jessicabogardus1 jessicabogardus1

07-11-2020
Mathematics

contestada

If 7x + 5y = 25 and 3x + 2y = 10, what is the value of x +y?

Respuesta :

ciyiwod326 ciyiwod326

07-11-2020

Answer:

Step-by-step explanation:

7x+5y=25

3x+2y=10

21x+15y=75

21x+6y=30

0x+11y=45

11y=45

y=45/11

y = 4.09

sub in 4.09 into equation 1

7x+5(4.09)=25

7x+20.45=25

7x=25-20.45

x=4.55/7

Answer Link

Otras preguntas

I need help.... Could someone please help me

An angle is reflected across the y−axis. how is the measure of the reflected angle related to the measure of the original angle?the measure of the reflected ang

The expression (3 - 7i)2 is equivalent to

carrie has a string 9 inches long.she will cut each piece of string into 1/4

Where are the sugars created during photosynthesis?

When it comes to summertime refreshments, many debate the question: Which is better-sparkling water or lemonade? Sparkling-water overs believe there is nothing

of translation happens when the ribosome hits a stop codon on the mRNA. 2. of translation always happens at the start codon of the mRNA. 3. The process, perfor

Which number follows the three rules below? If rounded to the nearest whole number it is 200 If rounded to the nearest tenth it is 199.8 If rounded to the neare

Conversion disorders are more common in rural populations or in areas of lower socioeconomic status. please select the best answer from the choices provided t f

I need help ty-math-