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3 years ago

The length of the base of an isosceles triangle is x. The length of a leg is 3x-3. The perimeter of the triangle is 92. Find x.

Mathematics

1 answer:

eimsori [14]3 years ago

6 0

Answer:perimeter of isoceles rectangle

=2 ×length × base

Step-by-step explanation:

2(3x-3)+x=92 , 6x-6+x=92 ,7x-6=92 ,x =14 then the base x=14 cm

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What is margin of error??

Tems11 [23]

Answer:

The margin of error for a sample size of 250 is 6

Step-by-step explanation:

The margin of error is given as

1/square root of the sample size

Thus, margin of error for a sapless size of 250 is

1/√250

= 1/15. 811

= 6

8 0

3 years ago

16. Solve -3x2 - 9x + 12 = 0.

AURORKA [14]

Given :

-3x² - 9x + 12 = 0

To find :-

Value of x .

Solution :-

Given equation ,

-( 3x² + 9x -12 ) = 0
3x² + 9x - 12 = 0
3x² + 12x - 3x - 12 = 0
3x ( x +4) -3( x +4) = 0
(3x -3)(x +4) = 0
x = 3/3 , -4
x = 1 , -4

7 0

3 years ago

6. A regular pyramid has a square base. The perimeter of the base is 64 inches and the height of the pyramid is 12 inches. What

hichkok12 [17]

The volume is 1024. the base lengths are all 16 inches

4 0

3 years ago

James wants to build a wooden planter box for his garden with a volume of 100 cubic feet. If he constructed the planter with a h

EastWind [94]

Answer:

The length of the box is 10 feet.

Step-by-step explanation:

You have to work backwards to find volume, so just divide the volume (100) by the height (2) then divide that by the width (5) and you get your answer, 10

7 0

3 years ago

A sample of 36 observations is selected from a normal population. The sample mean is 12, and the population standard deviation i

velikii [3]

Answer: One tail test.

Step-by-step explanation:

Given : A sample of 36 observations is selected from a normal population. The sample mean is 12, and the population standard deviation is 3.

Also, The set of hypothesis to conduct a test :-

$H_0:\mu\leq10\\\\H_1:\mu>10$

The kind of test need to perform is dependent upon the alternative hypothesis.

Since, the alternative hypothesis is one tailed (right-tailed), so the test is one tail test.

5 0

4 years ago