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3 years ago

Evaluate the function f (x)=-2x+3 for x=-1

Mathematics

1 answer:

vazorg [7]3 years ago

3 0

Answer:

f ( - 1 ) = 5

Step-by-step explanation:

Step 1:

f ( x ) = - 2x + 3 Function

Step 2:

f ( - 1 ) = - 2 ( - 1 ) + 3 Input x value

Step 3:

f ( - 1 ) = 2 + 3 Multiply

Answer:

f ( - 1 ) = 5 Combine Like Terms

Hope This Helps :)

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Assume that lines that appear to be tangent are tangent. O is the center of the circle. In degrees, what is the value of x?

Nastasia [14]

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Answer:

145

Step-by-step explanation:

In this geometry, the central angle (x°) and the external angle (35°) are supplementary.

x° = 180° -35°

x = 145

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2 years ago

A trucking firm has a large inventory of spare parts that have been in storage for a long time. It knowsthat some proportion of

Debora [2.8K]

Answer:

$0.1546\leq \widehat{p}\leq 0.3513$

Step-by-step explanation:

The firm tests 75 parts, and finds that 0.25 of them are notusable

n = 75

x = 0.25 \times 75 = 18.75≈19

$\widehat{p}=\frac{x}{n}$

$\widehat{p}=\frac{19}{75}$

$\widehat{p}=0.253$

Confidence level = 95%

So, Z_\alpha at 95% = 1.96

Formula of confidence interval of one sample proportion:

$=\widehat{p}-Z_\alpha \sqrt{\frac{\widehat{p}(1-\widehat{p}}{n}}\leq \widehat{p}\leq \widehat{p}+Z_\alpha \sqrt{\frac{\widehat{p}(1-\widehat{p}}{n}}$

$=0.253-(1.96)\sqrt{\frac{0.253(1-0.253)}{75}}\leq \widehat{p}\leq0.253+(1.96)\sqrt{\frac{0.253(1-0.253}{75}}$

Confidence interval $=0.1546\leq \widehat{p}\leq 0.3513$

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3 years ago

Sami has 89 video games. He keeps 14 for himself and distributes the remaining video games to each

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Answer:

89=14-5x

Step by step

Because 14 is how many he keeps and x5 is how many he gives to his cousins in total

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3 years ago

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Step-by-step explanation:

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2 years ago

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2 years ago