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2 years ago

How many solutions?

Mathematics

2 answers:

Blizzard [7]2 years ago

8 0

Answer:

One solution

Step-by-step explanation:

3x+ 9 = 21

3x = 21- 9

3x = 12

x = 12/3

x = 4

So, one solution

noname [10]2 years ago

7 0

Answer:

A. one solution

Step-by-step explanation:

solve for X and the only possible answer would be 4 , so A

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The product of negative three and a number. Please translate.

ZanzabumX [31]

Answer:

$-3n$

Step-by-step explanation:

"The product of negative three and a number." can be written as -3n, or -3 * n, where n is "the number".

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4 years ago

What’s the median ? Marking Brainliest!!

NemiM [27]

Answer:

I'm not going to give you the answer because you need to learn this on your own because it isn't hard.

Step-by-step explanation:

There are 4 main things you investigate in a number line: the median, the mode, the range, and mean. The median is the middle of your data set. You find the number of all of your data and find out the middle of that number. You find what line it is in on your data set. The range is the variety of numbers in your data set (for yours its 10). The mean is the average of your data set. The mode is the number that pops up the most (in your case, 2).

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4 years ago

Explain text functions, count, countif and averageif functions in own words. Looking for some original content.

Lilit [14]

Answer:

count: Sum up a pre-set interval of values in excel cells.

countif: sum up a pre-set interval of values according to certain rules determined by the user.

averageif: sum the values in cells and the divides the result by the total of cells considered in the function.

Step-by-step explanation:

count: Sum up a pre-set interval of values in excel cells.

countif: sum up a pre-set interval of values according to certain rules determined by the user.

averageif: sum the values in cells and the divides the result by the total of cells considered in the function.

3 0

3 years ago

The graphs below have the same shape. What is the equation of the red

anyanavicka [17]

Answer:

Option B is correct .

Step-by-step explanation:

According to Question , both the graph have same shape . If we look at the the first graph it cuts x - axis at (0 , 2) and ( 0 , -2) . Hence x = 2 and -2 are the zeroes of the equation .

And ,the given function is ,

$\implies f(x) = 4 - x^2 \\\\\implies f(x) = 4-x^2=0 \\\\\implies 2^2-x^2=0\\\\\implies (2-x)(2+x) = 0 \\\\\boxed{\red{\bf \implies x = 2 , (-2) }}$

Hence ,we can can see that x = 2 and (-2) are the zeroes of graph. 

This implies that if we know the zeroes , we can frame the Equation.

On looking at second parabola , it's clear that cuts x - axis at ( 1, 0 ) and (-1,0). So , 1 and -1 are the zeroes of the quadratic equation . Let the function be g(x) . Here , a and ß are the zeroes.

$\implies g(x) = (x-\alpha)(x-\beta) \\\\\implies g(x) = (1+x)(1-x) \\\\\boxed{\pink{\bf \implies g(x) = 1 - x^2}}$

Hence option B is correct .

8 0

3 years ago

Read 2 more answers

HELP WILL REWARD

Phantasy [73]

Answer:

We set up our equations:

35x+40y = 1850 eq1

x+y = 50 eq2

Substituting eq 2 into eq 1,

35x+40(50-x) = 1850

35x+2000-40x = 1850

-5x+2000 = 1850

-5x = -150

x = 30

Substitute value of x into eq 2.

x+y = 50

30+y = 50

y = 20

Car 1 consumes 30 gallons of gas.

Car 2 consumes 20 gallons of gas.

hope this helps

6 0

4 years ago

Read 2 more answers