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3 years ago

X+10y-z+2x-3y+z what is the answer

Mathematics

2 answers:

DaniilM [7]3 years ago

7 0

x+10y-z+2x-3y+z
=x+2x+10y-3y+z-z (positive and negative 'z' will cut)
=3x+7y

kari74 [83]3 years ago

3 0

You have to add/subtract all the common variables the answer is 3x+7y

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Here is a picture of a math problem

tresset_1 [31]

Answer:

Step-by-step explanation:

Area = Base × Height

$10 = 2 \frac{1}{7} \times h \\\\ 2 \frac{1}{7} = \frac{7}{7} + \frac{7}{7} + \frac{1}{7} = \frac{15}{7} \\\\ 10 = \frac{10}{1} = \frac{70}{7} \\\\h \times \frac{15}{7} = \frac{70}{7} \\\\ h = \frac{\frac{70}{7}}{\frac{15}{7}} \\\\\ h = \frac{70}{7} \times \frac{7}{15} \\\\ h = \frac{70}{15} \\\\ h = \frac{14}{3} \\\ h = 4 \frac{2}{3}$

I hope I helped you.

3 0

3 years ago

Let A and B be two disjoint events such that P(A) = 0.47 and P(B) = 0.3.<br><br> What is P(A or B)?

Alchen [17]

<h3>Answer: 0.77</h3>

Work Shown:

P(A or B) = P(A) + P(B)

P(A or B) = 0.47 + 0.30

P(A or B) = 0.77

Notes:

The formula only works if A and B are disjoint, aka mutually exclusive
If A and B are not disjoint, then use this formula: P(A or B) = P(A) + P(B) - P(A and B)

6 0

2 years ago

Read 2 more answers

Is -4, 12, -36, 108, -324 arithmetic or geometric

kumpel [21]

Answer: Geometric

Step-by-step explanation: An arithmetic sequence is a sequence with a common difference. In other words, it has a number that is repeatedly added or subtracted to reach the next term. In this problem, that's not the case. We are not going up or down by the same number which means it's geometric.

4 0

3 years ago

Jason inherited a piece of land from his great-uncle. Owners in the area claim that there is a 45% chance that the land has oil.

Zina [86]

If owners told the truth, then the probability is always the same: 0,45.
0,45*0,80 = 0,36

Supposing trust your kit only, then there was 0,8 probability for correct measurement, meaning there is 0,2 chance for incorrect measurement.
If incorrect measurement means displaying a result opposite then truth, then there is 0,2 probability for oil.
If incorrect measurement means displaying a random result (assuming distribution of correct (by fortune) or incorrect answers is 50-50), then there is 0,2*0,5 probability for oil. That is 0,1 probability for oil.

If somehow the answer you are looking for consists of believing the owners and the kit equally, then there are two options. You get both options by applying 0,45 chance to results from previous two cases.
First solution would be 0,2*0,45, that is 0,09 chance.
Second solution would be 0,1*0,45, that is 0,045 chance.

Since none of these answers matches any of given options, I am really interested in calculations by other people. Please do correct me if I made a mistake in my calculations.

6 0

3 years ago

Change each to an Improper Fraction

zloy xaker [14]

Answer:

31/7

11/7

67/9

Step-by-step explanation:

6 0

1 year ago