1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
likoan [24]
3 years ago
15

Is 100 a good estimate for the difference of 712 and 589? If it is, explain why it is a good estimate. If it is not, explain why

it is a bad estimate.
Mathematics
1 answer:
Masja [62]3 years ago
4 0
It is a bad estimate because the gap between 712 and 589 is clearly (if you were just estimating in hundreds) would be 200

200 would be a better guess
You might be interested in
Pure copper was mixed with a 10% copper alloy to produce an alloy thát was 25% copper. How much of the pure copper and how much
lora16 [44]

Answer:

6kg pure copper and 30 kg 10% copper was mixed to give 36kg of 25% alloy

Step-by-step explanation:

Here, we want to produce 36 kg of 25% alloy

Let the Pure copper be x kg while 10% alloy be y kg

Pure copper is simply 100% copper

Thus;

x + y = 36 •••••(i)

Then;

100% of x + 10% of y = 25% of 36

= x + 0.1y = 9 •••••• ii)

From i x = 36-y

from ii, x = 9-0.1y

Equate both x

36-y = 9-0.1y

36-9 = 0.1y + y

0.9y = 27

y = 27/0.9

y = 30

x = 36-y

x = 36-30

x = 6 kg

8 0
2 years ago
What is the area of the figure below
Viefleur [7K]

Answer:

390cm

Step-by-step explanation:

1. find area of rectangle

 1. 15cm x 20cm= 300 cm

2. find area of triangle

  1. 1/2 (12 x 15)= 90cm

300+90

4 0
2 years ago
These are hard for me
Vlada [557]
3. C
4. 2
5. C
hope this helps:)
3 0
2 years ago
Read 2 more answers
A toy company produces two kites whose shapes are geometrically similar. Find the length of the missing side of the smaller kite
docker41 [41]
M=30/22,5=1,33
m=25/x=1,33. ...>x=25/1,33=18,7
5 0
2 years ago
Show all work. <br><br>PLEASE HELP!!!!
34kurt
(a) Using the table, give the values fo rthe inverse


1) original table of values:


x      1     2     3    4    5

f(x)   0     1     1    5    3


2) The inverse of the function is obtained by exchanging x and f(x), this is:


                   ( x, f(x) ) → ( f(x), x)


3) So, the table of values of the inverse of the given function is:


x          0    1     1      5     3

f⁻¹ (x)   0     1     2     3     4


(b) Is the inverse a function?


No, the inverse is not a function, since the table of the inverse shows that the x -value 1 has two different images.


This ambigüity is opposite to the definition of a function, which requires that any input value has only one output. For that reason, the inverse is not a function. You cannot tell whether the image of 1 is 1 or 2, because both are images of the same value.
7 0
3 years ago
Other questions:
  • 11
    12·1 answer
  • Gabriel saves 40% of his monthly paycheck for college.He earned $270 last month.How much money did Gabriel save for college?
    14·1 answer
  • Arcsin(sin(3pi)) ...?
    6·1 answer
  • How do I solve for x in a quadratic equation
    14·2 answers
  • Simplify 7m+8n+9mn+12m​
    6·2 answers
  • Help please? 10 points. Correctly
    10·1 answer
  • The question is in the picture please help if can I will be really grateful
    12·1 answer
  • Fill in the missing number to complete the linear equation that gives the rule for this table.
    5·1 answer
  • A self-serve frozen yogurt shop has 8 candy toppings and 4 fruit toppings to choose from. How many ways are there to top a froze
    9·1 answer
  • Find the prime factorization of 420​
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!