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ololo11 [35]
3 years ago
7

Look at image for question​ please

Mathematics
1 answer:
pickupchik [31]3 years ago
3 0

Answer:

below

Step-by-step explanation:

mean=EFX÷N

=40÷8

=5

THIS IS THE MEAN OF GIVEN DATA.

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The sum of the areas of two circles is 80 pi
katovenus [111]
The area of a circle is A = πr^2. We let A1 And A2 the areas of the circles and r1 and r2 the radius of each, respectivley.

A1 + A2 = 80π
Substitute the formula for the area,
π(r1)^2 + π (r2)^2 = 80π

From the statement, we know that r2=2(r1).

<span>π(r1)^2 + π (2 x r1)^2 = 80π
</span>We can cancel π, we will have

5 x (r1)^2 = 80
Thus,

r1 = 4 and r2 = 8
5 0
3 years ago
Ratios:Question 4
Valentin [98]

Answer:

75 boys

Step-by-step explanation:

Formula-Girls:Boys=Girls:Boys

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450÷6=75

4 0
2 years ago
A car travels at an average rate of speed of 60 miles per hour for 7 1/2 hours. How many miles doesn’t this car travel?
Galina-37 [17]
Distance = rate x time

distance = 60 miles per hour x 7 1/2 hours

distance = 450 miles
6 0
2 years ago
Read 2 more answers
Math question pre algebra
GalinKa [24]

Answer:

Option B

Step-by-step explanation:

By applying Pythagoras theorem in the given right triangle,

(Hypotenuse)² = (leg 1)² + (leg 2)²

By substituting the values in the given expression,

7² = x² + 2²

49 = x² + 4

x² = 49 - 4

x² = 45

x = √45

x = 3√5

x = 6.7 ft

Option B will be the correct option.

3 0
3 years ago
PLS HELP ME ASAP I DONT HAVE TIME. IT ALSO DETECTS IF ITs RIGHT OR WRONG.
Pani-rosa [81]

do not know sorry : (

4 0
2 years ago
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