2 years ago

How many solutions does this linear system have? y = 2x-5 -8x – 4y = -20

Mathematics

1 answer:

krek1111 [17]2 years ago

7 0

Answer:

it has only 1 solution

Step-by-step explanation:

(the lines only intersect once)

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Which expression has a value of 7/12 ? 7/8 + 4 , 1/3 + 1/4 , 6/8 + 1/4 , 2 1/12 + 5 1/12

vazorg [7]

Answer:

$\frac{1}{3} + \frac{1}{4}$

Step-by-step explanation:

We want to find an expression that has a value of

$\frac{7}{12}$

First option:

$\frac{7}{8} + 4 = \frac{7}{8} + \frac{32}{8} = \frac{39}{8} \ne \frac{7}{12}$

Second option:

$\frac{1}{3} + \frac{1}{4} = \frac{4}{12} + \frac{3}{12} = \frac{7}{12}$

Correct option

Third option

$\frac{6}{8} + \frac{1}{4} = \frac{3}{4} + \frac{1}{4} = 1$

Fourth option:

$2 \frac{1}{12} + 5 \frac{1}{12} = \frac{43}{6}$

5 0

2 years ago

The sum of three consecutive numbers is 72 what are the smallest of these numbers

Airida [17]

A + b + c = 72

a = b - 1

c = b + 1

(b - 1) + b + (b + 1) = 72

Simplify

3b = 72

b = 24

a = 24 - 1

a = 23

8 0

2 years ago

Solve :(use unitary method)

andre [41]

Answer:

a. 8

b. 114

Step-by-step explanation:

36/6 = 48/x

36x = 288

x = 8

12/72 = 19/x

1/6 = 19/x

x = 114

8 0

2 years ago

Find the value of x in the figure below:

KIM [24]

Answer:

let remaining angle in heptagon be a.

a+64=180(linear pair)

a=116

again

x+155+90+163+a+121°=720(sum of interior angle of hexagon is (6-2)×180°)

x+529+a=720

x+116=720-529

x=191-116=75

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2 years ago

A container holds 8 quarts of lemonade. How much is this in gallons?

Arturiano [62]

2 Gallons is 8 quarts.

8 0

3 years ago