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Citrus2011 [14]
3 years ago
15

I really need help with this!!!!!!! 2x=26 2x=26

Mathematics
2 answers:
crimeas [40]3 years ago
7 0
Shdjdbdhbdnnkkdjdkdjdjdjdud

OLga [1]3 years ago
3 0

Step-by-step explanation:

2x = 26 \\  \frac{2x}{2}   =  \frac{26}{2}  \\ x = 13

hope this helpful

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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
Im to tierd to post this
Colt1911 [192]

Answer:

keep trying until you succeed :)

Step-by-step explanation:

7 0
3 years ago
Chad washes windows after school to make some extra money. He charges $5.50 to wash each window. If the customer provides the su
Fynjy0 [20]
The second option. The 5.5w part shows that its $5.50 times each window. The -3.25 is because he deducted 3.25 from the total. And then you have the price that he got on the other side. 

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5.5w-3.25=35.25
5.5w=38.50
w=7
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3 0
3 years ago
Read 2 more answers
Carla sells hot coffee, cider and tea from a sidewalk cart near wall street in new york city. last month she sold $4,500 worth o
Andre45 [30]
Carla's fixed cot will be given by:
Cost=(cost of beverages)+(salaries)+(utilities)+(rent)
cost=800+2000+100+600
cost=$3500
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6 0
3 years ago
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Andreas dad is 57 k heavier than andre. Andrea weighs 34 k.
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A  Andreas dad weighs 91 k.
B Andrea and her dad both weigh 91 k.
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3 years ago
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