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Naily [24]
4 years ago
9

Write a description of how a diagram can help you solve 2×40

Mathematics
2 answers:
notsponge [240]4 years ago
6 0
A multiplication chart is a type of diagram witch can help you solve that. BTW 2*40=80.
nasty-shy [4]4 years ago
4 0

Let me explain like this .Suppose There are 40 people gathered somewhere for attending an event.Each Person has to be given 2 sweets for their arrival or for showing their presence in the event. Now 40 other woman joined them..Instead of getting two sweets each of them got one sweet.

Solution:   2 sweets × 40 people = 1 sweet × 80 people = 80  

2nd Way:

There are 40 rooms in a building.In  Each room we have to fix two bulbs. So How many bulbs are there in the building.

Solution →→→2 bulbs × 40 room = 80 bulbs

Diagram is depicted below for two parts.

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Find the perimeter of the given triangle
faltersainse [42]

ABC is similar to PQR

that means AC/PR is a constant = 12/ 6 = 2

AC= 2 PR

AB= 2PQ

BC= 2QR

Perimeter of ABC= AB+BC+ CA=

2PQ + 2 QR + 2PR= 2( PQ+ QR+ PR)

= 2( perimeter of triangle PQR )

Perimeter of ABC= 2( perimeter of PQR) = 2* 36 = 72

Answer : 72.

8 0
4 years ago
How to find x and Angle ROS
Jlenok [28]
21+45+70=136
136+(2+x)=180
First subtract 136 from both sides
(2+x)=44=M<ROS
Subtract 2 from both sides
x=42
4 0
4 years ago
Read 2 more answers
What's 10 times 80 divided by 9.8? I lost my calculator.
pogonyaev
Well 10 times 80 is 800 and dividing it by 9.8 gives us 81.63
3 0
3 years ago
Read 2 more answers
A scientist has a sample of the radioactive isotope bismuth-212. The isotope decays exponentially as shown in the table. Time (s
luda_lava [24]

Answer:

f(x) = 30 • 0.989x

Step-by-step explanation:

Given the data :

10 26.8

20 23.9

30 21.3

40 19

50 16.9

60 15.1

Using technology, the exponential model equation obtained by plotting the data is :

y = 30.068(0.989)^x

Based on the general exponential formula :

y = ab^x

y = predicted value

Initial value, a = 30.068

Rate = b = 0.989

The most appropriate model equation from the options given is :

f(x) = 30 • 0.989^x

7 0
3 years ago
The difference of two numbers is 30. their quotient is 6. what are the two numbers
BlackZzzverrR [31]
Well, the quotient must be bigger/smaller

lets say the numbers are x and y
x>y

so
x-y=30 and x/y=6
multiply both sides by y in 2nd equation
x=6y
subsitute 6y for x in other equation

6y-y=30
5y=30
divide by 5
y=6

sub back
x=6y
x=6(6)
x=36


the numbers are 36 and 6

but they could also be -36 and -6 because -36/-6=6 and -6-(-36)=30


the 2 numbers are 36 and 6 or -36 and -6
8 0
4 years ago
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