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Katarina [22]
3 years ago
6

Solve for x. 42-3x=30. Please and thank you! will mark brainliest!

Mathematics
2 answers:
o-na [289]3 years ago
4 0
X=4

Explanation: 42-3x=30
So you subtract 42 on each side leaving you with -3x=-12 and then you divide by -3 on each side meaning -12/-3 which leaves you with x=4



olganol [36]3 years ago
3 0

Answer:

x = 4

Step-by-step explanation:

Isolate the variable by diving each side by factors that don't contain the variable.

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10=c+d<br> c is one more than d <br> what is the value of c?<br>with working out
Leya [2.2K]
C= 5.5 I'm pretty sure that's the answer

d= 4.5 and c+ 5.5
Because 4.5 plus 1.0 = 5.5
since c is one more than d

5.5 plus 4.5 = 10
5 0
3 years ago
Find the mean of the following<br> data set.<br> 1,1,2,4,6,7,7,8,9,10,12,13,17,17,18
lisabon 2012 [21]

Answer:

8.8

Step-by-step explanation:

Add all numbers together to get 132

All number of numbers together to get 15

Divide the sum of all numbers by the number of numbers:

132/15

8.8

pls mark brainliest!

6 0
2 years ago
Suppose that you are a city planner who obtains and sample of 20 randomly selected members of a mid-sized town in order to deter
Dmitry_Shevchenko [17]

Answer:

The critical value for the 95% confidence interval is z = 1.96.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96.

The critical value for the 95% confidence interval is z = 1.96.

5 0
3 years ago
Which might be a better way to evaluate 1150 divided by 46: drawing base-ten diagrams or using the partial quotients method ? Ex
hammer [34]

Answer:

idk sounds like a good question

Step-by-step explanation:

8 0
3 years ago
What is the equation of the graph in slope intercept form
Crank

Answer:

y=1/4x-4

Step-by-step explanation:

slope is 1/4 and the y intercept is -4

3 0
3 years ago
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