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nata0808 [166]
3 years ago
5

Solve for : can someone plss help I dont remember how to solve this ​

Mathematics
1 answer:
ArbitrLikvidat [17]3 years ago
7 0

Answer:

x = 18

Step-by-step explanation:

7x - 26 = 5x + 10

7x - 26 - 5x - 10 =0

2x - 36 = 0

2x = 36

x = 18

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How many gallons each of 25 alcohol and 5 alcohol should be mixed to obtain 20 gal of 15 alcohol?
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Question 1143037: How many gallons each of 25​% alcohol and 5​% alcohol should be mixed to obtain 20 gal of 16​% ​alcohol? That equals 3.2 gallons pure, checks.
4 0
3 years ago
A point is randomly chosen in the circle shown below.
quester [9]

Answer:

in a region with a letter

Step-by-step explanation:

For a certainty, then probability is 1.

That means sum of probability of all events in the sample space.

This means P(A)+P(B)+P(C)+P(D)=1

This is equivalent to:

P(A or B or C or D)=1

Hence for certainty, the region must be:

A or B or C or D

So the correct answer is in a region with a letter.

7 0
2 years ago
From a population of 200,000,000 elements, the standard deviation is known to be 14. A sample of 49 elements is selected. It is
Talja [164]

Answer:

The standard error of the mean = 2

Step-by-step explanation:

Given that:

The standard deviation σ = 14

The sample size n = 49

The sample mean \overline x = 56

The formula for calculating the standard error can be expressed as:

S.E = \dfrac{\sigma}{\sqrt{n}}

S.E = \dfrac{14}{\sqrt{49}}

S.E = \dfrac{14}{7}

S.E = 2

Therefore, the standard error of the mean = 2

4 0
2 years ago
I Need help please :>
Bezzdna [24]
1. What is the total mass of the items in the wheel barrow?
9300g


2. What’s the mass of items, in kg, left in the barrow?
4.9kg
5 0
3 years ago
56 out of the 56 employees at the sports shop are part-time employees. What percentage of the employees at the sports shop work
ankoles [38]

Answer:

100%

Step-by-step explanation:

Since 56/56 employees at the sports shop work part time, that means 100% of them do, or all of them.

7 0
2 years ago
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