2 years ago

What is TR(39)? pls help this is going to be on my exam...

Mathematics

1 answer:

musickatia [10]2 years ago

3 0

Answer:

780

Step-by-step explanation:

So when you're adding consecutive numbers like this. 1+2+3...+39. You add 39 and 1. This is 40. 2+38 is 40. This is a pattern. Now, we do 40 multiplied by 39 and this will give you the number 1620. After this you would have to divide this product by 2. The answer will soon be 780.

You might be interested in

Help me please its math

Reptile [31]

D=10
Explanations: 2d-5=3d- 15
2d- 3d =-15+5
D=10

6 0

2 years ago

If the radius of a circle equals 20 cm find its circumference correct to one decimal place

Brums [2.3K]

Answer:

125.66

Step-by-step explanation:

i don't get the one decimal place part but there your answer

3 0

3 years ago

Read 2 more answers

12 people can be of 30 chairs in eight hours how many chairs candy people build in 100 hours

ruslelena [56]

Hello!

Divide the amount of chairs (30) that 12 people can build by the number of hours (8) it takes to build them, to find out how many chairs they make per hour.

30 ÷ 8 = 3.75

This means that they make they make 3.75 chairs per hour. Multiply this by 100 hours.

3.75 × 100 = 375

ANSWER:

The people can build D. 375 chairs in 100 hours.

7 0

3 years ago

What is the sum of 9/10+8/100

ArbitrLikvidat [17]

9/10 + 8/100

9/10 + 2×4/25×4

Common denominator is 50.

9/10 + 2/25.

5×9/5×10 + 2×2/2×25

45/50 + 4/50

= 49/50

6 0

3 years ago

Read 2 more answers

A divided by 9= -4 plss solve

iragen [17]

Answer: