All categories

3 years ago

Use Vieta's Theorem to solve the problems.

Mathematics

1 answer:

VladimirAG [237]3 years ago

4 0

Answer:

The answer is -2, -17

Step-by-step explanation:

You write a system of equations

$x_{1} +x_{2}=-19\\x_{1}-x_{2}=15$

Then you solve:

-2, -17

You might be interested in

Y=-1/2x+10x what is the height of the arch at the turning point

lozanna [386]

your equation is linear, so there isn't any arch

6 0

3 years ago

Systems with three variables. please help

kirza4 [7]

X= 6
Y= 0
Z= -2

CHECK
3x + y -2z =22
3(6) + 0 -2(-2) =22
18 + 0 +4= 22
22=22

x+5y+z =4
6 +5(0)+ -2 =4
6 + 0 +-2 = 4
4=4

x+3z=0
6 + 3(-2) =0
6 -6 = 0
0=0

3 0

3 years ago

Mrs Richmond bought some apples and pears in the ratio 2:5. An apple costs 30 cents. A pear costs 15 cents mire than an apple. H

Lera25 [3.4K]

Answer:

$2.85

Step-by-step explanation:

30×2=60

30+15=45

60+(45×5)=?

45×5=225

60+225=285

$2.85

Cuz every 100cents is one dollar

5 0

3 years ago

How much water should you have in a severe weather emergency supply kit?

Y_Kistochka [10]

Answer: u should have at least i gallon per person per day

8 0

3 years ago

How do change 0.9 in fraction

Fantom [35]

0.9 as a fraction is: $\frac{9}{10}$

What place is the '9' in? It's in the tenth place.
0.9 can be said as $nine \ tenths$

Nine $(9)$ tenths $(10)$ = $\frac{9}{10}$

3 0

3 years ago

Read 2 more answers