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Len [333]
3 years ago
12

How to solve this problem that don't nor know

Mathematics
2 answers:
Paraphin [41]3 years ago
6 0
Well, for number 23 you have to figure out what n is. In order to do that you have to multiply different numbers to figure out the number for n. I hope this helps and have a wonderful day.
sasho [114]3 years ago
3 0
21) - 4 + 7 (1 - 3m) = - 4 + 7 - 21m = 3 - 21m
23) - 2n - (9 - 10n) = - 2n - 9 + 10n = 8n - 9
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Can someone please help me with this question!!!
Elena-2011 [213]

Answer:

32

Step-by-step explanation:

x+102=4x+6

102=3x+6

96=3x

32=x

Hope this helps!!!

5 0
3 years ago
the mean household income for a certain state is $71,000 with a standard deviation of $10,000 assuming a normal distribution abo
Vesnalui [34]

Answer:

About 95% of households have an income over $54,550

Step-by-step explanation:

95% is a probability of around 0.95

So we start by calculating the z-score with a probability of 0.95

We can use the standard normal distribution table for this

the z-score is -1.645

Mathematically;

z-score = (x-mean)/SD

-1.645 = (x-71,000)/10,000

10,000 * -1.645 = x-71,000

-16450 = x - 71000

x = 71,000 - 16450

x = 54,550

7 0
3 years ago
The legs of an isosceles triangle have lengths x + 1 and -x + 7 . The base has length 3x - 3. What is the length of the base?
Brilliant_brown [7]

The base is 6.

In order to find this, we can set the legs equal to each other since legs have the same length in an isosceles triangle.

x + 1 = -x + 7

2x + 1 = 7

2x = 6

x = 3

Now that we have the value for x, we can plug into the equation to get the value for the base.

3x - 3 = base

3(3) - 3 = base

9 - 3 = base

6 = base

8 0
3 years ago
Read 2 more answers
What is the answer to -28 + 38
anzhelika [568]

What if I wrote          +  38 - 28  .

Would you be able to solve it that way ?

They're both the same number.

6 0
3 years ago
Which of the following statements best describes the effect of replacing the graph of f(x) with the graph of f(x) + 4?
Lemur [1.5K]
There are no statements to choose from but the translation would be that the graph is moved vertically up by 4 units.
5 0
3 years ago
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