3 years ago

Given f(x) = 4 - 3x, what is the value of f(-5)?

Mathematics

1 answer:

Studentka2010 [4]3 years ago

3 0

Answer:

Step-by-step explanation:

If f= 4 and x=3 then you times 4 times 5 equals 20

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3 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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4 years ago

Graph the line with slope -1/2 passing through the point (5,-3)

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Step-by-step explanation:

The graph is shown in the image above.

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2 years ago

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What’s the answer??????? Pleaseeeeeeee helppppppppppp

Vinvika [58]

Hello from MrBillDoesMath!

Answer:

Choice A, 18x - 6y = 20

Discussion:

Given line

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Choice A:

18x - 6y = 20 => divide both sides by -2

-9x + 3y = -10 (N)

The left hand sides of (M) and (N) are equal implying that right hand sides are equal which further implies 12 = -10. Contradiction! so the system M and N has no solution.

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4 years ago

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The answer must have to be 40

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3 years ago