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3 years ago

Consider the system of equations.

Mathematics

2 answers:

ivanzaharov [21]3 years ago

4 0

Answer:

Yall its d

Step-by-step explanation:

Because the x value represents the domain which is 1 and the y value represents the range which is 2

oksian1 [2.3K]3 years ago

3 0

Answer:

b. if dont d cuz I did this one but I kinda forgot

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ser-zykov [4K]

Answer:

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Step-by-step explanation:

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3 years ago

Quadrilateral FGHJ is dilated according to the rule DO,(x,y) to create the image quadrilateral F'G'H'J', which is not shown. Wha

Simora [160]

Answer: it’s -2,-4

Step-by-step explanation: since the dilation rule is 2/3 we take 2/3 of all the numbers. For example we took two thirds of -3 to get -2.

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3 years ago

Use compatible numbers to find two estimates 73÷4,858

zvonat [6]

Compatible numbers to find two estimates 73÷4,858

70÷4,850 = 0.014
You sure it's not 4,858÷73
4,850÷70 =

______ _____ 69 2/7
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4 years ago

What's 95% of 85 do not round your answer

TEA [102]

80.75 my dude

(85/100)*95

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3 years ago

Read 2 more answers

A street light is at the top of a 25 ft pole. A 4 ft tall girl walks along a straight path away from the pole with a speed of 6

Burka [1]

Answer:

Tip of the shadow of the girl is moving with a rate of 7.14 feet per sec.

Step-by-step explanation:

Given : In the figure attached, Length of girl EC = 4 ft

Length of street light AB = 25 ft

Girl is moving away from the light with a speed = 6 ft per sec.

To Find : Rate ( $\frac{dw}{dt}$ ) of the tip (D) of the girl's shadow (BD) moving away from th

light.

Solution : Let the distance of the girl from the street light is = x feet

Length of the shadow CD is = y feet

Therefore, $\frac{dx}{dt}=6$ feet per sec. [Given]

In the figure attached, ΔAFE and ΔADE are similar.

By the property of similar triangles,

$\frac{x}{21}=\frac{x+y}{25}$

25x = 21(x + y)

25x = 21x + 21y

25x - 21x = 21y

4x = 21y

y = $\frac{4x}{21}$

Now we take the derivative on both the sides,

$\frac{dy}{dt}=\frac{4}{21}\times \frac{dx}{dt}$

= $\frac{4}{21}\times 6$

= $\frac{8}{7}$

≈ 1.14 ft per sec.

Since w = x + y

Therefore, $\frac{dw}{dt}= \frac{dx}{dt}+\frac{dy}{dt}$

$\frac{dw}{dt}=6+1.14$

= 7.14 ft per sec.

Therefore, tip of the shadow of the girl is moving with a rate of 7.14 feet per sec.

3 0

3 years ago