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2 years ago

Does someone know this ??

Mathematics

2 answers:

Misha Larkins [42]2 years ago

7 0

The scale factor is 1/5

Liula [17]2 years ago

5 0

the scale factor would be 1/5 because the side length of 4 for the second triangle is 1/5 of the side length of the first triangle which is 20

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PLEASE HELP ONLY IF RIGHT 69 points, brainliest, 5 stars, and thank you.

Alex_Xolod [135]

Answer: 804.25cm

Step-by-step explanation:

V=πr2h/3

pi= 3.14

r=8cm

h= 12cm

Slot the values

3.14× (8x8) × 12/3

3.14 × 64 x 4

V= 804.25cm

4 0

2 years ago

For each of the finite geometric series given below, indicate the number of terms in the sum and find the sum. For the value of

kotykmax [81]

Answer:

Number of term N = 9

Value of Sum = 0.186

Step-by-step explanation:

From the given information:

Number of term N = $3 (0.5)^{5} + 3 (0.5)^{6} + 3 (0.5)^{7} + \cdots + 3 (0.5)^{13}$

Number of term N = $3 (0.5)^{5} + 3 (0.5)^{6} + 3 (0.5)^{7} +3 (0.5)^{8}+3 (0.5)^{9} +3 (0.5)^{10} +3 (0.5)^{11}+3 (0.5)^{12}+ 3 (0.5)^{13}$

Number of term N = 9

The Value of the sum can be determined by using the expression for geometric series:

$\sum \limits ^n_{k=m}ar^k =\dfrac{a(r^m-r^{n+1})}{1-r}$

here;

m = 5

n = 9

r = 0.5

Then:

$\sum \limits ^n_{k=m}ar^k =\dfrac{3(0.5^5-0.5^{9+1})}{1-0.5}$

$\sum \limits ^n_{k=m}ar^k =\dfrac{3(0.03125-0.5^{10})}{0.5}$

$\sum \limits ^n_{k=m}ar^k =\dfrac{(0.09375-9.765625*10^{-4})}{0.5}$

$\sum \limits ^n_{k=m}ar^k =0.186$

6 0

2 years ago

What’s the answer to 3/4 +5/8

garri49 [273]

Answer:

11/8

Step-by-step explanation:

3/4=6/8 and 6+5=11

8 0

2 years ago

Solve for the variable

liraira [26]

Answer:

y = 25

Step-by-step explanation:

$30=\frac{6}{5} y\\\\\frac{6}{5} y=30\\\\(\frac{6}{5} y)5=30*5\\\\6y=150\\\\\frac{6y=150}{6}\\\\\boxed{y=25}$

Hope this helps!

8 0

3 years ago

Elysias bill at a resturant is $25.00. How much money would she leave as a tip if she wants to leave a tip of 15%. Write a propo

nydimaria [60]

3.75

25 divided by 15 is 3.75

Please mark brainliest

8 0

2 years ago