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Mumz [18]
3 years ago
12

Use the following similar triangles (ABC ~ DEF). If AC= 18 when DF=19 and AB=15, what is DE? Solve mathematically. Round your an

swer to the nearest tenth.
Mathematics
2 answers:
Usimov [2.4K]3 years ago
8 0

Answer:

15.8

Step-by-step explanation:DE=15*19/6

DE=15.83=15.8

aev [14]3 years ago
3 0

Answer:

Step-by-step explanation:

As they are similar triangles,we can write

\frac{AB}{DE}=\frac{AC}{DF}

⇒\frac{15}{DE}=\frac{18}{19}

⇒DE=15.8

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How to do n to the power of 6 ÷n to the power of 4
Zielflug [23.3K]

Answer:

n to the power of 2

Step-by-step explanation:

baiscally just subtract 6-4 to get 2

5 0
3 years ago
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Again(sorry) did anyone know 96 and 97
vladimir2022 [97]
96: 

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flour:2,4,6,8,10,12

97:

yellow:3,6,9,12,15,18
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7 0
3 years ago
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2 3/4 - 3/7<br><br> 10 points
alexira [117]

Answer:

It only gives five points.

Step-by-step explanation:

I just wanted to let you know.

4 0
3 years ago
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Explain your answer, please
Molodets [167]

.1.Scale Factor of Triangle STU to Triangle PQR= 1.5

2.Scale Factor of Trapezoid EFGH to Trapezoid JKLM =2

3. about 90 armadillo

1.Side ST: 15 ÷ Side PQ: 10 = 1.5

2.Side JM: 14 ÷Side EH: 7 = 2

3.843/7=120.428571429

843/4=210.75

210.75-120.428571429=90.321428571

This rounds to 90 armadillo

Hope this helps :3 ❤

8 0
3 years ago
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What is the sum of a geometric sequence 1, 3, 9, ... if there are 12 terms?
attashe74 [19]
We know that
a1=1
a2=3
a3=9
a2/a1=3/1----> 3
a3/a2=9/3----> 3
<span>common ration r is equal to 3
number of terms n  is 12

The </span><span>Sum of geometric series is given by the formula
</span>Sum=a1*[1-r<span>^n]/[1-r]
</span>Sum=1*[1-3^12]/[1-3]-----> Sum=[1-3^12]/[1-3]----> [3^12-1]/[3-1]
<span>Sum=531440/2-----> 265720

the answer is
265720



</span>
4 0
3 years ago
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