shippy2003 shippy2003

01-12-2020
Mathematics

contestada

10x + 4y = 20
13x - 4y = -66
If x = -2, what is the value of y?

Respuesta :

jovemarlie07 jovemarlie07

01-12-2020

Answer:

y = 10

Step-by-step explanation:

If x = -2

10x + 4y = 20

10(-2) + 4y=20

-20+4y=20

4y= 20+20

4y=40

y=10

If x=2 and y=10

13x - 4y = -66

13(-2) - 4(10) =-66

-26 -(-40) = 66 so it all checks out!!

Answer Link

Otras preguntas

Which sentence uses the correct verbs? A. Ashley wonders why no one, even her mom and dad, ever notice that the bathroom faucet drips. B. Ashley wonders why no

Rewrite each of the following as an expression of x which does not involve any logs. 100^log10(x)

Why does the narrator confess his crime? The police accuse him of the crime. He thinks the police are able to hear the heartbeat he hears. He wants to expla

Why was the Ottoman Empire a desirable territory for European nations during the nineteenth century

Can someone answer these 2 questions please? Thanks

who was the first country to recognize US as an independent country ?

A bicycle has a listed price of $519.95 before tax. If the sales tax rate is 9.75% , find the total cost of the bicycle with sales tax included.

waste removal is carried out in the

which gas is strongly correlated with earth's heating and cooling patterns

QUESTION 3 What proportion of American adults are technically obese (have a BMI in the obese category)? A. About 1/2. B. About 2/3. C. About 1/8.