3 years ago

375 A system of equations is shown below.

Mathematics

1 answer:

jolli1 [7]3 years ago

8 0

B is the one I would go with, multiplying everything by 3 in the equation 3 would eliminate y.

You might be interested in

Can any one help me 11 points no lnks pls. Just help with any of these

zvonat [6]

Answer:

5. m<1 = 114 degrees

m<2 = 66 degrees

6. 2x + 3x + 4x = 9x = 180, x = 20

7. 3

8. 1/3

<em>Hope that helps!</em>

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Divide -24 and 7 ENTER YOUR ANSWER AS A MIXED NIKBER

Natali [406]

Answer:

-3 3/7

Step-by-step explanation:

Hope this helps!:)

4 0

2 years ago

What is the source of Yangtze river

belka [17]

Answer:

Qinghai

Step-by-step explanation:

8 0

3 years ago

Confidence Interval Application Many people feel that the drying of pavement marking paint is much too slow. You spend several d

djyliett [7]

Answer:

The sample size is $n =33$

Step-by-step explanation:

From the question we are told that

The margin of error is E = 1.5 seconds

The standard deviation is s = 4 seconds

Given that the confidence level is 97% then the level of significance is mathematically represented as

$\alpha =( 100 -97)\%$

=> $\alpha = 0.03$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 2.17$

Generally the sample size is mathematically represented as

$n =[ \frac{Z_{\frac{\sigma }{2 } } * \sigma }{E} ]^2$

=> $n =[ \frac{2.17 * 4 }{1.5} ]^2$

=> $n =33$

7 0

3 years ago

I'LL GIVE BRAINLIEST:

ioda

Answer:

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers