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FromTheMoon [43]
3 years ago
12

Helpppppppppppppppplz

Mathematics
2 answers:
slamgirl [31]3 years ago
7 0
370 m mark because the runner is only 2 meters away from that one instead of the 360 meter mark which is 8 meters away
Snowcat [4.5K]3 years ago
7 0

When rounding, if the digit in the one's place is higher than 5, you round up. If it's lower than 5, you round down.

<h3>Answer and explanation:</h3>

She's closer to 370m. Since the runner is at 368m and the digit in the ones place is higher than 5, you have to round up to 370. This means the runner is closer to 370m.

<em>Hope this helps!</em>

~ V

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A researcher measures the correlation between the frequency of self-esteem (high,low)and health status (lean/healthy,overweight/
tresset_1 [31]

Answer: B) 0.28

Step-by-step explanation:

Given that:

Lean/Healthy Overweight/ ObeseSelf Esteem Low 18 32 High 32 18

                Overweight/Obese      Lean/Healthy               Total

Low          32                                   18                                 50

High         18                                    32                                50

Total         50                                   50                               100

the phi correlation coefficient is defined by Ф = √x²/n

where n = 100 ( total number of response )

x² = [(32×32 - 18×18)² × 100] / [50 × 50 × 50 × 50]

Ф = √ [(700)² x 100) / (50)⁴ × 100

Ф = 700 / 50²

Ф = 0.28

Therefore option B) is the correct answer

5 0
3 years ago
Derive the equation of the parabola with a focus at (−2, 4) and a directrix of y = 6. Put the equation in standard form.
zlopas [31]
Sketch a graph so you can find the vertex and determine if the parabola is horizontal or vertical. When i graph (-2,4) and then y=6, I find the middle is (-2,5) so that will be the vertex. The distance to the vertex is -1 so 4p=-4.
My formula is (x-h)^2=4p(y-k), now just plug in numbers. You should end up with (x+2)^2=-4(y-5).
Some instructors want you to write (y-k)=1/(4p)(x-h)^2 which is the same thing, so check to see which one you should be using. 
3 0
4 years ago
The value of a mutual fund increased by 3 1/8%. Write 3 1/8% as a fraction in simplest form. Justify your answer
Sergeeva-Olga [200]
The answer is 81\800
4 0
3 years ago
Read 2 more answers
Determine whether Triangle AWT= UYZ. explain your reasoning ​
BigorU [14]

Answer: The triangles are congruent by the HL theorem

HL = hypotenuse leg

======================================================

Explanation:

Through the segment addition postulate, we can say:

WZ = WT+TZ

YT = TZ+ZY

Notice how both WZ and YT have TZ as part of their segments.

Since WZ and YT are the same length, we can then say,

WZ = YT

WT+TZ = TZ+ZY

WT = ZY

I used substitution for the second step.

The last step is where I subtracted TZ from both sides, and they canceled out.

---------------------

We have the following info:

  1. WT = ZY  (just found)
  2. AT = UZ (given)
  3. angle AWT = angle UYZ (given)

Normally, the conclusion from here would be "not enough info" because this is a SSA case. Note how the angles are not between the congruent sides. So we wouldn't use SAS.

However, despite us having SSA, it doesn't mean we can't keep going. The reason why is because we have two right triangles. So we can use the HL theorem instead. Statement 1 above refers to the L of HL, while statement 2  is the H.

HL = hypotenuse leg

Again, HL only works for right triangles. It's the only time we can use SSA to prove right triangles are congruent; otherwise, SSA is not a valid congruence theorem.

6 0
3 years ago
Emma played two games of miniature golf.Her total score for the two games was 0. Emma’s score in the first game was +3. What was
Rina8888 [55]

Answer:

well, the second score would be -3

Step-by-step explanation:

first game: +3

second game: - 3

Total:  0

3 - 3 = 0

Hope it Helps!

4 0
3 years ago
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