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3 years ago

I know this stuff but D is hard

Mathematics

2 answers:

iragen [17]3 years ago

5 0

Answer:

Rhombus

Step-by-step explanation:

4 units from Y-axis means 4 units to the left and 3 units from X-axis means 3 units up.

Vinvika [58]3 years ago

4 0

Answer:

its a Diamond which is also called a Rhombus

Step-by-step explanation:

when it is saying 4 units from the Y-axis it means 4 away so that means X-axis is 3 and Y-axis is 4

bc when it say 3 from the x-axis it really three away so it goes up 3

coordinates= (3,4)

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Find the roots of h(t) = (139kt)^2 − 69t + 80

Sonbull [250]

Answer:

The positive value of $k$ will result in exactly one real root is approximately 0.028.

Step-by-step explanation:

Let $h(t) = 19321\cdot k^{2}\cdot t^{2}-69\cdot t +80$ , roots are those values of $t$ so that $h(t) = 0$ . That is:

$19321\cdot k^{2}\cdot t^{2}-69\cdot t + 80=0$ (1)

Roots are determined analytically by the Quadratic Formula:

$t = \frac{69\pm \sqrt{4761-6182720\cdot k^{2} }}{38642}$

$t = \frac{69}{38642} \pm \sqrt{\frac{4761}{1493204164}-\frac{80\cdot k^{2}}{19321} }$

The smaller root is $t = \frac{69}{38642} - \sqrt{\frac{4761}{1493204164}-\frac{80\cdot k^{2}}{19321} }$ , and the larger root is $t = \frac{69}{38642} + \sqrt{\frac{4761}{1493204164}-\frac{80\cdot k^{2}}{19321} }$ .

$h(t) = 19321\cdot k^{2}\cdot t^{2}-69\cdot t +80$ has one real root when $\frac{4761}{1493204164}-\frac{80\cdot k^{2}}{19321} = 0$ . Then, we solve the discriminant for $k$ :

$\frac{80\cdot k^{2}}{19321} = \frac{4761}{1493204164}$

$k \approx \pm 0.028$

The positive value of $k$ will result in exactly one real root is approximately 0.028.

7 0

2 years ago

A store pays $24 for a jewelry box and marks the price up by 20%. What is the amount of

Ratling [72]

Answer:

$4.8

Step-by-step explanation:

$24×20/100=$4.8

7 0

2 years ago

An exponential function f(x) = ab^xpasses through the points (0, 2) and (3, 54). What are the values of a and

Vsevolod [243]

Answers:

a = 2

b = 3

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

Explanation:

Plug in x = 0 and y = 2 to find that

y = a*b^x

2 = a*b^0

2 = a*1

2 = a

a = 2

Then plug in x = 3 and y = 54 to determine the value of b

y = a*b^x

y = 2*b^x

54 = 2*b^3

2b^3 = 54

b^3 = 54/2

b^3 = 27

b = (27)^(1/3)

b = 3

So we have y = a*b^x update to y = 2*3^x

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2 years ago

the radio of girls to boys in the junior high band is 5 to 7. At the beginning of the year, there were 72 students in the band.

ANTONII [103]

I don't really understand this question do u have a pic

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2 years ago

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Mazyrski [523]

Answer:

idk let me go look at it

Step-by-step explanation:

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2 years ago

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