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svp [43]
3 years ago
13

Sarah is y years old now. How could you represent her age 5 years ago?

Mathematics
2 answers:
postnew [5]3 years ago
6 0
You would have to subtract 5 from her age so the equation would by y-5
Serhud [2]3 years ago
4 0

y-5..................................................


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I need help pleasee please
Volgvan

Answer:

We just have to do 15 ÷ 15/4 = 15 * 4/15 = 4.

7 0
3 years ago
Find p and q for which the linear eqn has infinite solutions
jekas [21]

Answer:

p= 2.5

q= 7

Step-by-step explanation:

The lines should overlap to have infinite solutions, slopes should be same and y-intercepts should be same.

Equations in slope- intercept form:

6x-(2p-3)y-2q-3=0 ⇒ (2p-3)y= 6x -2q-3 ⇒ y= 6/(2p-3)x -(2q+3)/(2p-3)

12x-( 2p-1)y-5q+1=0 ⇒ (2p-1)y= 12x - 5q+1 ⇒  y=12/(2p-1)x - (5q-1)/(2p-1)

Slopes equal:

6/(2p-3)= 12/(2p-1)

6(2p-1)= 12(2p-3)

12p- 6= 24p - 36

12p= 30

p= 30/12

p= 2.5

y-intercepts equal:

(2q+3)/(2p-3)= (5q-1)/(2p-1)

(2q+3)/(2*2.5-3)= (5q-1)/(2*2.5-1)

(2q+3)/2= (5q-1)/4

4(2q+3)= 2(5q-1)

8q+12= 10q- 2

2q= 14

q= 7

7 0
3 years ago
What is the value of log16 4?<br> 4 <br> 1/2 <br> 1/4<br> 2
igor_vitrenko [27]
The answer will be 1/2
5 0
3 years ago
What is 0.386,0.3,0.683,0.836 from greatest to least
Ymorist [56]

Answer:0.3, 0.386,0.683,0.836


Step-by-step explanation:

You look left to right in the numbers (0.12,0.12)

4 0
3 years ago
Read 2 more answers
A recent survey estimated that 19 percent of all people living in a certain region regularly use sunscreen when going outdoors.
serg [7]

The correct option is: (E) It is plausible that the percent of all people living in the region who regularly use sunscreen is 18.5%.

<u>Step-by-step explanation:</u>

The margin of error is a statistic expressing the amount of random sampling error that occurred due to miscalculation and survey results. The margin error is usually a small amount of error.

Generally 5% of margin of error is common and acceptable. When the percentage of the margin of error increases, the confidence in the report result will be reduced.

The recent survey reveals that 19% of the people living in a certain region regularly use sunscreen when going outdoors. The permissible margin of error in this survey is 1%.

Probably the percentage of people using sunscreen in the particular region will be <u>18.5%. </u>

5 0
3 years ago
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