Solve the following Problems
1. Evaluate -42X 1001 by using distributive property.
2. 1 kg of rice costs Rs 44 2/3Find the cost of
kg of rice.
3. Represent 2/3 and -2/3 on the number line.
4. Solve the equation of 3(p+2) +4 =10.
5. Find the complement of i) 65 ii) 30
6. Find the circumference of circle whose radius is 7cm.
Answers
Answer:
Answer of 5th question i) 25 ii) 60
Step-by-step explanation:
complement angles has a sum of 90 degree let x be 65 complement
in first case complement of 65 is
65+x =90
x=90-65
x=25
so the complement of of 65 is 25
ii) complement of 30
30+x =90
x=90-30
x=60
the complement of 30 is 60
Given : -42 × 1001
To Find : Evaluate -42X 1001 by using distributive property.
Solution:
-42 × 1001
= -42 × (1000 + 1)
= -42 × 1000 - 42 x 1
= -42000 - 42= -42042
1 kg of rice costs Rs 44 2/3 = 134/3 Rs
Question incomplete
2/3 and -2/3 on the number line.
Numbers with a negative sign are less than zero
Right of zero represented by ‘+’ sign and to the left of zero represented by ‘–’ sign.
+ sign numbers can be denoted as simply numbers
On a number line the number increases as we move to the right and decreases as we move to the left.
1 : Draw a line and mark some points at equal distance on
Mark a point as zero on it. Points to the right of zero are positive integers and are marked simply 1, 2, 3 and so on , while points to the left of zero are negative integers and are marked – 1, – 2, – 3 and so on
Divide between 0 and 1 in 3 Equal parts
and go 2 right of 0 and mark 2/3
Divide between 0 and -1 in 2 Equal parts
and go 2 left of 0 and mark -2/3
3(p+2) +4 =10
=> 3p + 6 + 4 = 10
=> 3p + 10 = 10
=> 3p = 0
=> p = 0
Complementary angles adds upto 90°
complement of 65° = 25°
complement of 30° = 60°
circumference of circle whose radius is 7cm.
2πr= 2 * 22/7 * 7= 44 cm
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