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Inessa [10]
2 years ago
14

Help pls. will give brainliest.

Mathematics
1 answer:
vladimir1956 [14]2 years ago
3 0

Answer:

A

Step-by-step explanation:

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The table shows the relationship between the number of bracelets made and the number of beads used. The number of beads used to
sp2606 [1]

Answer:

It would be 63

Step-by-step explanation:

This is because 9 x 7 = 63

Simple math.

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3 years ago
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Which of the following statements are true of solving equations?
katrin2010 [14]

we will check each options

option-A:

For solving any equations , we always isolate variables on anyone side

For exp: x+7=1

so, this is TRUE

option-B:

For solving system of equations

For exp:

x-y=1

x+y=3

If we use addition , we could easily solve for x and y

so, this is TRUE

option-C:

We always solve problems using conventional method

we do not guess

so, this is  FALSE

option-D:

We often reverse order of operation

For exp:

(x-2)^2-3=0

so, this is TRUE

option-E:

For linear equations , we always get one solution , infinite solutions or no solutions

so, this is FALSE

5 0
2 years ago
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11. The completion of a chemical reaction is expressed by the equation y = 300 - 4x - XP, where y is
alina1380 [7]

Answer:

The reaction ca occur at 10 degree Celsius or -14 degree Celsius.                                          

Step-by-step explanation:

We are given the following in the question:

The completion of a chemical reaction is expressed by the equation

y = 300 - 4x -x^2

where y is  the number of seconds needed to complete the reaction and x is the temperature in degrees Celsius  at which the reaction occurs.

We have to find the temperature at which the reaction occurs, if the completion time of reaction is 160 seconds.

Putting y = 160

160 = 300 - 4x -x^2\\x^2 + 4x  - 140 = 0\\x^2 + 14x -10x -140 = 0\\x(x+14)-10(x+14)=0\\(x-10)(x+14) = 0\\(x-10) =0, (x+14) =0\\x = 10, x = -14

Thus, the reaction ca occur at 10 degree Celsius or -14 degree Celsius.

5 0
2 years ago
What kind of line is y=3? horizontal, vertical,slanted?
Firdavs [7]

As there is no x axis it will have to be vertical as the y axis is already vertical


7 0
2 years ago
Convert to improper fraction 15/6 into a mix number. Show your work.
Alchen [17]

Answer:

15 divided by 6 is equivalent to 5/2. When dividing that, you get 2 and then 2/4 as the decimal portion.

Simplified it would be 2 and 1/2

6 0
2 years ago
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