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3 years ago

Triangle PQR has vertices P(-2,8), Q(2, 4), and R(4,6). Which best describes triangle PQR?

Mathematics

2 answers:

shusha [124]3 years ago

7 0

Answer:an isosceles triangle with PQ=QR (option C)

Step-by-step explanation:

klasskru [66]3 years ago

4 0

Answer:

A. a right tringle with PQ ⊥ QR

Step-by-step explanation:

If you plot the points on a graph you'll notice that the triangle formed is not an isosceles triangle and is in fact a right triangle with PQ being perpendicular to QR.

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Emma needs to earn at least $250 a week during her summer break to pay for college. She works two jobs, one at a gas station tha

ANTONII [103]

Answer:

x×25+y×14.5( greater than or equal to symbol)250

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3 years ago

A news agency publishes results of a recent poll. It reports that candidate A leads candidate B by 10% because 45% of the poll p

natali 33 [55]

We need to use the formula to find Margin of Error but through the sample proportion, that is

$E=z*\sqrt{\frac{\hat{p}(1-\hat{p})}{n}}$

We will use a 95% confidence interval, that is a z value of 1.96 (Search in a Normal distribution table)

A) For A our $\hat{p}$ (proportion) is equal to 0.45. So applying the formula,

$E=1.96*\sqrt{\frac{0.45(1-0.45)}{900}}$

$E=3.25\%$

B) We make the same of point A, but change our proportion to 0.35

$E=1.96*\sqrt{\frac{0.35(1-0.35)}{900}}$

$E=3.116\%$

c) We need to calculate the SE through proportion for 0.1, that is

$SE = \sqrt{(\frac{\hat{p_1}(1-\hat{p_1})}{n})+(\frac{\hat{p_2}(1-\hat{p_2})}{n})}$

Then our Error is given by,

$E=z*SE$

$E=1.96*\sqrt(0.45*\frac{0.55}{900}+0.35\frac{0.65}{900}$

$E=0.045$

7 0

3 years ago

a team of runners needs to run a 1/4 mile relay race. if each runner must run 1/16 mile, how many runners are needed

ale4655 [162]

Since 1/4 = 4/16, if each runner would be running 1/16 of a mile, you would need 4 runners to run the race.

7 0

3 years ago

6x+10=30x+135 solve for "x"

Bezzdna [24]

Answer:

x=-125/24

Step-by-step explanation:

(6x+10)+(-10-30x)=(30x+135)+(-10-30x)

(6x+10)+(-30x-10)=(30x+135)+(-30x-10)

6x+10-30x-10=30x+135-30x-10

6x-30x+10-10=30x-30x+135-10

-24x=125

24x/24=-125/24

x=-125/24

5 0

2 years ago

The ratio of Dina’s bathing suits to Yana’s bathing suits was 4:1. if Dina has 24 more bathing suits than Yana, how many bathing

lina2011 [118]

Answer: Yana has 8 bathing suits.

Step-by-step explanation: Given that the ratio of Dina’s bathing suits to Yana’s bathing suits was 4 : 1 and Dina has 24 more bathing suits than Yana.

We are to find the number of bathing suits that Yana has.

Let 4x and x represents the number of bathing suits that Dina and Yana have respectively.

Then, according to the given information, we have

$4x-x=24\\\\\Rightarrow 3x=24\\\\\Rightarrow x=\dfrac{24}{3}\\\\\Rightarrow x=8.$

Therefore, the number of bathing suits that Yana has is given by

$x=8.$

Thus, Yana has 8 bathing suits.

5 0

4 years ago