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Elina [12.6K]
3 years ago
6

Look at the pattern below.

Mathematics
1 answer:
jonny [76]3 years ago
7 0

Answer:

21 squares

Step-by-step explanation:

6+5+4+3+2+1=21

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A special deck of cards has 3 blue cards, and 7 orange cards. The blue cards are numbered 1, 2, and 3. The orange cards are numb
brilliants [131]

Answer:

A.. Number of elements in the sample space is 10.

B.. Given that event B is card drawn is blue.

Step-by-step explanation:

Special deck has3 blue and 7 orange cards. The blue cards are numbered 1, 2 and 3. The orange cards are numbered 1, 2, 3, 4, 5, 6 and 7.

We draw one card randomly from the deck, the sample space is

S={b1, b2, b3, o1, o2, o3, o4, o4, o6, o7}

Where,

'b' represents blue card

And 'o' represents orange cards.

Number of elements in the sample space is 10.

Given that event B is card drawn is blue.

B={b1, b2, b3}.

7 0
3 years ago
Read 2 more answers
Please answer asap will give the highest points possible
natali 33 [55]
Let cheese wafers = x
chocolate wafers = y

we know they bought 20 total packets so x+y = 20, this can be re-written as x = 20-y

cheese wafers cost 2, so we have 2x
chocolate wafers cost 1, so we have 1y, which is just the letter y

so we know 2x + y = $25

replace x with x=20-y to get:

2(20-y)+y = 25

distribute the parenthesis:

40-2y +y = 25

combine like to terms to get:
40-y = 25

subtract 40 from each side"
-y = -15

divide both sides by -1
y = 15

chocolate wafers was y so they bought 15 chocolate wafers
cheese wafers was x, so they bought 20-15 = 5 cheese wafers
 
using the substitution method was the easiest way to isolate one of the variables in order to find the solution.



6 0
3 years ago
Read 2 more answers
2. A rectangle has a perimeter of 100. Its
slava [35]

Answer:

Option H

Step-by-step explanation:

Perimeter of rectangle= 2(length) +2(width)

100= 2(5a -22) +2[½(a +1)]

Expand:

100= 2(5a) +2(-22) +a +1

100= 10a -44 +a +1

Simplify:

100= 11a -43

+43 on both sides:

11a= 100 +43

11a= 143

Divide both sides by 11:

a= 143 ÷11

a= 13

Thus, option H is correct.

8 0
3 years ago
A student takes a multiple-choice test with 8 questions on it, each of which has 4 choices. The student randomly guesses an answ
zimovet [89]

Answer:

0.900

Step-by-step explanation:

hope it helps u

need more answers?

just follow me

3 0
3 years ago
-2-(-9)-(-2)<br>plz show work​
BaLLatris [955]

Answer:

-2-(-9)-(-2)=-2+9+2

=9

3 0
2 years ago
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