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
Anestetic [448]
3 years ago
12

Please Help, I need to get a good grade!

Mathematics
1 answer:
tiny-mole [99]3 years ago
7 0
First I subtracted all the terms in the second equation from the terms in the first one, eliminating all the x terms. that made finding y easy. Then I substituted the value for y into one of the equations to find x :)

You might be interested in
PLEASE DON'T USE LINKS
nikdorinn [45]
The value of x is 4 which balances the given equation
6 0
3 years ago
Mrs. Yin bought 0.81 of a pound of turkey and 0.69 of a pound of chicken. Did Mrs. Yin buy more turkey or more chicken? Show how
S_A_V [24]
Mrs. Yin bought more turkey than chicken. I know because 0.80 is greater than 0.69
5 0
3 years ago
A space is totally disconnected if its connected spaces are one-point-sets.Show that a finite Hausdorff space is totally disconn
marysya [2.9K]

Step-by-step explanation:

If X is a finite Hausdorff space then every two points of X can be separated by open neighborhoods. Say the points of X are x_1, x_2, ..., x_n. So there are disjoint open neighborhoods U_{12} and U_2, of x_1 and x_2 respectively (that's the definition of Hausdorff space). There are also open disjoint neighborhoods U_{13} and U_3 of x_1 and x_3 respectively, and disjoint open neighborhoods U_{14} and U_4 of x_1 and x_4, and so on, all the way to disjoint open neighborhoods U_{1n}, and U_n of x_1 and x_n respectively. So U=U_2 \cup U_3 \cup ... \cup U_n has every element of X in it, except for x_1. Since U is union of open sets, it is open, and so U^c, which is the singleton \{ x_1\}, is closed. Therefore every singleton is closed.

Now, remember finite union of closed sets is closed, so \{ x_2\} \cup \{ x_3\} \cup ... \cup \{ x_n\} is closed, and so its complemented, which is \{ x_1\} is open. Therefore every singleton is also open.

That means any two points of X belong to different connected components (since we can express X as the union of the open sets \{ x_1\} \cup \{ x_2,...,x_n\}, so that x_1 is in a different connected component than x_2,...,x_n, and same could be done with any x_i), and so each point is in its own connected component. And so the space is totally disconnected.

4 0
4 years ago
31,50 is 42% os what number
sergeinik [125]
\frac{31,50}{x}=\frac{42}{100}

The right fraction represents the percentage; 42 over 100 (100 is the total), or 0.42.
The left fraction is the part number over the whole number. The whole number is unknown, so we use 'x'.


\frac{31.50}{x} = \frac{42}{100}\\\\cross\ multiply\\\\31.50\times100=3150\\42\times x=42x\\\\3150=42x\\x=75
Your answer is 75.

3 0
4 years ago
How much : 100-99+98-97+....+4-3+2-1 = ?
Alexandra [31]
Without accurate calculations i would say 50
8 0
3 years ago
Read 2 more answers
Other questions:
  • What would be the value of x
    10·1 answer
  • What is 7/8 in decimal form
    14·1 answer
  • If the speed limit on a interstate is 45 and someone is going 85 how much more are they going than the speed limit?
    6·2 answers
  • Which of the following pairs of functions are inverses of each other?
    13·2 answers
  • Alexis uses toy blocks to build a building.each toy block is 1 cubic inch. The first three floors of the model are made up of 6
    10·1 answer
  • Need help please! Exponential function! Multiple choice!
    8·1 answer
  • Given the function f(x) = 3|x – 2| + 6, for what values of x is f(x) = 18?
    14·2 answers
  • Show answer in lowest terms 1/3 x 3/4=
    6·2 answers
  • Pls help with a good explanation and show ur work will give brainleiest
    8·1 answer
  • 6.14 x 10^-9 greater or less than 6 x 10^-10
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!