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4 years ago

Three different ways to make 12

Mathematics

2 answers:

victus00 [196]4 years ago

7 0

8x2 20-8 3x4 Hope it helped

iVinArrow [24]4 years ago

3 0

2+10, 10+2 2+5+2+3, 5+2+2+3, 2+2+2+2+2+2, and 2+4+6 those are the ways to make 12.

If your talking multiplication, 1x12, 2x6, 3x4, 4x3, and 6x2.

if your talking subtraction, 12-0, 13-1, 14-2, 15-3, 16-4, 17-5, 18-6, and 19-7.
hope you have found my answers useful

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Evaluate the expression shown below and write your answer as a mixed number in simplest form.

Dahasolnce [82]

The answer would be -8 1/6.

3 0

3 years ago

Suppose a large shipment of laser printers contained 18% defectives. If a sample of size 340 is selected, what is the probabilit

Anestetic [448]

Answer:

The probability that the sample proportion will be greater than 13% is 0.99693.

Step-by-step explanation:

We are given that a large shipment of laser printers contained 18% defectives. A sample of size 340 is selected.

Let $\hat p$ = the sample proportion of defectives.

The z-score probability distribution for the sample proportion is given by;

Z = $\frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n}} }$ ~ N(0,1)

where, p = population proportion of defective laser printers = 18%

n = sample size = 340

Now, the probability that the sample proportion will be greater than 13% is given by = P( $\hat p$ > 0.13)

P( $\hat p$ > 0.13) = P( $\frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n}} }$ > $\frac{0.13-0.18}{\sqrt{\frac{0.13(1-0.13)}{340}} }$ ) = P(Z > -2.74) = P(Z < 2.74)

= 0.99693

The above probability is calculated by looking at the value of x = 2.74 in the table which has an area of 0.99693.

5 0

4 years ago

Three less than a 6 times a number is 39. find the number

Vanyuwa [196]

Using the problem, create an equation to find the number (x).
Three less than (so x minus 3) 6 times a number (6 times x) equals 39.

6x-3=39, solve for x.
x = 7

5 0

4 years ago

Point P(−5.15, −7.05) is a reflection across the x-axis of which of the following points?

Andrei [34K]

Answer: (5.15, -7.05)

Since it is a reflection across the x-axis, you would need to flip it to the other side of the x-axis to determine the new point

8 0

3 years ago

A chemist is using 351 milliliters of a solution of acid and water. If 14.1% of the solution is acid, how many milliliters of ac

stepan [7]

49.491 millimeters of acid is present

Solution:

Given that, chemist is using 351 milliliters of a solution of acid and water

14.1% of the solution is acid

To find: Milliliters of acid present

From given statement,

Solution of acid and water = 351 ml

14.1% of the solution is acid, which means that 14.1 % of 351 ml is acid

Therefore,

Milliliters of acid present = 14.1 % of 351 ml

Here "of" means multiplication

Therefore,

$\text{ Milliliters of acid present } = 14.1 \% \times 351$

$\rightarrow 14.1 \% \times 351\\\\\rightarrow \frac{14.1}{100} \times 351\\\\\rightarrow 0.141 \times 351 = 49.491$

Thus 49.491 millimeters of acid is present

6 0

4 years ago