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Serhud [2]
2 years ago
7

2 tables and 3 chairs together cost $1900 wher93 tables and 2 chairs together cost $2600. Find the cost of a table and a chair.​

Mathematics
1 answer:
valentina_108 [34]2 years ago
6 0

Answer:

you can solve all your problems posted by this method ...

Step-by-step explanation:

mark me as brainliest ❤️

...............

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Three items weighing 5.28 kg 3.68 kg and 5.49 kg are to be posted but are found to be overweight. By how much does the total wei
NikAS [45]

Answer:

1.69 kg

Step-by-step explanation:

add than subtract

yep thats it

3 0
2 years ago
Solve the system of equations by elimination.
n200080 [17]

Answer:

Step-by-step explanation:

1. 2x - 9y = 23

2 x = 9 y + 23

y = (2 x)/9 - 23/9

2 x - 9 y - 23 = 0

2. 5x - 3y = -1

5 x + 1 = 3 y

y = (5 x)/3 + 1/3

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I belive that should help you out a bit :D

4 0
2 years ago
Read 2 more answers
According to the WHO report, girls who are 2-years old have a mean head circumference of 47.18cm with a standard deviation of 1.
Verdich [7]

Answer:

1. z = -1.91429

The z score tells us that the head circumference of the girl with the down syndrome ( 44.5 cm) is 1.91429 standard deviations below the mean or average head circumference

2. 2.7792%

Step-by-step explanation:

1. Relative to the WHO data, what is this girls z-score?

z score formula is:

z = (x-μ)/σ, where

x is the raw score = 44.5 cm

μ is the population mean = 47.18cm

σ is the population standard deviation = 1.40cm

z = 44.5 - 47.18/1.40

z = -1.91429

What does the z score tell us?

The z score tells us that the head circumference of the girl with the down syndrome ( 44.5 cm) is 1.91429 standard deviations below the mean or average head circumference

2. Using the WHO data in a normal model, what percentage of the girls has a head circumference that is smaller than the girl with Down's Syndrome?

z score = -1.91429

Probability value from Z-Table:

P(z =-1.91429) = P(x<44.5) = 0.027792

Converting to percentage = 0.027792 × 100

= 2.7792%

6 0
2 years ago
JOIN MY MEETING <br><br><br>ID -- 9384026088 <br><br><br>password 1234​
erica [24]

<em>Refer</em><em> </em><em>to</em><em> </em><em>the</em><em> </em><em>attachment</em>

4 0
2 years ago
which two points should the line of best fit go through to best represent the data in the scatter plot (1,16) and (2,15) (1,16)
Rashid [163]
You simply have to plot the point and draw a line that passes through most of them
6 0
3 years ago
Read 2 more answers
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