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ivanzaharov [21]
3 years ago
11

What is the value of the determinant? |1 7| |0 -3|

Mathematics
2 answers:
masha68 [24]3 years ago
8 0

Answer:

-3

Step-by-step explanation:

zhenek [66]3 years ago
5 0

Answer:

- 3

Step-by-step explanation:

Given the 2 x 2 matrix \left[\begin{array}{ccc}ab\\cd\\\end{array}\right]

Then the determinant = ad - bc

Hence for \left[\begin{array}{ccc}1&7\\0&-3\\\end{array}\right]

determinant = (1 × - 3) - (7 × 0) = - 3 - 0 = - 3

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Please answer quickly will give brainliest to correct answer
Mkey [24]

Answer:

a.   π(9^2)(9) - (1/3)(9^2)(9)

step-by-step explanation:

we assume that container a is the whole cylinder, and that container b is the cylinder with the cone carved out.

the formula for the volume of a cylinder is

 vcyl = πr²h

the formula for the volume of a cone is

 vcon = (1/3)πr²h

here, we have r=h=9 in both cases, and we want to find the difference of volumes. filling in the numbers gives

 vcyl - vcon = π(9²)(9) - (1/3)(9²)(9) . . . matches choice a

comment on notation

exponents rarely get copied properly from other applications to brainly, so some editing may be required. if you don't use the equation editor or special mathematical symbols, the plain-text form for an exponent is

 (base)^(exponent) . . . the exponent is signified by a caret (^)

note that grouping symbols may be required. if the exponent has an arithmetic operation in it, then it needs parentheses:

 √(x) = x^(1/2)

 (x^a)(x^b) = x^(a+b)

the use of the word "over" to signify a fraction is unnecessary and ambiguous. the forward slash (/) is usually used for that purpose. as with the caret, any numerator or denominator consisting of more than a single number or letter needs parentheses: (1/a) + (1/b) = (a+b)/(ab). even if you know that the denominator is a single number, as in 1/3, it understanding to put the fraction in parentheses so the appropriate interpretation is clear. (see above for examples. many people write 1/x+1 when they mean 1/(x+1), so if you mean (1/x)+1, it is to write it that way--even though that is how it should be interpreted.)

6 0
3 years ago
Lesson 19 problem set module three grade 7?
yanalaym [24]

Answer:

what is the problem

Step-by-step explanation:

8 0
3 years ago
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Alexxandr [17]
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3 years ago
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tankabanditka [31]

x+y=120_______1

x=4*y_________2

x=4y

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y=24

now,input 24 for y in equation 2

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3 0
3 years ago
Evaluate the expression 2x-y for x=17 and y=12
mafiozo [28]

Answer:

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3 years ago
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