3 years ago

Anyone know this answer Help ASAP

Mathematics

1 answer:

Anton [14]3 years ago

6 0

Answer:

The right answer is A (x=2,y=-1)

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A parabola has a vertex at (0,0). The focus of the parabola is located on the positive y-axis.

BabaBlast [244]

The parabola opens in the direction of the focus.

Since the focus is above the vertex, it opens up.

4 0

4 years ago

Read 2 more answers

Rearrange w=3(2a+b)-4 can u please make a the subject of the formulae

lys-0071 [83]

I'll try to do each individual step, hopefully that'll clear it up
w= 3(2a+b)-4
w+4= 3(2a+b)
(w+4)/3 = 2a+ b
2a= ((w+4)/3) - b
a= (((w+4)/3) - b)/ 2

3 0

4 years ago

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Use the diagram to answer, given that line LM is a common tangent to circle P and circle Q. Leave answers in simplified radical

drek231 [11]

Answer:

PL = 9

PN = 5√5

Step-by-step explanation:

8/12 = 6/PL

8PL = 72

PL = 9

PN² = 10² + 5² = 100 + 25 = 125

PN = √125 = 5√5

7 0

3 years ago

Use the given data to find the 95% confidence interval estimate of the population mean μ. Assume that the population has a norma

loris [4]

Answer: For 95% Confidence Interval:

Upper Limit = 110.2

Lower Limit = 97.8

95% Confidence Interval = [97.8, 110.2]

Step-by-step explanation:

Given that,

Mean(M) = 104

Standard Deviation(SD) = 10

Sample Size(n) = 10

Formula for calculating 95% Confidence Interval are as follows:

Standard error(SE) = $\frac{SD}{\sqrt{n} }$

= $\frac{10}{\sqrt{10} }$

= 3.164

⇒ M ± $Z_{0.95}$ × SE

= 104 ± (1.96)(3.164)

= 104 ± 6.20

∴ Upper Limit = 104 + 6.20 = 110.2

Lower Limit = 104 - 6.20 = 97.8

So,

95% Confidence Interval = [97.8, 110.2]

6 0

3 years ago

Please see the screenshot.

sesenic [268]

Answer:

the answer is c, (-10,4) and the radius is 10

Step-by-step explanation:

Hope this helps!❆

6 0

3 years ago