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2 years ago

Hello please help prize is brainliest

Mathematics

2 answers:

Sauron [17]2 years ago

8 0

Answer:

The lowest recorded temperature are 80, 83, 84, 85. There are eleven day that it was higher than 82 but less than 90. There are nine days that the temperature was equal to or greater than.

Step-by-step explanation:

Mark brainliest if i'm right

e-lub [12.9K]2 years ago

7 0

4. 82 and 99

5,..................11

6,non....

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Please help me solve this

MArishka [77]

9514 1404 393

Answer:

sin(θ) ≈ -0.92

cos(θ) ≈ 0.38

tan(θ) = -2.40

Step-by-step explanation:

Let r represent the distance of the point from the origin. The Pythagorean theorem tells us ...

r² = (5)² + (-12)²

r² = 169

r = √169 = 13

The trig relations for a point on the terminal ray are ...

(x, y) = (r·cos(θ), r·sin(θ))

Then ...

sin(θ) = y/r = -12/13 ≈ -0.92

cos(θ) = x/r = 5/13 ≈ 0.38

tan(θ) = y/x = -12/5 = -2.40

7 0

2 years ago

If you toss a coin 4 times, what is the probability of landing heads, heads, tails, heads and then heads?

storchak [24]

50 percent chance for either one

7 0

3 years ago

Read 2 more answers

Seven students cut 5 and three-fourths inches of thread from a spool for a school project. What number represents the change in

dalvyx [7]

Answer:

-40 1/4

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

How much will it cost to carpet a rectangular room measuring 13.4 m by 24 m if carpeting costs $24.99 per square meter?

brilliants [131]

Answer:

$8036.784

Step-by-step explanation:

It is easy

The area of carpet is 13.4×24=321.6sq meter

Now, for 1 sq. meter the cost is $24.99

So for 321.6sq.meters, 321.6×24.99

=$8036.784

6 0

3 years ago

7 . Sampling distribution of the difference between two means A statistician is interested in the effectiveness of a weight-loss

UkoKoshka [18]

Answer:

0.229

Step-by-step explanation:

Given that the difference between the two sample means follows anormal distribution with a mean of11.00 and standard deviation equal to1.4387

A statistician is interested in the effectiveness of a weight-loss supplement. She randomly selects two independent samples. Individuals in the first sample of size n1 = 24 take the weight-loss supplement. Individuals in the second sample of size n2 = 21 take a placebo. Individuals in both samples follow identical exercise and diet programs. At the end of the study, the statistician measures the weight loss (in percent) of each participant.

We find that mean difference actual = 13-2 = 11

Probability that difference >12 =P(Z> $\frac{12-11}{1.3487} \\$ )

=P(Z>0.742)=.0.229

3 0

2 years ago