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3 years ago

Brian and Katie have $40 to spend at the store.

Mathematics

2 answers:

Bumek [7]3 years ago

6 0

$20 dollars is the change not including tax with tax is 19.33

Rina8888 [55]3 years ago

4 0

Answer:

It would be 20

Step-by-step explanation: 4x1=4+2x2=4+3+3x3=9 final answer 40-20=20

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A boat travels 500 miles in 29

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So in 13 hours it would have gone 221miles

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2 years ago

Determine the slope of the line passing through (4, −2) and (7, 10).

Paha777 [63]

Answer:

Step-by-step explanation:

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10+2/7-4

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2 years ago

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3 years ago

Help me please!

telo118 [61]

Answer:

$f^{-1}(6) = 50$

Step-by-step explanation:

Given

$f(x) = \sqrt{2x} - 4$

Required

Find $f^{-1}(6)$

First, we calculate the inverse function

$f(x) = \sqrt{2x} - 4$

Express f(x) as y

$y = \sqrt{2x} - 4$

Swap the positions of x and y

$x = \sqrt{2y} - 4$

Solve for y: Add 4 to both sides

$4 + x = \sqrt{2y} - 4+4$

$4 + x = \sqrt{2y}$

Square both sides

$(4 + x)^2 = 2y$

Divide both sides by 2

$y = \frac{(4 + x)^2}{2}$

Express y as an inverse function

$f^{-1}(x) = \frac{(4 + x)^2}{2}$

Next, solve for: $f^{-1}(6)$

Substitute 6 for x

$f^{-1}(6) = \frac{(4 + 6)^2}{2}$

$f^{-1}(6) = \frac{(10)^2}{2}$

$f^{-1}(6) = \frac{100}{2}$

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3 years ago

Find the product -mnp(3m-5n+7p)

allochka39001 [22]

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=((−m)(n)p)(3m+−5n+7p)

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=−3m^2np+5mn^2p−7mnp^2

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3 years ago