All categories

3 years ago

12/19 - 1/2 5/7 + 3/8 Solve these two I will mark you brainliesat

Mathematics

2 answers:

olga_2 [115]3 years ago

5 0

Answer:

5/38

61/58

Step-by-step explanation:

Answer in the attachment

mamaluj [8]3 years ago

4 0

Answer:

1) 12/19 - 1/2 = 5/38

2) 5/7 + 3/8 = 1 5/56

Step-by-step explanation:

12/19 - 1/2

= (12 * 2 - 19 * 1) / 19 * 2

= (24 - 19) / 38

= 5/38 ---> answer

5/7 + 3/8

= (5 * 8 + 7 * 3) / 7 * 8

= (40 + 21) / 56

= 61/56 ----> now, convert to mixed fraction

= 1 5/56 ---> answer

You might be interested in

Find a quadratic model for the set of values: (-2, -20), (0, -4), (4,-20) Show your work

Usimov [2.4K]

A quadratic function:
$y=ax^2+bx+c$

First, take the point (0,-4) and plug the values (x,y) into the equation:
$-4=a \times 0^2+b \times 0 +c \\
-4=c$

So the equation is $y=ax^2+bx-4$ .

Now plug the values of the other two points into the equation and set up a system of equation:
$-20=a \times (-2)^2+b \times (-2)-4 \\
-20=a \times 4^2+b \times 4-4 \\ \\
-20+4=4a-2b \\
-20+4=16a+4b \\ \\
-16=4a-2b \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ | \div 2 \\
-16=16a+4b \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\div 4 \\ \\
-8=2a-b \\
\underline{-4=4a+b} \\
-12=6a \\
\frac{-12}{6}=a \\
a=-2 \\ \\
-8=2a-b \\
-8=2 \times (-2)-b \\
-8=-4-b \\
-8+4=-b \\
-4=-b \\
b=4$

The function is:
$\boxed{y=-2x^2+4x-4}$

5 0

3 years ago

Read 2 more answers

With a height of 69 in, Ronald was the shortest president of a particular club in the past century. The club presidents of the

maxonik [38]

Answer:

????

Step-by-step explanation:

7 0

3 years ago

Identify the property 65 • 92 • 17 = 92 • 17 • ×

Mars2501 [29]

answer is 65

solving

65x92x17=92x17x

65=x

x=65

6 0

3 years ago

The price of a sofa was $225. The price decreased to $162. What is he percent decrease in the price of the sofa?

zzz [600]

Answer:162

Step-by-step explanation:beacause it says the decreas is 162 and its also asking about price

7 0

3 years ago

What are the solutions to 6x²-5x-4=0?

Mariulka [41]

Answer:

Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

Step-by-step explanation:

Exact Form:

$x=-\frac{1}{2} , \frac{4}{3}$

Decimal Form:

x=-0.5, -1.¯3

Hope this helps :)

5 0

3 years ago