faithiemusic8821
16.06.2020 •
Mathematics
Which is the best approximation for the solution of the system of equations? y=-2/5x+1 y=3x-2
Solved
Show answers
More tips
- H Health and Medicine What Are the Best Vitamins? A Scientific View on Vitamin Supplements...
- F Food and Cooking From Latte to Espresso: Which Coffee Drink is the Most Popular on Earth?...
- C Computers and Internet How to Set Up Internet on iPhone? Detailed Guide with Step-by-Step Instructions...
- P Philosophy 8 привычек, чтобы достичь счастливой жизни...
- F Food and Cooking How Many Grams Are In a Tablespoon?...
- G Goods and services How to Choose the Right Iron: Purchase Tips...
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
- H Health and Medicine How to Choose the Right Glasses?...
- H Health and Medicine What vaccines do children need?...
- H Health and Medicine AKDS Vaccination: Ensure Your Child s Safety...
Answers on questions: Mathematics
- M Mathematics Which pair shows equivalent expressions? o 213x+2) = 2qx+1 o 213x+2)=x+4 x+4)= x+2 o 21x+4) – 2£x+8 o 2zx+...
- M Mathematics Over which interval does f(t) have positive average rate of change? A) -8,-2 B) -5,-1 C) -9,-8 D) 2,4...
- M Mathematics Do u only keep change flip when adding?...
- B Business What are the tenets of modern management theory?...
- P Physics A weight of 15 N is located at a distance of 2.5 meters from the fulcrum of a simple lever. At what distance from the fulcrum should a weight of 20.0 N be placed on the opposite...
- H History How do the Great Plains of Texas differ from the Coastal Plains?...
- M Mathematics A parallelogram with four equal sides, opposite equal angles, and no right angles is.....
- E English Margin Work: Page 9 (Beowulf) Recall that a kenning is a metaphorical phrase that can take the place of a name. Reread lines 74-78 and identify the kenning for Grendel s name. (Type...
Ответ:
x = 15/17 , y = 11/17
Step-by-step explanation:
Solve the following system:
{y = 1 - (2 x)/5 | (equation 1)
{y = 3 x - 2 | (equation 2)
Express the system in standard form:
{(2 x)/5 + y = 1 | (equation 1)
{-(3 x) + y = -2 | (equation 2)
Swap equation 1 with equation 2:
{-(3 x) + y = -2 | (equation 1)
{(2 x)/5 + y = 1 | (equation 2)
Add 2/15 × (equation 1) to equation 2:
{-(3 x) + y = -2 | (equation 1)
{0 x+(17 y)/15 = 11/15 | (equation 2)
Multiply equation 2 by 15:
{-(3 x) + y = -2 | (equation 1)
{0 x+17 y = 11 | (equation 2)
Divide equation 2 by 17:
{-(3 x) + y = -2 | (equation 1)
{0 x+y = 11/17 | (equation 2)
Subtract equation 2 from equation 1:
{-(3 x)+0 y = -45/17 | (equation 1)
{0 x+y = 11/17 | (equation 2)
Divide equation 1 by -3:
{x+0 y = 15/17 | (equation 1)
v0 x+y = 11/17 | (equation 2)
Collect results:
{x = 15/17 , y = 11/17
Ответ:
4
Step-by-step explanation:
Count with your fingers, 1,2,3 and 4