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3 years ago

The water depth in a pond is initially 48 inches and decreases at a rate of 0.5 inches per day

Mathematics

2 answers:

FromTheMoon [43]3 years ago

8 0

Answer:

Step-by-step explanation:

y=48-0.5 x

when x=8

y=48-4=44 inch

gayaneshka [121]3 years ago

7 0

Answer: email me at [email protected] my name is Makayla Best

Step-by-step explanation:

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After dans holiday. Dan has 50 new email messages in his inbox . 13 of them are attachements. what proportion of the email messa

dimulka [17.4K]

Answer:

26%

Step-by-step explanation:

Given that Dan has 59 new email messages and 13 have attachment then the proportion that have attachments may be expressed as a ratio of the number with attachments to the total number of emails.

Hence proportion of the email messages have attachments as a percentage

= 13/50 * 100%

= 26%

This means that 26% of the emails received have attachments

6 0

3 years ago

Help meeee plz I don’t get it

MatroZZZ [7]

Answer: F

Step-by-step explanation:

This is basically like 2 rectangles. Find the area of both and add them together.

Remember that the area is $l$ x $w$ .

Area of Rectangle 1: $l$ = 7, $w$ = 14

14 x 7 = 98 $cm^{2}$

Area of Rectangle 2: $l$ = 5, $w$ = 14

14 x 5 = 70 $cm^{2}$

Add the areas together: 98 $cm^{2}$ + 70 $cm^{2}$ = 168 $cm^{2}$

6 0

3 years ago

50+51+52+...+101=...<br>Can you help me? I do not understand

Dmitriy789 [7]

Suppose

$S=50+51+52+\cdots+100+101$

At the same time, we can write

$S^*=101+100+99+\cdots+51+50$

Note that $S=S^*$ (just reverse the sum). Let's pair the first terms of $S$ and $S^*$ , and the second, and the third, and so on:

$S+S^*=(50+101)+(51+100)+(52+99)+\cdots+(100+51)+(101+50)$

Now, each grouped term in the sum on the right side adds to 151. There are 52 grouped terms on that same side (because there are 50 numbers in the range of integers 51-100, plus 50 and 101), which menas

$S+S^*=52\cdot151$