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Ronch [10]
3 years ago
10

Please help! I dont understand this, I will give 15 points!

Mathematics
1 answer:
puteri [66]3 years ago
4 0

Answer:

Step-by-step explanation:

common denominator is the multiplication of the two denominator or the least common multiple of the two

                    common denominator 24              10                 12

13/24 +7/12                   ☑ ☑

7/6+(-5/12)                                                                                  ☑  ☑

-3/4+(-2/3)                                                                                  ☑  ☑

5-7/10                                                                     ☑  ☑

1/8 - 5/3                          ☑  ☑

3/2 - 4/5                                                                  ☑  ☑

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Which are solutions of the equation x2 - 16 = 0? Check all that apply.
Maurinko [17]
Last one
Because you have to substitute it
So you do X times 2 - 16 = 0
And the only X that works is the last one cause 8 X 2 = 16 and 16 -16=0
5 0
2 years ago
On Sunday, a local hamburger shop sold a combined total of 428 hamburgers and cheeseburgers. The number of cheese burgers sold w
melisa1 [442]
The equation you can use is x + 3x = 428 with x as the number of cheeseburgers and 3x the number of hamburgers 
you solve for x and get 4x= 428 and x=107

so 321 hamburgers were sold that day.
5 0
3 years ago
What is negative 21/9 times negative 18/7
diamong [38]

Answer:

negative 21/9 times negative 18/7  is 6

Step-by-step explanation:

The phrase negative 21/9 times negative 18/7 can be written mathematically as

-\frac{21}{9} \times -\frac{18}{7}

Lets first convert the fractions into decimal values

-\frac{21}{9} = -2.33

-\frac{18}{7} =  -2.57

Now on simplyfying

=>-2.33 \times -2.57

=> 5.988

=>6 (rounding off)

We will get a positive value because the multiplicative law states that the product of two negative number is positive

5 0
3 years ago
5. Consider the diagram below. Solve for x.
mrs_skeptik [129]

Answer:

41 degrees

Step-by-step explanation:

The three angles need to add up to 180 degrees!

4 0
3 years ago
Help please !! Thank u
leonid [27]

Answer:

parallel = same slope (-2x)

so it's y=-2x + b

let's find b by plugging in 1 for x and 3 for y (the coordinates)

3 = -2*1 + b

3 = -2 + b

5 = b

there you have it:

y = -2x +5

brainliest would really be appropriated (possible when someone else also leaves an answer)

4 0
3 years ago
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