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Karo-lina-s [1.5K]

2 years ago

5

Miss Sandy is fencing in her rectangular backyard, which is 3x23x2 feet wide and 4xy+5x3y24xy+5x3y2 feet long. a.) Find the peri

meter of Miss Sandy's yard. Show all work. b.) How much fencing should Miss Sandy purchase? Use mathematics to justify your answer.

1 answer:

liraira [26]2 years ago

6 0

<span>3x23x2= 138 feet wide by 28xy + 10x6y + 2 feet long B) purchase 140 feet X (28xy + 10x6y) fencing</span>

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saul85 [17]

Here you go!! Hope it helps !!

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2 years ago

Sound travels about 340 m / s. The function d(t) = 340t gives the distance d(t), in meters that sound travels in t seconds. How

Juliette [100K]

Answer:

d(63)=21,420m

Step-by-step explanation:

d(t)=340t

D=Distance

T=Time

D(63)=21,420

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1 year ago

7/10 write the fraction of the sum of fractions three different ways

mote1985 [20]

14/20 21/30 28/40 are the equivalent fractions

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2 years ago

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HELP<br>8 Prove that 8^6+4^11 is divisible by 17. Answer __*17

Marina CMI [18]

Answer:

<u>262,144</u> goes in the blank

Step-by-step explanation:

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4^11 = 4,194,304

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8 0

1 year ago

Find the side in of point a to point c

vladimir1956 [14]

Step 1:

Calculate the measure of angle ∠ABC

$\angle DBC+\angle ABC=180(\text{ sum of angles on a straight line)}$ $\angle ABC=65^0$ $\begin{gathered} \angle DBC+\angle ABC=180 \\ \angle DBC+65^0=180^0 \\ \angle DBC=180^0-65^0 \\ \angle DBC=115^0 \end{gathered}$

From the triangle in the question,

$a=10\operatorname{km},c=15\operatorname{km},B=115^0$

Step 2:

Calculate the value of AB using the cosine rule below

$b^2=a^2+c^2-2\times a\times c\times\cos B$

By substituting the values, we will have

$\begin{gathered} b^2=a^2+c^2-2\times a\times c\times\cos B \\ b^2=10^2+15^2-2\times10\times15\times\cos 115^0 \\ b^2=100+225-300\times(-0.4226) \\ b^2=325+126.78 \\ b^2=451.78 \\ \text{Square root both sides} \\ \sqrt[]{b^2}=\sqrt[]{451.78} \\ b=21.26\operatorname{km} \end{gathered}$

Hence,

The distance of point A to point C is = 21.26km

3 0

1 month ago