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3 years ago

If a = 3, b = – 1 and c = 2, then a + b + c

Mathematics

1 answer:

Firdavs [7]3 years ago

5 0

The answer is 4
3-1=2

2+2=4

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The graph below shows the distance, y, in miles, of a bird from its nest for a certain amount of time, x, in minutes:

Bogdan [553]

Answer:

Step-by-step explanation:

The y-intercept (0, 3) is initial value of graph ⇒ (d). <em>3 miles; it represents the original distance of the bird from its nest</em>

7 0

3 years ago

Read 2 more answers

A Rasmussen Reports survey of 1,000 US adults found that 42% believe raising the minimum wage will help the economy. Construct a

vitfil [10]

Answer:

(0.3798, 0.4602)

Step-by-step explanation:

Let p be the true proportion of US adults who believe raising the minimum wage will help the economy. A point estimate for p is $\hat{p}=0.42$ and a good aproximation (because we have a large sample) for the standard deviation of $\hat{p}$ is $\sqrt{\hat{p}(1-\hat{p})/n}=\sqrt{0.42(0.58)/1000}=0.0156$ . Therefore, a 99% confidence interval for p is given by $\hat{p}\pm z_{\alpha/2}\sqrt{\frac{\hat{p}(1-\hat{p})}{n}}$ where $\alpha=0.01$ and $z_{\alpha/2}$ is the $\alpha/2$ th quantile of the standard normal distribution, so we have, $0.42\pm z_{0.005}0.0156$ , i.e., $0.42\pm(-2.5758)(0.0156)$ or equivalently (0.3798, 0.4602).

6 0

3 years ago

What is the size of angle c?

lesantik [10]

Answer:

55°

Step-by-step explanation:

d = 180 - 80 = 100

100 + 130 + 90 + (180 - 85) + (180 - c)

= 540

595 - c = 540

c = 595 - 540

c = 55°

6 0

3 years ago

Help me in number 8 plzz

Karo-lina-s [1.5K]

8a) The monthly rainfall is 3.6

8b) Deviation for May is 1
Deviation for June is 2.725
Deviation for July is 0.65

8c) Yes, the average annual rainfall was exceeded by 0.525

Please give me a rating if this helped

5 0

3 years ago

HELP ME PLEASE PLEASE HELP ASAP PLEASE

marin [14]

Answer:

X = $\frac{L}{6\pi r }$ - $\frac{5r}{6}$

Step-by-step explanation:

4 0

4 years ago