All categories

3 years ago

T W hat is the value of 3ab+50-6 when a=-1 and D=3? - - ООО

Mathematics

1 answer:

rodikova [14]3 years ago

3 0

Answer:

Step-by-step explanation:

i'm either really confused or there's a lot of weird typos in this

assuming there's just a lot of weird typos, this is how you would solve it:

1. plug in -1 for a and 3 for b

$3(-1)(3)+50-6$

2. multiply 3 by -1

$3(-3)+50-6$

3. multiply 3 by -3

$-9+50-6$

4. add 50 to -9

$41-6$

5. subtract 6 from 41

$35$

You might be interested in

In 2003, the population of Zimbabwe was about 12.6 million, which was 1 million more than 4 times the population in 1950. Write

JulsSmile [24]

Let's set the population of Zimbabwe in 1950 equal to x.

So in 2003, the population was 12.6 million. So our equation should equal 12.6 million. Here's how you turn the other parts of the problem into an equation:
4x + 1m = 12.6 m

Now to solve.

4x = 12.6m - 1m
4x = 11.6m
x = 11.6m/4
x = 2.9m
In 1950, the population was 2.9 million

5 0

3 years ago

A square has a perimeter of 8 cm. What is its area?

serious [3.7K]

A square has four sides which all have the same length.

So if we call the length of each side of the square 'a'

The sum of length of all the sides (the perimeter) will be ,

a + a + a + a = 4a

Now let's equal this to the perimeter to find the length of each side 'a'

$4a\quad =\quad 8\\ \\ a\quad =\quad \frac { 8 }{ 4 } \\ \\ a\quad =\quad 2$

So the length of each side of the square is 2 cm

To find area of a square we multiply the length of its two sides

So,

$a\cdot a$ is the area of the square,

$a\cdot a=\quad 2\cdot 2\quad =\quad 4\\ \\ 4\quad c{ m }^{ 2 }$

The answer :

$\boxed { 4\quad c{ m }^{ 2 } }$

6 0

4 years ago

Read 2 more answers

Carly got her haircut for $45.60 she wants to tip her hair dresser 15% what is her total paid?

egoroff_w [7]

Answer:

$52.44

Step-by-step explanation:

Long method:

1. Convert the percentage into a decimal (15/100 = 0.15)

2. Multiply the decimal by the cost of the haircut (0.15 x $45.60 = $6.84)

3. Add this product by the cost of the haircut ($6.84 + $45.60 = $52.44)

Quicker Way (easier w/ a calculator)

1. Add 100% to the percentage she wants to add (100% + 15% = 115%) You can also express this as a number (115/100 = 1.15)

2. Multiply this new percentage by the cost of the haircut (1.15 x $45.60 = 52.44)

In a single equation, it would be

$\frac{115}{100} \times 45.60 = 52.44$

5 0

3 years ago

If the scale factor is

klemol [59]

If the scale factor is 1/5, then the area of the preimage is multiplied by 0.2 or 1/5 to calculate the area of the new image.

6 0

3 years ago

plant a is 5 centimeters tall and going at the rate of 3 centimeters in a month. plan B is 4 centimeters tall and growing at the

pav-90 [236]

I need more information sorry

3 0

4 years ago