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Lorico [155]
3 years ago
12

Find the solution of this system of equations -X + 8y = -35 -X - 9y = 50

Mathematics
2 answers:
grigory [225]3 years ago
7 0

Answer: (-5,-5)

Step-by-step explanation: The two lines meet up at (-5,-5)

lesya [120]3 years ago
6 0

Answer:

y = 5

x= 75 ( not confident about x)

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In a class full of men and women, 2/9 of the class are women. What is the ratio of men to
RUDIKE [14]

Answer:

2:7

Step-by-step explanation:

if 2/9 of the class are women then 7/9 of the class are men.

\frac{2}{9}:\frac{7}{9}\\ 2*9:7*9\\18:63\\\frac{18}{9}:\frac{63}{9}\\2:9

6 0
3 years ago
A parking lot has 7 red cars out of a total of 35 cars. What percent of the cars in the parking lot are red? Enter your answer i
atroni [7]

Answer:

20%

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Help help help help please i need it :) !!
Maksim231197 [3]

Answer:

Step-by-step explanation:

Area of the field = pi * r^2

r = 230/2 = 115

Area of the field = 3.14 * 115^2 = 41526.5 square feet.

Number of bags = 41526.5/400 = 103.82 bags

5 0
3 years ago
In the year 1999, the surface elevation of Lake Powell was 3893 feet above sea level. In the year 2005, the surface elevation of
Sati [7]

Answer:

Rate of Change = -77.9 feet/year

My interpretation: "Is Bad."

Step-by-step explanation:

The rate of change is the number of feet that Lake Powell dropped, divided by the number of years the drop took place.  We want a value with a unit of feet/year.

<u>Year</u>    <u>Feet</u>

1999     3893

2005    3425.6  

<u>Change</u>

Year = (2005 - 1999)  or 6 years

Feet = (3425.6 - 3893) or -467.4 feet

Rate of Change = (-467.4 feet)/(6 years)

Rate of Change = -77.9 feet/year

=======================

FYI:  Lake Powell is 22.39 feet lower today (June 23, 2022) than it was 1 year ago.

8 0
2 years ago
Explain why a number that is divided by a multiple of 3 is also divisible by 3
Sonja [21]

It is a reciprocal. Multiplying is the opposite of Dividing, so if I multiply 3 times 4 I get 12. If i divide 12 by 3 I get 4.

8 0
4 years ago
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