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Vera_Pavlovna [14]
3 years ago
5

Two cars start from towns 800800 mi apart and travel toward each other. They meet after 88 hr. Find the speed of each car if one

travels 1010 mph faster than the other.
Mathematics
1 answer:
saul85 [17]3 years ago
8 0
Oh mah god this seems hard

i will try to figure it out for u 


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a triangle has coordinates a(-1,-2) b(-4,-2) and c(-4,-5) what are the coordinates of a' the image of point a under a dilation w
quester [9]

9514 1404 393

Answer:

  (-3, -6)

Step-by-step explanation:

The scale factor multiplies each coordinate.

  A' = 3A = 3(-1, -2) = (-3, -6)

The image of A is ...

  A'(-3, -6)

8 0
3 years ago
If cos θ = 5/13, use the Pythagorean Identity to find sin θ.
emmainna [20.7K]
Sin θ=sqrt(1-<span>cos^2 θ)
</span>sin θ=sqrt[1-(5/13)^2]
sin θ=sqrt[1-(5)^2/(13)^2]
sin θ=sqrt[1-25/169]
sin θ=sqrt[(169-25)/169]
sin θ=sqrt(144/169)
sin θ=sqrt(144)/sqrt(169)
sin θ=12/13

Answer: Second option 12/13
6 0
3 years ago
I only have 10 minutes left!! I need to know the answer!!! <br> I WILL MARL BRAINLY
Advocard [28]

Answer:

x<1

Step-by-step explanation:

4 0
3 years ago
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Built around 2600 BCE, the Great Pyramid of Giza in Egypt is 485 ft high (due to erosion, its current height is slightly less) a
Morgarella [4.7K]

Answer:1.69*10^12 J

Step-by-step explanation:

From figure above, using triangle ratio

485/755.5=y/l. Cross multiplying 485l=755.5y Divide via 485) hence l= 755.5y/485

Consider a slice volume Vslice= (755.5y/485)^2∆y; recall density =150lb/ft^3

Force slice = 150*755.5^2.y^2.∆y/485^2

From figure 2 in the attachment work done for elementary sclice

Wslice= 150.755.5^2.y^2.∆y.(485-y)/485^2

= (150*755.5^2*y^2)(485-y)∆y/485

To calculate the total work we integrate from y=0 to y= 485

Ie W=[ integral of 150*755.5^2 *y^2(485-y)dy/485] at y=0 and y= 485

Integrating the above

W= 150*755.5^2/485[485*y^3/3-y^4/4] at y= 0 and y=485

W= 150*755.5^2/485(485*485^3/3-484^4/4)-(485.0^3/3-0^4/4)

Work done 1.69*10^12joules

7 0
3 years ago
Simplify 12 + 16 ÷ 4 · 5 - 8​
elena55 [62]

Step-by-step explanation:

12 + 16 ÷ 4 × 5 - 8

12 + 4 × 5 - 8

12 + 20 - 8

32 - 8

24

7 0
2 years ago
Read 2 more answers
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