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3 years ago

9

Please help, I don't understand this. (please no fake answers)

1 answer:

Anni [7]3 years ago

5 0

19.4 units

Since we know 2l+2w equals the perimeter we can input what we know for l and w.

2*6.2 + 2*3.5

12.4 + 7

19.4 units

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Identify the 25th term of the arithmetic sequence 2, 1 and 3 over 5, <br> 1 and 1 over 5 …

maksim [4K]

We are given the arithmetic series 2, 1 3/5, 1 1/5.. In this case, the arithmetic difference is -2/5 by taking the difference of 2 and 1 3/5 and 1 3/5 and 1/5. The general formula of arithmetic sequence is an = a1 + d*(n-1). Substituting, an = 2 -2/5*(n-1). a25 hence is equal to a25 = 2-2/5*(25-1) = -38/5

8 0

3 years ago

Read 2 more answers

Mary and vivian have some money. if mary gave vivan $8 they would have same amount. However if vivan gives mary $8, then mary wo

kow [346]

Answer:

Money with Mary = $28

Money with Vivan = $12

Step-by-step explanation

Money with Mary = $ m

Money with Vivan = $v

If mary gave vivan $8 they would have same amount. $ 8 is reduced from Mary's amount 'm' and $8 is added to vivan amount 'v'

m - 8 = v + 8

m = v + 8 +8

m -v = 16 ----------------(I)

If vivan gives mary $8, then mary would have 9 times as much as vivan.

9(v - 8) = m + 8

9v - 72 = m + 8

9v - m = 8 + 72

-m + 9v = 80 --------------(II)

Add equation (I) and (II). Thus m will be cancelled and we will get the value of v

(I) m - v = 16

(II) <u>-m + 9v = 80</u> {Now add}

8v = 96

v = 96/8

v = $ 12

Plugin v = 12 in equation (I)

m - 12 = 16

m = 16 +12

m =$ 28

7 0

3 years ago

24=3y<br><img src="https://tex.z-dn.net/?f=24%20%3D%203y%20" id="TexFormula1" title="24 = 3y " alt="24 = 3y " align="absmiddle"

Norma-Jean [14]

$\bf 24=3y\implies \cfrac{24}{3}=y\implies 8=y$

3 0

3 years ago

Read 2 more answers

169= (24/2)^2 +(d/2)^2

OlgaM077 [116]

Answer: d = ±10

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

169 = $(\frac{24}{2})^{2}$ + $(\frac{d}{2})^{2}$

169 = (12)² + $\frac{d^{2}}{4}$

169 = 144 + $\frac{d^{2}}{4}$

25 = $\frac{d^{2}}{4}$

100 = d²

√100 = √d²

±10 = d

6 0

3 years ago

Mulder and Scully are driving to the same town. Mulder leaves the office at 9:30a.m. averaging 57mph. Scully leaves at 10:00a

koban [17]

Answer:

Scully will catch up with Mulder by 7:30 PM.

Step-by-step explanation:

Consider the provided information.

Mulder leaves the office at 9:30a.m. averaging 57mph.

Scully leaves at 10:00a.m., following the same path and averaging 60 mph.

Distance covered by Mulder between 9:30 AM and 10:00 AM:

$\frac{57}{2}= 28.5$ miles

Let t is the time taken by Scully to catch up with Mulder.

After leaving office Scully needs to cover extra distance of 28.5 miles because Mulder leaves the office earlier.

Therefore total distance cover by them is:

$28.5+57t=60t$

$28.5=60t-57t$

$28.5=3t\\t=9.5$

Hence, it would take 9 hours 30 minutes to catch up Mulder.

10 am + 9 hours 30 minutes = 7:30 pm

Therefore, Scully will catch up with Mulder by 7:30 PM.

6 0

4 years ago