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enyata [817]
3 years ago
5

Simplify this expression;3(2x+7)

Mathematics
2 answers:
dolphi86 [110]3 years ago
6 0

Answer:

You should try the distributive property of multiplication:

3(2x+7)

=

3 x  2x = 6x

3 x 7 = 21

Therefore:

6x + 21

Advocard [28]3 years ago
5 0

Answer:

6x+21 (Maybe)

Are you doing the buddy method, how is your teacher wanting to do this, When you respond I might have the correct answer

(buddy method) Multiply the 2x and 7 by the 3 giving you 6x+21 and then that's it you cant do anything else but I don't know if that's how you're teacher wants it done.


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The ratio of two complementary angles is 7:2. What is the measure, in degrees, of the larger angle?
AnnZ [28]

Answer:

The larger angle is 70°

And The smaller angle is 20°  .

Step-by-step explanation:

Given as :

The ratio of two complementary angles = 7 : 2

Let The larger angle = 7 x

And The smaller angle = 2 x

Now, According to question

<u>Complementary angle is define as when two angles were added to make right angle i.e 90° are complementary to each other .</u>

So, here

7 x + 2 x =  90°

Or, 9 x =  90°

∴  x = \dfrac{90^{\circ}}{9}

i.e x = 10°

Now, putting the value of x

So, The larger angle = 7 × 10° = 70°

And The smaller angle = 2 × 10° = 20°

Hence, The larger angle is 70°

And The smaller angle is 20°  . Answer

7 0
4 years ago
I have no idea what this means
Natali [406]
The answer is boxed in. follow the arrows.

7 0
3 years ago
A standard deck of cards contains 52 cards. one card is selected from the deck. ?(a) compute the probability of randomly selecti
Rama09 [41]
Let
P(h)= probability of selecting heart = 13/52= 1/4
similarly
P(s)= probability of selecting spade =1/4
P(c)= probability of selecting club =1/4
P(d)= probability of selecting diamond =1/4

a)

P(h or s)= P(h)+P(s)= 1/4+1/4=2/4=1/2=0.5

b)

P(h or s or c)=P(h)+P(s)+P(c)=1/4+1/4+1/4=3/4=0.75

c) 

P(2 or a diamond)=n(2heart, 2spade,2club,13 diamonds)/total number of cards

=(1+1+1+13)/52=16/52=4/13=0.3

or we could solve it as follows:

P(2 or a diamond)=P(2)+P(diamond)-P(2diamond)=4/52  +  13/52  + 1/52  = (4+13-1)/52=16/52=0.3
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3 years ago
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GarryVolchara [31]

Answer:

$12

Step-by-step explanation:

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