3 years ago

Okmarks

Mathematics

1 answer:

joja [24]3 years ago

8 0

Answer:

x = - 1

y = -3

Step-by-step explanation:

4x - 5y = 11

-4x + y = 1 +

----------------------

-4y = 12

y = -3

Now, plug y = -3 back into any equation

-4x - 3 = 1

-4x = 4

x = - 1

You might be interested in

When I halve it,<br> the result is 3 less than 5.

daser333 [38]

Answer: 4 .
_____________

n/2 = 5 - 3 ;
_______________

n/2 = 2 ;

_______________

n = 2*2 ;
_______________

n = 4 .
_______________

7 0

4 years ago

Read 2 more answers

In a survey of 300 house wires. It was discovered

ruslelena [56]

Answer:

46 housewives read all three magazines.

Step-by-step explanation:

Given:

n(A) = 150

n(B) = 200

n(C) = 156

n(A∩B) = 48

n(B∩C) = 60

n(A∩C) = 52

n(A∪B∪C) = 300

so we know the relation as:

n(A∪B∪C) = n(A) + n(B) + n(C) - n(A∩B) - n(B∩C) - n(A∩C) + n(A∩B∩C)

∴ n(A∩B∩C) = n(A) + n(B) + n(C) - n(A∩B) - n(B∩C) - n(A∩C) - n(A∪B∪C)

= 150 + 200+ 156 - 48 - 60 - 52 - 300

= 46

Hence the number of housewives that had read all three magazine is 46.

8 0

3 years ago

Dean is slowing down on his skateboards. He starts at a speed of 5.5 m/s and slows to 1.0 m/s over a time of 3.0 seconds. What i

Brums [2.3K]

Answer:

1.5m/s^2

Step-by-step explanation:

acc= change in velocity/time

acc=5.5-1/3

acc=4.5/3

acc=1.5

5 0

3 years ago

Floyd's employer purchased a health insurance plan that costs $825 per month. Floyd pays $105 toward the plan each month. What i

mash [69]

825-105=720. 720x12=8640

4 0

3 years ago

Read 2 more answers

Find the area of the following rectangle in square feet. 44 ft 2 11 ft 2 14.7 ft 2 132 ft 2

uysha [10]

The picture in the attached figure

we know that
area of rectangle=base*height
in this problem
base is 22 ft
height is 2 yd

convert yd to ft
1 yd is equal to 3 ft
2 yd--------> 2*3-----> 6 ft

area of rectangle=22*6-----> 132 ft²

the answer is
132 ft²

8 0

4 years ago

Read 2 more answers