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zhannawk [14.2K]
3 years ago
15

HELP ME! THIS IS SUPER HARD! YOU GET 100 POINTS OR MORE!

Mathematics
1 answer:
Eddi Din [679]3 years ago
6 0

Answer:

3,000

4

60

9

14276

Step-by-step explanation:

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You’re given three angle measurements of 30°, 70°, and 80°. How many triangles can you construct using these measurements?
Katyanochek1 [597]
Only one  cause it takes 180 degrees<span> to make a triangle so all you do is add it up</span>
6 0
3 years ago
Find the sum of the geometric series given a1=2, r=−3, and n=8.
inn [45]

Answer:

<u>Sum</u><u> </u><u>of</u><u> </u><u>the</u><u> </u><u>G</u><u>.</u><u>P</u><u> </u><u>is</u><u> </u><u>-</u><u>3</u><u>2</u><u>8</u><u>0</u>

Step-by-step explanation:

Summation:

{ \bf{sum =  \frac{a( {r}^{n }-1 )}{r - 1} }} \\  \\ { \tt{sum =  \frac{2( { { - 3}^{8 } -1)} }{ - 3 - 1} }} \\ { \tt{ =  \frac{13120}{-4} }} \\  = -3280

3 0
3 years ago
Read 2 more answers
The store sells walnuts for $2.95 per pound. Corey bought 2.4 pounds of walnuts. Before tax, how much will the walnuts cost?
stepladder [879]

Answer:

$7.18

Step-by-step explanation:

Multiply the number of pounds bought by the cost of one pound.

 (2.4 pounds)($2.99 per pound) = $7.176 ≅ $7.18

7 0
2 years ago
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The diameter of a circle if five times the length of a recatngle. The length of a rectangle is three times the width of the rect
Leno4ka [110]

Answer:

706.5 ft²

Step-by-step explanation:

A. Width of the rectangle

The formula for the area of a rectangle is

A = lw

But, l = 3w, so,

A = (3w)w

= 3w² = 12

      w² = 4         Divided each side by 3

      w   = 2 ft     Took the square root of each side

B. Length of rectangle

l = 3w = 6 ft

C. Diameter of circle

d = 5l = 5 × 6 = 30 ft

D. Radius of circle

d = 2r

r = d/2     Divided each side by 2

r = 30/2 = 15 ft

E. Area of circle

A = πr² = 3.14 × 15² = 3.14 × 225 = 706.5 ft²

The area of the circle is 706.5 ft².

8 0
3 years ago
What is the mean of the data set rounded to the nearest tenth?
mash [69]
The answer would be 1.5 when rounded.
8 0
3 years ago
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