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3 years ago

I need help on this please I'm stuck on this

Mathematics

2 answers:

ss7ja [257]3 years ago

7 0

The answer is 6.
6/3 = 4/2
2 = 2

Anarel [89]3 years ago

5 0

The answer is 6. You can show working by doing:

a/3 = a-2/2

Cross multiply to give you:

2a = 3(a-2)
2a = 3a - 6
-a = -6

So a = 6

You might be interested in

Regina has 16 pencils. James has 3 times as many pencils as Regina.

serg [7]

Answer:

Step-by-step explanation:

16 + 16 + 16 = 16 x 3

16 x 3 = 48

16 + 16 = 32

32 + 16 = 48

5 0

3 years ago

Find the the equation of the line passing through the points (3,3) and (4, 5)

Nostrana [21]

Answer:

y = 2x - 3

Step-by-step explanation:

Given:

(3, 3) and (4, 5)

Solve:

Find the slope (m) between the two points:

m = (y2 - y1)/(y2 - 1)

(x1, y1) = (3, 3)

(x2, y2) = (4, 5)

m = (5 - 3)/(4 - 3)

= 2/1

m = 2

Slope-intercept form (y = mx + a):

y = 2x + a

To find a, plug in one of the points into the equation:

3 = 2(3) + a

3 = 6 + a

3 - 6 = a

a = -3

y = 2x - 3

6 0

2 years ago

An electronics company just finished designing a new tablet computer and is interested in estimating its battery-life. A random

Alika [10]

Answer:

$6 \pm 2.861(0.3354)$

Step-by-step explanation:

We have the standard deviation for the sample, so we use the t-distribution to solve this question.

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 = 20 - 1 = 19

99% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 19 degrees of freedom(y-axis) and a confidence level of $1 - \frac{1 - 0.99}{2} = 0.995$ . So we have T = 2.861.

The margin of error is:

$M = T\frac{s}{\sqrt{n}} = 2.861\frac{1.5}{\sqrt{20}} = 2.861(0.3354)$

In which s is the standard deviation of the sample and n is the size of the sample.

The format of the confidence interval is:

$S_{M} \pm M$

In which $S_{M}$ is the sample mean

$6 \pm 2.861(0.3354)$

7 0

3 years ago

The nth term of a sequence is 2n - 6

Serjik [45]

Answer:

Step-by-step explanation:

2n - 6

a) n = 1 ; 2n - 6 = 2*1 - 6 = 2 - 6 = -4

n = 2 ; 2n - 6 = 2*2 - 6 = 4 - 6 = -2

n = 3 ; 2n - 6 = 2*3 - 6 = 6 - 6 = 0

b) n=10; 2n - 6 = 2*10 - 6 = 20 - 6 = 14

6 0

3 years ago

Read 2 more answers

Bank account<br> A has $750.92 Account A changes by -216.38 how much does bank account A have now

koban [17]

Answer:

534.54

Step-by-step explanation:

750.92 - 216.38 = 534.54 hope this helps :)

3 0

2 years ago