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AleksAgata [21]
3 years ago
12

Help me with this i need this for a test everything i need is in the picture

Mathematics
1 answer:
Over [174]3 years ago
3 0

Answer:

I can not see a picture im sorry

Step-by-step explanation:

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A regular polygon of (2A+ 1) sides has 140°<br>as the size of each<br> interior angle. Find A​
Irina18 [472]

Answer:

Ext angles = 40 degs 360/40 = 9 sides

Step-by-step explanation:

4 0
3 years ago
Suppose a long jumper claims that her jump distance is less than 16 feet, on average. Several of her teammates do not believe he
Greeley [361]

Answer:

Claim : Jump distance is less than 16 feet.

A ) H_0:\mu \geq16\\H_a: \mu

n = 19

Since n <30 we will use t test

The mean distance of the sample jumps is 13.2 feet. i.e. x = 13.2 feet

The standard deviation of her jump distance is 1.5 ft i.e. s = 1.5

Formula : t =\frac{x-\mu}{\frac{s}{\sqrt{n}}}

Substitute the values:

B) t =\frac{13.2-16}{\frac{1.5}{\sqrt{19}}}

t =−8.136

degree of freedom df = n-1 = 19-1 = 18

\alpha = 0.1

t_{(\frac{\alpha}{2},df)}=1.73

t critical > t statistics

So, we accept the null hypothesis

C) So, the claim is wrong that ump distance is less than 16 feet.

Hence long jump distance must be greater than or equal to 16

5 0
3 years ago
Which of the equations below could be the equation of this parabola?
BARSIC [14]

Parabolas like y=ax^2 have the y-axis as their symmetry axis, so options B and D are surely wrong.

Moreover, parabolas like x=ay^2 have the x-axis as their symmetry axis. If a>0 the parabola is concave rightwards, if a the parabola is concave leftwards.

Since your parabola is concave leftwards, the only feasible option is x=-2y^2

7 0
3 years ago
Complete a b and c if you do one it would mean alot
victus00 [196]

Answer: I don't see what your talking about here, so I can't help you.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
A bicyclist travels at a constant speed of 12 miles per hour for a total of 45 minutes. Use set notations for the domain and ran
Mama L [17]

A bicyclist travels at a constant speed of 12 miles per hour for a total of 45 minutes

Domain x is number of hours

Range y is distance traveled

speed = 12 miles per hour

time = 45 minutes = \frac{45}{60} = 0.75 hours

We know distance formula

Distance = speed * time

Distance = 12 * 0.75= 9 miles

Number of hours x is 0 to 0.75 hours

So domain is { x | 0}

Distance is 0 to 9 miles

So range is { x | 0}

5 0
4 years ago
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