2 years ago

Math question. please help3+2x+4x=15

Mathematics

1 answer:

Rzqust [24]2 years ago

6 0

2x+4x=6x

6x+3=15

6 multiplied by 2 = 12

12 +3=15

so x =2

You might be interested in

Suppose a sheet of 100 stamps is 0.91 millimeters thick. If a stack of sheets contains 100,000 stamps, how many millimeters thic

Rashid [163]

Answer:

9.1 x 10²

Step-by-step explanation:

6 0

2 years ago

To estimate the mean of a population with unknown distribution shape and unknown standard deviation, we take a random sample of

Naddika [18.5K]

Answer:

$t_{critical} = \pm 1.7793$

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 64

Sample mean = 22.3

Sample standard deviation = 8.8

We want to estimate 92% confidence interval.

92% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

Degree of freedom = n - 1 = 63

$t_{critical}\text{ at degree of freedom 63 and}~\alpha_{0.01} = \pm 1.7793$

$22.3 \pm 1.7793(\dfrac{8.8}{\sqrt{64}} ) = 22.3 \pm 1.95723 = (20.34,24.26)$

7 0

3 years ago

HELP ME 2 PICTURES BTW 50 POINTS

mr Goodwill [35]

Answer:

7 and 9 are alternate interior angles

Step-by-step explanation:

4 and 11 are corresponding angles

1 and 7 are vertical angles

4 0

2 years ago

K/2 - 1 = 1 solve for k

Nana76 [90]

K=4 would be the answer you’re looking for

6 0

3 years ago

What is the formula for finding the vertical distance between two points on a coordinate plane?

Sindrei [870]

<span> (y2-y1) that's the formula </span>

7 0

2 years ago