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Nesterboy [21]
2 years ago
7

3х + 5 = 17what is the answer to this problem​

Mathematics
2 answers:
Paladinen [302]2 years ago
5 0

Answer:

X=4

Step-by-step explanation:

17-5=12, then 12÷3=4, so X=4

timama [110]2 years ago
5 0
X =4

Step by step explanation:
5-17=12
12 divided by 3= ➡️4⬅️
4x3=12+5=17
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The perimeter of one of the rectangular playrooms at Miss Pittypat's Day Care is 72 feet. It's width is 10 feet.
Alex17521 [72]

Answer:

The area of the rectangular playroom is 260 feet² .

Step-by-step explanation:

Given:

The perimeter of the rectangular playroom is 72 feet and it's width is 10 feet.

Now, to find its area we need the length .

So, putting the formula of perimeter we get it's length:

Let the length be l .

Perimeter = 2( length + width)

72=2(l+10)

72=2l+20

subtracting both sides from 20:

72-20=2l+20-20

52=2l

Dividing both sides by 2:

52\div2=2l\div2

26=l

Length is 26 feet.

And, to get the area we put the formula of finding the area:

Area=length\times width

Area=26\times 10

Area=260

Therefore, the area of the rectangular playroom is 260 feet² .

3 0
3 years ago
What kind of angles are ADB and BDC
Taya2010 [7]

Answer:

Triangles.

Step-by-step explanation:

6 0
3 years ago
The distribution of head circumference for full term newborn female infants is approximately normal with a mean of 33.8 cm and a
enyata [817]

Using the normal distribution, it is found that 95.65% of full term newborn female infants with a head circumference between 31 cm and 36 cm.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

Z = \frac{X - \mu}{\sigma}

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The mean and the standard deviation are given, respectively, by:

\mu = 33.8, \sigma = 1.2

The proportion of full term newborn female infants with a head circumference between 31 cm and 36 cm is the <u>p-value of Z when X = 36 subtracted by the p-value of Z when X = 31</u>, hence:

X = 36:

Z = \frac{X - \mu}{\sigma}

Z = \frac{36 - 33.8}{1.2}

Z = 1.83

Z = 1.83 has a p-value of 0.9664.

X = 31:

Z = \frac{X - \mu}{\sigma}

Z = \frac{31 - 33.8}{1.2}

Z = -2.33

Z = -2.33 has a p-value of 0.0099.

0.9664 - 0.0099 = 0.9565.

0.9565 = 95.65% of full term newborn female infants with a head circumference between 31 cm and 36 cm.

More can be learned about the normal distribution at brainly.com/question/24537145

#SPJ1

4 0
2 years ago
Adozen of notebooks cost Rs 480. How Much will 7 note book cost? ​
Savatey [412]

Answer: Rs 280

A dozen = 12

12 notebooks --> Rs 480

1 notebooks --> 480/12 =Rs 40

7 notebooks --> 40 * 7 = Rs 280

8 0
2 years ago
Read 2 more answers
Consider the functions f(x) = 5x – 2, g(x) = 5x² + 2 and r(x) = –2x + 4.
klemol [59]

Answer:

f(-2x+4) = -10x+18

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
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