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DENIUS [597]
3 years ago
6

(2x -5) - 1.75(x+4) simplify

Mathematics
2 answers:
Strike441 [17]3 years ago
8 0

Step-by-step explanation:

=0.25x-12 I hope this helped:)

ASHA 777 [7]3 years ago
7 0

Answer:

0.25x−12

Step-by-step explanation:

(2x−5)−1.75(x+4)

Use the distributive property to multiply −1.75 by x+4.

2x−5−1.75x−7

Combine 2x and −1.75x to get 0.25x.

0.25x−5−7

Subtract 7 from −5 to get −12.

0.25x−12

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A person is 6 feet tall and his shadow is 10 feet if a trees shadow is 25 feet long how big is the tree
Sidana [21]

Answer:

The tree is 15 feet tall

Step-by-step explanation:

6 feet tall - 10 feet shadow

x feet tall - 25 feet shadow

x=(25*6)/10=15 feet

6 0
3 years ago
A person who is 5 feet tall is standing 108 feet from the base of a tree, and the tree casts a 120 foot shadow. The persons shad
slega [8]

Answer:

50ft

Step-by-step explanation:

let x=height of tree.

AB/DE = BC/EC

The ratio is == x/5 =120/12

x/5 = 10

x = 50

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4 0
3 years ago
A cylinder with a radius of 1 cm and a height of 21 cm has the same volume as a cone with a height of 7 cm. What is the radius o
Natasha_Volkova [10]

Answer:

<h2>A) 3 cm</h2>

Step-by-step explanation:

The formula of a volume of a cylinder:

V=\pi r^2H

r - radius

H - height

We have r = 1cm and H = 21cm. Substitute:

V=\pi(1^2)(21)=21\pi\ cm^3

The formula of a cone:

V=\dfrac{1}{3}\pi r^2H

r - radius

H - height

We have V = 21π cm³ and H = 7cm. Substitute:

\dfrac{1}{3}\pi(r^2)(7)=21\pi        <em>divide both sides by π</em>

\dfrac{1}{3}(7)(r^2)=21         <em>divide both sides by 7</em>

\dfrac{1}{3}r^2=3         <em>multiply both sides by 3</em>

r^2=9\to r=\sqrt9\\\\r=3\ cm

5 0
2 years ago
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Sloan [31]

Answer: Answer C

Step-by-step explanation:

12%___780 votes

100%___X= 6500 votes

(100*780)/12 = 6500

5 0
3 years ago
Is 24/40 equal to four over five a true proportion
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