All categories

3 years ago

Please help me do the substitution for this problem and the check thank you

Mathematics

1 answer:

Alexxandr [17]3 years ago

8 0

(-2,0) instead of substitution, you can use elimination which the 3x's will cancel out and you solve the system regularly

You might be interested in

Tamika makes a 5.5% commission selling electronics. How much commission does she make if she sells a flat-screen TV for $10,000?

Sati [7]

The answer is A. $550

7 0

3 years ago

Read 2 more answers

Here are the prices of five new pairs of hockey skates, in dollars: 59, 60, 65, 99, 175. The standard deviation is about $49. If

Phoenix [80]

Answer:

The standard deviation of the new data will be increased as compared to the previous standard deviation of the data.

Step-by-step explanation:

The prices are given to be : 59, 60, 65, 99, 175

Standard deviation = $49

Now, if we add or subtract any constant value to each of the terms then the standard deviation remains unchanged.

But, we add a new price in the given data that is $450

$\text{New standard deviation = }\sqrt{\frac{\sum (\bar{x}-x_i)^2}{n}}\\\\\bar{x}\text{ is the mean of data after adding 450 and}\\x_i\text{ are the price values of the sample data}$

Hence, Standard deviation is calculated to be 139.5

Therefore, the standard deviation of the new data will be increased as compared to the previous standard deviation of the data.

6 0

3 years ago

Read 2 more answers

Find the whole.

8_murik_8 [283]

It would be 39 I hoped I help

5 0

3 years ago

Find the value for the side marked below.

GarryVolchara [31]

Answer:

$65.4$

Step-by-step explanation:

In any right triangle, the cosine of an angle is equal to its adjacent side divided by the hypotenuse, or longest side, of the triangle.

Therefore, we have:

$\cos 61^{\circ}=\frac{y}{135},\\t=135\cos 61^{\circ}=65.4492987333\approx \boxed{65.4}$

3 0

3 years ago

An inspector at a factory examines 320 drinking glasses, and 12 of them have defects. The inspector then examines 560 drinking g

fgiga [73]

Answer: 539 without defects

Step-by-step explanation: Im pretty sure we have to turn 12/320 into a percent, which is 0.0375, or 3.75%

So with that information, we need to find 3.75% of 560.

do 0.0375 x 560, which is 21.

21 are defects, so do 560 - 21 is 539.

6 0

2 years ago

Read 2 more answers