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Firlakuza [10]
3 years ago
8

42 + (-31) + (-12) =

Mathematics
2 answers:
LuckyWell [14K]3 years ago
8 0

The answer is -1

Because if you do all the math you will find that the answer is -1.

vivado [14]3 years ago
5 0

Answer:

-1

Step-by-step explanation:

I used a calculator :)

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Can some help meeeeeeeee?
Natali [406]

Answer:

$46.54

Step-by-step explanation:

A=P(1+r/n)^nt

P=220

r=.0325

n=1

t=6

A=266.54

A=P+I

266.54=220+I

I=46.54

8 0
2 years ago
(u+v)*2+2(u+v)-3<br>factorise it completely <br>it's a challenge <br><br><br>​
lions [1.4K]

If you mean

(u+v)^2+2(u+v)-3

you can first substitute x=u+v to get

x^2+2x-3=(x+3)(x-1)

and so

(u+v)^2+2(u+v)-3=\boxed{(u+v+3)(u+v-1)}

3 0
4 years ago
(6x10^7) divided by (2x10^3) give your answer in standard form
kow [346]

Answer:

In the end, the answer is: 30,000

Step-by-step explanation:

<h2>\frac{60,000,000}{2,000} = 30,000</h2>
3 0
2 years ago
Nathan has a rectangular plot of grass in his backyard that has dimensions of meters in width and meters in length. What is the
zalisa [80]

Step-by-step explanation:

This problem bothers on the mensuration of flat shapes, a rectangle.

We know that the area of a rectangular shape is

Area =length x width

Since we don't have any specific data regarding Nathan's plot of land

Let's assume some figure for better understanding

Say the length is 18m

And the width is 12m

Area = 18*12

Area= 216m²

5 0
3 years ago
I want to do this problem in product standard form (5i-3)(2i+1)
Ilia_Sergeevich [38]
<h3>Answer:    -13 - i</h3>

=======================================

Work Shown:

Let x = 5i-3

That allows us to go from (5i-3)(2i+1) to x(2i+1)

Distribute the x through: x*(2i) + x*(1) = 2i*x + x = 2i(x) + 1(x)

Now we replace every x in 2i(x) + 1(x) with 5i-3, and then we distribute a second time

2i(x) + 1(x) = 2i(5i-3) + 1(5i-3)

2i(x) + 1(x) = 2i(5i)+2i(-3) + 1(5i)+1(-3)

2i(x) + 1(x) = 10i^2 - 6i + 5i - 3

2i(x) + 1(x) = 10(-1) - i - 3

2i(x) + 1(x) = -10 - i - 3

2i(x) + 1(x) = -13 - i

Therefore, (5i-3)(2i+1) = -13 - i

The result is in a+bi form where a = -13 and b = -1.

------------------

An alternative method is to use the box method. This is where you set up a grid that helps you multiply out (5i-3)(2i+1)

See the diagram below.

Each of the 4 red terms in the boxes represents the result of multiplying the outer blue and green terms. Example: 5i times 2i = 10i^2 in row1, column1.

7 0
3 years ago
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