3 years ago

Use properties of exponents to write an equivalent expression for 5 exponent 4 * 5 exponent -7

Mathematics

1 answer:

Pavlova-9 [17]3 years ago

3 0

Add the exponents together

5^(-2) should be your answer

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2) How many sides does a regular polygon have if the interior angles each measure 156 degrees ?

spayn [35]

Answer:

B; 15 sides

Step-by-step explanation:

8 0

2 years ago

Your friend rolls a number cube 500 times, how many times do you think an odd number will be rolled?

Mila [183]

250, and this is because of probability. Since half of the numbers are odd numbers, and half are even. It would be hard to determine, your probability would be 1/2. 1/2 of 500 is going to be 250.

3 0

3 years ago

The side lengths, in centimeters, of a triangle are 5x, 32, and 2(3x + 2). perimeter of the triangle is 80 centimeters. what is

Lerok [7]

Answer:

20 cm

Step-by-step explanation:

5x + 32 + 6x + 4 = 80

11x + 36 = 80

11x = 44

x = 4

sides of triangle:

5(4) = 20 cm

32 cm

6(4) + 2 = 26 cm

4 0

3 years ago

What is the value of x in the solution

krok68 [10]

Answer:

$x =\dfrac 47$

Step-by-step explanation:

$~~~~~9x-1 = 2x+3\\\\\implies 9x -2x = 3+1\\\\\implies 7x = 4\\\\\implies x =\dfrac 47$

6 0

2 years ago

Two circles have the same radius. Is the combined area of the two circles the same as the area of a circle with twice the radius

Dimas [21]

Ok so area=pir^2

2 circles with same area=2pir^2

circle with 2 times radius=pi(2r)^2=pi4r^2=4pir^2

is 2 circles with same area equal to circle with 2 times radius?
is 2pir^2=4pir^2?
is 2=4?
no

therfor the answer is no

it is because the radius is squaered so the doubled gets doubled makng it quadrupuled when the first one only gets doubled

8 0

3 years ago