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lisabon 2012 [21]

3 years ago

5

Here are some points for all who are working hard and over coming challenges and helping <3 ( p.s there is another one in adv

ance placement!! HURRY!!)

1 answer:

ivann1987 [24]3 years ago

6 0

Answer:

Aw thanks

Step-by-step explanation:

I am struggling a lot so this really meant a lot

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#9. Solve: 8x + 5 = 3x + 15<br><br> X = 4<br> x = 2<br> x = 20/11<br> x = 20

Jobisdone [24]

Answer:

x = 2

Step-by-step explanation:

8x + 5 = 3x + 15

8x - 3x + 5 = 3x - 3x + 15

5x + 5 = 15

5x + 5 - 5 = 15 - 5

5x = 10

5x / 5 = 10 / 5

x = 2

6 0

2 years ago

What is 1/3 times 1/2

katrin [286]

The answer is 1/6 dkdjdkvndkd

4 0

2 years ago

Dr. Ashby is studying the heart rate of adult men. Preliminary data suggests that the standard deviation of heart rates for adul

jok3333 [9.3K]

Answer:

n=42 adult men

Step-by-step explanation:

-The minimum sample size to get a desired margin of error, E is calculated using the formula:

$n\geq( \frac{z\sigma}{E})^2$

-Given that $\sigma=7.5, \ \ E=3\ , \ z_{0.005}=2.58$ , we can substitute to solve for n in the above formula:

$n\geq (\frac{z\sigma}{E})^2\\\\\therefore n=(\frac{z_{\alpha/2}\sigma}{E})^2\\\\=(\frac{2.58\times7.5}{3})^2\\\\=41.6025\approx42$

Hence, the desired minimum sample size, n is 42 adult men.

4 0

3 years ago

How to solve 14x + 2 = 6 (x - 0)

Sergeu [11.5K]

Answer:

Has not solution.

Step-by-step explanation:

14x÷2 = 6(x - 0)

14x÷2 = 6*x + 6*-0

14x÷2 = 6x - 0

14x = 2*6x

14x ≠ 12x

then:

This equation has not solution.

8 0

3 years ago

D=2r please help me I’m doing a test

AysviL [449]

Answer:

D=2r

Step-by-step explanation:

all u do is get the diameter os for d so lets say d is 3 it will be like 3=2r now u need is the radis u need to divide the diameter by 2 and thwre u go

7 0

3 years ago