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3 years ago

The length of a rectangle is shown below:

Mathematics

2 answers:

kicyunya [14]3 years ago

8 0

Answer:

b mark me brainliest

Step-by-step explanation:

KIM [24]3 years ago

5 0

Answer: It would be C(-3 -1) D(1 -1). (Aka the second one)

Step-by-step explanation:

The top of A and B is 4 units. If you count down five units vertically you get to -3, -1 and 1, -1. You need to count down 5 units because its asking you to get 20. So 5 x 4 = 20.

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True or False: A race car driver tested his car for time from 0 to 60 mph, and for 20 tests obtained a mean of 4.85 seconds with

sattari [20]

Answer:

The given statement is false.

Step-by-step explanation:

We are given the following in the question:

95% confidence interval: (4.53,5.18)

Sample mean, $\bar{x}$ = 4.85 seconds

Sample size, n = 20

Alpha, α = 0.05

Sample standard deviation, σ = 1.47 seconds

Degree of freedom = n - 1 = 19

95% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 4 and}~\alpha_{0.01} = \pm 2.09$

$4.85 \pm 2.09(\dfrac{ 1.47}{\sqrt{20}} )\\\\ = 4.85 \pm 0.69 \\\\= (4.16 ,5.54)$

Thus, the calculated confidence interval is different from the given confidence interval.

Hence, the given statement is false.

6 0

4 years ago

Rationalize 2 / 2√2

horsena [70]

Answer:

$\frac{\sqrt{2} }{2}$

Step-by-step explanation:

$\frac{2}{2\sqrt{2} }$ * $\frac{2\sqrt{2} }{2\sqrt{2} }$ = $\frac{4\sqrt{2} }{8}$ = $\frac{\sqrt{2} }{2}$

6 0

4 years ago

A boy of mass 8000g climbed a tree of height 5.5 m calculate a.the weight of the boy. b.the work done by the boy

katrin [286]

Answer:

put it in pounds then i can help

Step-by-step explanation:

8 0

3 years ago

Use long division to divide and use the result to factor the dividend completely.

dolphi86 [110]

The answer is:
Factor the expression

3 0

3 years ago

5 COINS AND CROWNNNNNN PLEASEEEEE FIND X AND Y, I NEED THIS SO BAD PLEASE SHOW WORK, I WILL GIVE BRAINLEST

borishaifa [10]

Answer: change 9x and 5x

Step-by-step explanation:

8 0

3 years ago