3 years ago

5x+2y=7 7x+2y=5 i need it right

Mathematics

2 answers:

atroni [7]3 years ago

8 0

5x+2y=7 7x-2y=5 its subtract not add

aleksandr82 [10.1K]3 years ago

7 0

I solved it in the image below.

You might be interested in

What value of x makes this equation true?<br><br> 6x - 3 = 5x - 5

malfutka [58]

Answer:

x= - 2

Step-by-step explanation:

3 0

3 years ago

A can in the shape of a cylinder has a diameter of 6 centimeters and a height of 10 centimeters. Which measurement is closest to

VladimirAG [237]

Answer:

245.04

Step-by-step explanation:

A=2πrh+2πr2=2·π·3·10+2·π·32≈245.04423

u have to divide 6 and 2 to find the radius

hope this helps

7 0

3 years ago

Read 2 more answers

A business knew that 30%, percent of its customers were less than 25 years old. The business wanted to increase this percentage,

jeyben [28]

Answer:

The answer is "0.9258201 or $\bold{ \frac{0.36 -0.3}{\sqrt{\frac{0.3 \times 0.7 }{50}}}}$ ".

Step-by-step explanation:

$\to P= 30 \ \%\\\\ \to x= 18 \\\\ \to n=50\\\\\\\hat p= \frac{x}{n} = \frac{18}{50} = 0.36 \\\\\bold{Formula:}\\\\X= \frac{\hat p -p}{\sqrt{\frac{p \times (1-p)}{n}}}\\\\$

$= \frac{0.36 -0.3}{\sqrt{\frac{0.3 \times (1-0.3)}{50}}}\\\\= \frac{0.36 -0.3}{\sqrt{\frac{0.3 \times 0.7 }{50}}}\\\\= \frac{0.36 -0.3}{\sqrt{\frac{0.21}{50}}}\\\\= \frac{0.06}{\sqrt{0.0042}}\\\\= \frac{0.06}{0.064807407}\\\\= 0.9258201$