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2 years ago

I need help with these questions. Plzzz help

Mathematics

1 answer:

KonstantinChe [14]2 years ago

4 0

(a).ABO is equivalent to x because they are base angles of an isosceles triangle (because the radii are equal). The same applies for CBO being equivalent to y
(b). Since angle COA is 180°, ABC is equivalent to half of COA which is 90°

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Here is the photo someone please help

Alja [10]

Answer:

Rational

Integer

Whole

Real

Step-by-step explanation:

Rational: 

The square root of 4 is 2, which is an integer (number without decimals). A number is only irrational if it has endless decimals after it.

Integer:

A number without decimals

Whole:

A number without fractions; an integer.

Real: 

Real numbers include whole numbers, rational numbers and irrational numbers- pretty much any number you can think of. The only numbers that ARENT considered real are imaginary numbers like √-1 and infinity.

7 0

2 years ago

The length of a rectangle is 6 yards more than 8 times the width. The perimeter is 102 yards. Find the length and width.

dalvyx [7]

L•w=102
l=8w+6
8w+6•w=102
9w+6=102
102-6=96
9w=96
96/9= 10.67
Width is 10.67 yards

4 0

2 years ago

Abby is surveying people in the city about their interest in a new shopping mall. She found that 180 people, or 37.5% of those s

Harlamova29_29 [7]

Step-by-step explanation:

37.5% = 180people

100% = 180/37.5 x 100 = 480

answer: 480 people

Topic: percentage

If you like to venture further, do check out my insta (learntionary) where I regularly post useful math tips! Thank you!

6 0

2 years ago

Solve for xxx. −9x+2>18 OR 13x+15≤−4

yanalaym [24]

-9x + 2 > 18.

-9x > 16

x < -16/9

13x ≤ -19

x ≤ -19/13

x < -16/9 or. x ≤ -19/13

3 0

2 years ago

Read 2 more answers

What is the exact value of cos 45° ?

Georgia [21]

Let the two sides of a right triangle be equal to one, which means that the hypotenuse is √2

Since cosa=adjacent side / hypotenuse

cos45=1/√2

We can rationalize the denominator by multiplying numerator and denominator by √2

√(2)/2

or if you prefer: √(1/2)

3 0

2 years ago

Read 2 more answers