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3 years ago

Here are a few pairs of positive numbers whose sum is 50.

Mathematics

1 answer:

Alenkinab [10]3 years ago

8 0

Answer:

I think it is 49, 96, 400 if you're multiplying

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2(4x+9)=8x+18 solve for x

Olegator [25]

2(4x+9)=8x+18

8x+18=8x+18

8x=8x

x=x

8 0

3 years ago

Read 2 more answers

What is the range the 3rd side of the triangle can be with sides 15 cm and 14 cm?

lawyer [7]

Answer: if you are referring to a right triangle the third side might be 20.5cm

Step-by-step explanation:

I just used Pythagorean theorem in which c^2=a^2+b^2

so this is c^2= 225 + 196 and then you get c^2= 421 and finally you get the square root of 421 so this way you finally get 20.5 cm

Hope I helped

Pdt: a=15 b=14

7 0

3 years ago

Help please!!!,,,,,,

sdas [7]

Answer: 2x+5y=100 and x+y=38

Step-by-step explanation:

6 0

2 years ago

Solve for h.<br><br> –0.62 + 8.35 + 3.9h = –6.55 + 1.1h

stepan [7]

Answer:

$- 0.62 + 8.35 + 3.9h = - 6.55 + 1.1h \\ \\ 3.9h - 1.1h = - 6.55 + 0.62 - 8.35 \\ \\ 2.8h = - 14.28 \\ \\ h = \frac{ - 14.28}{2.8} \\ \\ h = \frac{ - 142.8}{28} \\ \\ h = - 5.1$

I hope I helped you^_^

8 0

3 years ago

You intend to estimate a population mean with a confidence interval. You believe the population to have a normal distribution. Y

Luda [366]

Answer:

T = 4.541

Step-by-step explanation:

We don't have the standard deviation for the population, so we use the t-distribution.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 4 - 1 = 3

98% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 3 degrees of freedom(y-axis) and a confidence level of $1 - \frac{1 - 0.98}{2} = 0.99$ . So we have T = 4.541

6 0

3 years ago