3 years ago

What is a multiplication equation that has a solution of 12

Mathematics

2 answers:

juin [17]3 years ago

7 0

Answer:

4 x 3 = 12

Step-by-step explanation:

12 x 1 = 12

6 x 2 = 12

sergeinik [125]3 years ago

5 0

Answer:

3x4

Step-by-step explanation:

1x12

2x6

3x4

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At a school number of boys : number of girls = 11 : 9

aliya0001 [1]

Ok, so 11:9
11-9 = 2
which means that 124= 2:1
124/2 = 62
so 62:0
now 11 x 62= 682
9 x 62= 558

so the ratio is 682:558
now 682 + 558 = 1,240
There are 1,240 total students in the school. 682 boys and 558 girls

8 0

3 years ago

Let y=f(x)=(3x+7)/(x-2) <br> find a rule for f^-1

Murrr4er [49]

Answer:

$f^{-1}(x)=\frac{2x+7}{x-3}$ .

Step-by-step explanation:

The given function is $f(x)=\frac{3x+7}{x-2},\:x\ne2$ .

We want to find a rule for $f^{-1}(x)$ .

Let $y=\frac{3x+7}{x-2}$ .

Interchange x and y.

$x=\frac{3y+7}{y-2}$ .

Solve for y.

$x(y-2)=3y+7$ .

Expand

$xy-2x=3y+7$ .

Group y-terms

$xy-3y=7+2x$ .

Factor

$(x-3)y=7+2x$ .

$y=\frac{2x+7}{x-3}$ .

$\therefore f^{-1}(x)=\frac{2x+7}{x-3},\:x\ne3$ .

8 0

3 years ago

Help me on all these problems!

AleksAgata [21]

For 7: because of the decimal place in the 0.6 it's not a huge number and it's not possible to get a big number like 15000

For 8: because again a fraction dividing is not going to do much you can't get a big difference like the number 30.

6 0

3 years ago

Read 2 more answers

An object is taken out of a 21 degree C room and placed outside where the temperature is 4 degree C. Twenty-five minutes later t

kirza4 [7]

Answer: The temperature of the object after one hour is 12.9°C to the nearest tenth of a degree

Step-by-step explanation:

Please see the attachments below