fikayoduyile01 fikayoduyile01

02-09-2020
Mathematics

contestada

Solve the simultaneous equation.......2x + 10y = 50 (equation 1) and 1.5x + 25y = 90 (equation 2)

Respuesta :

02-09-2020

Step-by-step explanation:

2x + 10y = 50 ... 1

1.5x + 25y = 90 ...2

...1 × 2.5

5x + 25y = 125 ...3

...3 - ...2

3.5x = 35

x = 10

replaced x = 10 in ...1

2(10) + 10y = 50

20 + 10y = 50

10y = 50 - 20

10y = 30

y = 3

Answer Link

Otras preguntas

Which expression represents the perimeter of the triangle? 8x + 2 18x 8x

A motor car tyre contained a fixed mass of air at 27 °C. Its pressure was 220 kN m2 above atmospheric pressure. After a 60-minute drive, the air pressure rose t

What foreign-policy move did the United States make in exchange for greater trade access to Japan? A. It accepted Japanese control of Korea. B. It withdrew from

Diberi 1 ½s = ⅗t² + ⅓u², hitung (ii) nilai t apabila u = -6 dan s = 28

how do we find thadhbav and thathsam for hindi grammer please reply fast my exam is in 1 1/2 days

The cost of a rice cooker with 13% VAT is Rs 4,068.

4. Which of the following is not a common benefit of electronic claims submission? a. reduced error rate b. processing of personal injury protection (PIP) forms

prepare a report about the development activities carried out at your locality

Which of the following best defines balanced forces? A. Forces that act in opposite directions and cancel each other out B. Unequal forces that do not cancel ou

Pls Help :(((If a^x=b^y=c^z is a system of exponential expression where b^2=ac Prove that 1/x + 1/z = 2/y