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JulsSmile [24]
2 years ago
12

Let the function f be defined by f (x) = 5x - 2a,

Mathematics
1 answer:
seraphim [82]2 years ago
6 0

Answer: 5

Step-by-step explanation:

f(10)=50-2a\\\\f(5)=25-2a\\ \\ f(10)+f(5)=75-4a=55 \implies a=5

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A parallelogram cant be a cross section of a triangular prism? never true,sometimes true,or always true
Sedaia [141]

Answer:

I wanna say never true...Hope thats right

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Identify the percent of change as an increase or a decrease 3/8 to 7/8
USPshnik [31]
Not 100% sure this is correct but this seems correct.

3 0
3 years ago
The table shows transactions from five different bank accounts.
lisabon 2012 [21]

Answer:

 New Account Balance ($)

Acc #         Old Acc Balance ($)      Trans Amount ($)      New Acc Balance ($)

1                       352                                       -48                      304

2                      432                                      +80                      512

3                       75                                       -100                     -25

4                       40                                        52                       12

5                      -10                                        -20                     -30

5 0
2 years ago
An engineer is comparing voltages for two types of batteries (K and Q) using a sample of 75 type K batteries and a sample of 46
lorasvet [3.4K]

The decision rule for rejecting the null hypothesis, considering the t-distribution, is of:

  • |t| < 1.9801 -> do not reject the null hypothesis.
  • |t| > 1.9801 -> reject the null hypothesis.

<h3>What are the hypothesis tested?</h3>

At the null hypothesis, it is tested if there is not enough evidence to conclude that the mean voltage for these two types of batteries is different, that is, the subtraction of the sample means is of zero, hence:

H_0: \mu_1 - \mu_2 = 0

At the alternative hypothesis, it is tested if there is enough evidence to conclude that the mean voltage for these two types of batteries is different, that is, the subtraction of the sample means different of zero, hence:

H_1: \mu_1 - \mu_2 \neq 0

We have a two-tailed test, as we are testing if the mean is different of a value.

Considering the significance level of 0.05, with 75 + 46 - 2 = 119 df, the critical value for the test is given as follows:

|t| = 1.9801.

Hence the decision rule is:

  • |t| < 1.9801 -> do not reject the null hypothesis.
  • |t| > 1.9801 -> reject the null hypothesis.

More can be learned about the t-distribution in the test of an hypothesis at brainly.com/question/13873630

#SPJ1

3 0
1 year ago
Question 1 (2 points)<br> Find the slope and y-intercept for the graph below.<br> m<br> b
Maru [420]

Answer:

The slope is:

\frac{5}{2}

The y-intercept is:

-3

3 0
3 years ago
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