Answer:
9
Step-by-step explanation:
Let the number of 10 battery packets is x
and the number of 6 packets battery is y
Now, it has been given that store has a stock of 25 packets. It means
Also, the number of batteries are 186. Thus, the equation is
Plugging the value of y from equation 1,
Hence, there are 9 ten-battery packets.
Answer:
yes, system have a solution
Step-by-step explanation:
Given data
linear equation = 6
unknown = 9
to find out
Will the system necessarily have a solution
solution
we multiply one non zero solution and we know that
A = 6 × 9 matrix
and n = 9
so dim (NulA) = 3
because we know (9-6) = 3
and rank of (A) = n - dim(NulA) = 9 - 3 = 6
so we say now here image of A i.e 6 dimensional subspace (A have 6 row)
so that Col (A) will be
so its mean Ax = b has solution when we have b
so we now say that yes, system have a solution
Answer:
PART A- 4 pounds
PART B- The cub was 4 pounds in March, And then 31 pounds 3 months later. 31-4= 27, therefore, the cub gained more than 25 pounds.
Step-by-step explanation:
Answer: her monthly allowance is $630
Step-by-step explanation:
Let x represent her monthly allowance.
Claire spent $450 of her allowance each month and saved the rest. This means that the amount she saved each month is x - 450
If she increased her spending by 18% her savings would decrease by 30%. The expression for an 18% increase in her spending would be
(18/100 × 450) + 450 = 81 + 450
= 531
The expression for a 30% decrease in her savings would be
(x - 45) - [30/100 × (x - 450)]
= (x - 45) - [0.3(x - 450)]
= (x - 45) - [0.3x - 135]
= x - 45 - 0.3x + 135
= x - 0.3x - 45 + 135
= 0.7x + 90
Therefore,
0.7x + 90 = 531
0.7x = 531 - 90
0.7x = 441
x = 441/0.7
x = $630
The answer is D. 71/4=11.75
4 goes into 71, 11 times and 3/4= 0.75. Hope that makes sense