In 2017, there were about 21 million teenagers (aged 13-17) in the United States. They each
1 answer:
The Number of text messages sent in a month is 1.68 ×
Step-by-step explanation:
Step 1 :
Total number of teenagers in United States = 21 million
Average text messages sent per month = 800
We need to find the number of text messages sent each month
Step 2 :
The number of text messages in a month can be computed by taking the product of the total number of teenagers and average messages sent per month
Therefore
Number of text messages that is sent in a month = 21 million × 800
= 21 × × 800
= 168 × = 1.68 ×
Step 3 :
Answer :
The Number of text messages that is sent in a month is 1.68 ×
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Hello!
Recall that the first number in the coordinate is 'x', and the second number is 'y'.
Since all the answer choices have '0' as the x-coordinate, we can substitute in this value for 'x' in the equation for the line to solve for the correct y-value.
y = 2(0) + 5
y = 5
The only answer choice that has this combination is D, (0, 5). This is the correct answer.
Answer:
y = 4
Step-by-step explanation:
Given that y varies jointly with x and z then the equation relating them is
y = kxz ← k is the constant of variation
To find k use the condition y = 16 when x = 4 and z = , that is
16 = k × 4 × = 2k ( divide both sides by 2 )
8 = k
y = 8xz ← equation of variation
When x = 2 and z = , then
y = 8 × 2 × = 16 ×
= 4