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4 years ago

12

Janna has $34 and will save $6 per day. write an equation to represent the relationship between the number of days and amount sa

ved. indicate what each variable represents in the equation

1 answer:

Margarita [4]4 years ago

8 0

S = 6d + 34

......................

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Your cellphone plan is by the minute . Each minute of use costs $0.10 . Create a relation that represents the amount spent ,A, p

d1i1m1o1n [39]

Answer:

Talking 65 minutes, $ 6.50 must be paid.

Step-by-step explanation:

Since your cell phone plan is by the minute, and each minute of use cost $ 0.10, to create a relation that represents the amount spent, A, per minute, m, of call time, and then use the relation to find the amount spent if you talk 65 minutes, the following calculations must be performed:

0.10 x M = A

0.10 x 65 = A

6.50 = A

7 0

3 years ago

Box all final answers. Little to no work will reccive little to no credit! I. (5 points) Let A and B be 4 x 4 matrices, with det

FinnZ [79.3K]

Answer: a) -6, b) 32, c) -48, d) 9, e) -12

Step-by-step explanation:

Since we have given that

A and B are 4 × 4 matrices.

Here,

det (A) = -3

det (B) = 2

We need to find the respective parts:

a) det (AB)

$\mid AB\mid=\mid A\mid.\mid B\mid\\\\\mid AB\mid=-3\times 2=-6$

b) det (B⁵ )

$\mid B^5\mid=\mid B\mid ^5=2^5=32$

c) det (2A)

Since we know that

$\mid kA\mid =k^n\mid A\mid$

so, it becomes,

$\mid 2A\mid =2^4\mid A\mid=16\times -3=-48$

d) $\bold{det(A^TA)}$

Since we know that

$\mid A^T\mid=\mid A\mid$

so, it becomes,

$\mid A^TA\mid=\mid A^T\mid \times \mid A\mid=-3\times -3=9$

e) det (B⁻¹AB)

As we know that

$\mid B^{-1}\mid =\mid B\mid$

so, it becomes,

$\mid B^{-1}AB}\mid =\mid B^{-1}.\mid \mid A\mid.\mid B\mid=2\times -3\times 2=-12$

Hence, a) -6, b) 32, c) -48, d) 9, e) -12

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3 years ago

Give the types of quantities

Sergeeva-Olga [200]

Magnitude (how much) and multitude (how many), the two principal types of quantities, are further divided as mathematical and physical.

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3 years ago

Cooper has $200 in a savings account. The interest rate is 10% per year and is not compounded. How much interest will he earn in

taurus [48]

Answer:

The interest is $20 per year

Step-by-step explanation:

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3 years ago

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5.69 Divided By 7 in Divided Decimals by whole numbers

kumpel [21]

Answer:

0.81

Step-by-step explanation:

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3 years ago