sheets.

Hence, the rate per hour is:

R = 2 / 3 = 2/3 magazines per hour

The rate per hour at with she writes the sheets of magazines is 2/3 magazines per hour.

4 0
3 years ago
Do well-rounded people get fewer colds?
asambeis [7]

Answer:

Step-by-step explanation:

Hello!

The objective is to test if people with less social contact get more colds than people who are involved in a variety of social activities.

For this, a sample of 276 healthy men and women was taken.

n₁= 96 had few social outlets

n₂= 105 had six or more activities

These two groups were exposed to the cold virus and the following proportions of individuals that got sick were obtained:

p'₁= 0.62 (62% of the people with few social outlets got sick)

p'₂= 0.35 (35% of the people with six or more activities got sick)

The study variables are X₁: number of people with few social outlets that got sick after being exposed to the cold virus, in a sample of 96, and X₂: number of people with six or more activities that got sick after being exposed to the cold virus, in a sample of 105.

You have to construct a 99% CI for the difference these two populations since there is no specific order given I'll estimate: p₁ - p₂

(p'₁ - p'₂) ± Z_{1-\alpha /2} * \sqrt{\frac{p'_1(1-p'_1)}{n_1} +\frac{p'_2(1-p'_2)}{n_2} }

Z_{1-\alpha /2}= Z_{0.995}= 2.586

(0.62-0.35) ± 2.586 \sqrt{\frac{0.62*0.38}{96} +\frac{0.35*0.65}{105} }

[0.094; 0.045]

With a 99% confidence level, you'd expect that the difference between the proportion of people with few social outlets that got sick and the proportion of people with six or more social activities that got sick after being exposed to the cold virus.

I hope it helps!

8 0
2 years ago
A town manager reports that revenue for a given year is $563,878. The budget director predicts the revenue will increase by 7% p
snow_lady [41]

Answer:

below

Step-by-step explanation:

the yearly multiplier

= 1.07

After 6 years revenue wii, b 563878 * 1.07^6

= $846,228.83.

7 0
2 years ago
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