3 years ago

Please help I’m very confused I will mark BRAINLIEST

Mathematics

1 answer:

larisa [96]3 years ago

5 0

a. A number plus seven

b. Five minus a number

c. A number minus two times eight

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What would be the answer to both?

dezoksy [38]

Answer:

f(- 3) = 51, g(2) = - 11

Step-by-step explanation:

To evaluate f(- 3), substitute x = - 3 into f(x), that is

f(- 3) = - 2(- 3)³ - 3 = - 2(- 27) - 3 = 54 - 3 = 51

Similarly for g(2)

g(2) = - 5(2) - 1 = - 10 - 1 = - 11

6 0

4 years ago

Bruce is solving a system of equations.

Valentin [98]

Answer:

Option 3,4,5 are correct.

Step-by-step explanation:

The system of equations are:

$3x+5y=9\,\,\,\,(1)\\x-y=-5\,\,\,\,(2)$

Multiply equation (2) with -3 and add with equation (1)

$3x+5y=9\\-3x+3y=15\\-------\\8y=24\\y= 24/8\\y=3$

Value of y is 3

Putting value of y in eq(2)

$x-y=-5\\x-3=-5\\x=-5+3\\x=-2$

Value of x is -2

So, Option 3,4,5 are correct.

Keywords: System of Equations

Learn more about System of Equations at:

#learnwithBrainly

7 0

3 years ago

1. The table shows the number of men and women who have entered a grocery store.

erik [133]

The outcome will be 3. 4/9.

And yes, I know I'm a day late.

7 0

3 years ago

Read 2 more answers

To the nearest millimeter, a cell phone is 86 mm long and 40 mm wide. What is the ratio of the width to the length?

MAXImum [283]

Answer:

20 : 43

Step-by-step explanation:

width : length

40 mm : 86 mm

40 : 86

20 : 43

4 0

2 years ago

Help<br> the answer must be with equation please

Ostrovityanka [42]

Answer:

20/72.

Please say it is very good :(

6 0

3 years ago