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Sunny_sXe [5.5K]
4 years ago
9

Help I’m really bad at this

Mathematics
1 answer:
kogti [31]4 years ago
4 0

Answer:

72

Step-by-step explanation:

The formula for surface area is SA = 2lw + 2wh + 2lh

W = width

L= length

H = height

A = 2(wl + hl + hw)

2·(6·3+2·3+2·6)

Simplify that down to get the answer 72

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Please answer quickly. I need help bad
weeeeeb [17]

Answer:

B

Step-by-step explanation:

4 0
3 years ago
Given that √5 ≈ 2.2360679775 and ???? ≈ 3.1415926535, find the sum √5 + ???? to an accuracy of 10−8 without using a calculator.
muminat

Answer:

√5 + π  = 537766063.1 × 10^{-8}

Step-by-step explanation:

given data

√5 ≈ 2.2360679775

π ≈ 3.1415926535

to find out

√5 + π

solution

√5 + π  = 2.2360679775 + 3.1415926535

√5 + π  =  5.3776606310

√5 + π  =  5.3776606310 × \frac{10^{-8}}{10^{-8}}

√5 + π  = 537766063.1 × 10^{-8}

3 0
3 years ago
If h(x) = 7 + 6f(x) , where f(4) = 7 and f '(4) = 3, find h'(4).
PolarNik [594]
The answer to that question is If h(x) = 7 + 6f(x) , where f(4) = 7 and f '(4) = 3, find h'(4).
4 0
4 years ago
Use determinants to find out if the matrix is invertible.
wariber [46]

Answer:

The matrix is not invertible.

Step-by-step explanation:

We are given the following matrix in the question:

A =\left[\begin{array}{ccc}-5&0&1\\-1&3&2\\0&10&6\end{array}\right]

Condition for invertible matrix:

A matrix is invertible if and only if the the determinant is non-zero.

We can find the determinant of the matrix as:

|A| = -5[(3)(6)-(2)(10)]-0[(-1)(6)-(2)(0)] + 1[(-1)(10)-(3)(0)]\\|A| = -5(18-20)+(-10)\\|A| = 10-10\\|A| = 0

Since the determinant of the given matrix is zero, the given matrix is not invertible.

5 0
3 years ago
Betty is having invitations printed for a holiday party. It costs $3.90 to set up the printing machine and $2.44 per invitation.
liraira [26]

Answer:

D) $247.90

Step-by-step explanation:

<h3>Understanding the equation:</h3>

\underline{\sf{y = 2.44x + 3.90}}

y is the dependent function whereas x is the independent function.

(<em>What</em><em> </em><em>does</em><em> </em><em>this</em><em> </em><em>mean?)</em>

The values of y depend on the values of x, I.e., any change in the value of x causes a change in the value of y, meanwhile, the opposite doesn't happen.

  • x represents the number of invitations
  • y represents the cost to print the invitations

The cost to print the invitation depends on the number of invitations, for real.

<h3>Solution to the problem:</h3>

The question asks us to find the cost of printing 100 invitations.

Substituting x for 100:

y = (2.44 × 100) + 3.90

y = 244 + 3.90

y = 247.90

<h3>Answer:</h3>

The value of y obtained for x = 100 is the cost of printing 100 invitations – $ 247.90

3 0
3 years ago
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