3 years ago

Find the MIDPOINT between (-12, – 7) and (-8,-4).

Mathematics

1 answer:

DanielleElmas [232]3 years ago

7 0

so you take the average of the x coordinates and the average of the y coordinates to get the midpoint like this

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Explain whether the following given sets are closed under addition:

Ivan

Answer:

Step-by-step explanation:

a) Yes.

$\forall\ a,b\ \in\ B,\ a+b\in B\ (since\ 0+0=0)$

b) Yes

$W=\{0,1,2,3,..,\}\ (whole\ numbers)\\\forall\ a,b\ \in\ 3W,\ a+b\in 3W\\since:\\a\ \in\ 3W \Longrightarrow\ \exists\ k_1\in W | a=3*k_1\\\\b\ \in\ 3W \Longrightarrow\ \exists\ k_2\in W | b=3*k_2\\\\a+b=3*k_1+3*k_2=3*(k_1+k_2) \in 3W\\$

c) Yes

$\forall n\ \in\ \mathbb{N}: \Longrightarrow\ n+1 \in\ \mathbb{N}\\$

d) No

$3\in V , 3+3=6\notin V\\$

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3 years ago

Given complex numbers u and v below,what is uv<br><br> u=7i<br> V=6-i

boyakko [2]

Answer:

7 + 42i.

Step-by-step explanation:

u v = 7i(6 - i)

= 42i - 7i^2 But i^2 = -1 so:

= 42i - 7(-1)

= 7 + 42i.

6 0

3 years ago

What is the circumference of a circle with area 50cm2. Give your answer to three significant figures.

Mnenie [13.5K]

Answer:

c = 25.1

Step-by-step explanation:

C = 2 $\sqrt{pi A}$

C = 2 $\sqrt{3.14 * 50 }$

C = 25.1

Mark me brainly plz

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3 years ago

How you write the number 690001008 standard form

Naddik [55]

Answer:

6.90001008 x 10^8

Step-by-step explanation:

The answer is above

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3 years ago

A worker is paid $9.80 per hour, with time and a half for any hours over 40 per week. If he works 44 hours in a week, what will

VladimirAG [237]

A.450.80

Multiply 40x9.80=392

Take 1/2 of 9.80 that equal 4.90
4.90 plus 9.80 $14.70x4=58.80
$58.80 plus 392 equals 450.80

6 0

3 years ago

Read 2 more answers