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topjm [15]
3 years ago
9

Which number is postitive, 45, -8, -45, -8

Mathematics
2 answers:
musickatia [10]3 years ago
6 0

Answer:

45

Step-by-step explanation:

if it has a subtraction or negative dash in front its negative.

Vanyuwa [196]3 years ago
6 0

Answer:

45

Step-by-step explanation:

Hello! Out of all of these options, 45 is the positive number. The other numbers are all examples of negative numbers. Hope this helps! :D

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Find the values of m and b that make the following function differentiable.
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now, what is the piece-wise when x = 2? well, f(2) = x² or (2)² or 4

that means, the linear needs to hit it at that point, to make it so, let's make it the slope of the linear, the same as the quadratic's.

what's the quadratic's slope? well, simple enough

\bf \left. \cfrac{dy}{dx}=2x \right|_{x=2}\implies 4\impliedby \textit{this means }&#10;\begin{array}{llll}&#10;mx+b\\&#10;\uparrow \\&#10;4&#10;\end{array}

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\bf 4 = 4(2) + b\implies 4=8+b\implies 4-8=b\implies \boxed{-4=b}&#10;\\\\\\&#10;mx+b\implies 4x-4\\\\&#10;-------------------------------\\\\&#10;f(x)=&#10;\begin{cases}&#10;x^2&x\le 2\\&#10;4x-4&x\ \textgreater \ 2&#10;\end{cases}

check the picture below.

4 0
3 years ago
3. At a bargain store, Jamal bought 2 items that each cost the same amount. Isaiah bought 3 items that each cost the same amount
coldgirl [10]

Answer:

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Step-by-step explanation:

a) <u>Jamal spent:</u>

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<u>Isaiah spent:</u>

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<u>The equation is:</u>

  • 2x = 3(x - 2.25)

b) <u>Solving the equation</u>

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c) <u>Jamal's items cost </u>

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<u>Isaiah's items cost </u>

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7 0
2 years ago
Help please i need answers fast if you help or try to help tysm *hearts*
Tanzania [10]

Answer:

C. 3rd one Fraction 10/24

Step-by-step explanation:

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Step-by-step explanation:

Hope This Helped

7 0
1 year ago
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