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KIM [24]
3 years ago
12

Sand and gravel are mixed in the ratio 5:3

Mathematics
1 answer:
IrinaK [193]3 years ago
5 0

Answer:

a) 450 gravel   b)1250 sand

Step-by-step explanation:

:)

                           

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How many individual squares does a standard chess board have?
Nostrana [21]
There is two hundred and four (204) on a standard chessboard.
6 0
3 years ago
Help pls!!!! And I will give pizza forever!!!
SOVA2 [1]
The number of red  beads are increasing by 2  for each new pattern
The next number of reds will be 12.  ( in patern 5)

number of blue beads in pattern 5 will be 15 ( increasing by 3 )

nth term for red  = 4 + 2 (n-1)  ( its an arithmetic sequence)

nth term for blue =  3 + 3(n - 1)   - as above ,arithmetic.

Total beads in pattern 45 is

No. red beads in pattern 26   = 4  + 2(26-1)  = 4 + 50 = 54
No  blue beads in pattern 60 =  3 + 3(59)  =  180

Total number of beads in pattern 45 is:-

 4 + 2(44) + 3 + 3(44)  =   227 


7 0
3 years ago
Gage's math teacher entered the seventh-grade student in a math competition. There was an enrollment fee of $30 and also $11 cha
Amanda [17]

Answer:

110 test

Step-by-step explanation:

Let

x ----> the number  of packet of 10 test

y ----> the total cost

we know that

The number of packet of 10 test purchase multiplied by $11 plus the enrollment fee of $30 must be equal to $151

so

The linear equation that represent this scenario is

y=11x+30

we have

y=\$151

substitute

151=11x+30

Solve for x

subtract 30 both sides

11x=151-30

11x=121

Divide by 11 both sides

x=11

The number of packets purchase was 11

To find out the number of test, multiply the number of packets by 10

11(10)=110\ test

4 0
3 years ago
Find the ratio of 3 3/4 to 7 1/4
Sergio039 [100]

Answer:

  15 : 29

Step-by-step explanation:

  (3 3/4) / (7 1/4) = ((3·4+3)/4) / ((7·4+1)/4)

  = (15/4) / (29/4) = 15/29

The ratio of the two numbers is 15 : 29.

5 0
3 years ago
Graph the inequality below on the number line.<br> a&gt;4
aev [14]

Answer:

Open dot on 4 with arrow going to the right.

Step-by-step explanation:

4 is open because it is not part of the set.

6 0
3 years ago
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