To get system B, the second equation in system A was replaced by the sum of that equation and the first equation multiplied by 5. The solution to system B will be the same as the solution to system A.

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

150 adults complete a survey.

NARA [144]

Ratio of men:women in the simplest form is 7:8

Step-by-step explanation:

Step 1: Given total adults = 150. Number of women = 80. Find the number of men.

Number of men = 150 - 80 = 70

Step 2: Find the ratio between men and women.

Men:Women = 70:80 = 7:8

3 0

3 years ago

Kelly has 6 sheets of stickers, with 9 stickers on each sheet. Her aunt gives her 5 more sheets, with 10 stickers on each sheet.

NemiM [27]

104. 54+50. 6 times 9 equals 54. Ten times 5 equals 50.

8 0

3 years ago

Problem #1: Mrs. Grape has 90 students. On her last test, 3/10 of these students earned an A. Of those students, 1/9 got a perfe

fredd [130]

Answer:

3 students got a perfect score.

Step-by-step explanation:

Total number of students in Mrs. Grape's class = 90

Number of students who earned an A = 3/10 of 90

= $\frac{3}{10}\times 90$

= 27 students

Out of 27 students the number of students who got perfect score

= $\frac{1}{9}\times 27$

= 3 students

3 students got a perfect score.

7 0

2 years ago