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Mrrafil [7]
3 years ago
15

HELP ME SOLVE THUS PLEASE! 50 POINTS WILL BE REWARDED!!!!

Mathematics
2 answers:
german3 years ago
6 0

\huge \boxed{\mathbb{QUESTION} \downarrow}

\tt\frac { 2 ( x - 1 ) } { 4 } = \frac { 2 ( x + 8 ) } { 13 } \\

\large \boxed{\mathbb{ANSWER\: WITH\: EXPLANATION} \downarrow}

\tt\frac { 2 ( x - 1 ) } { 4 } = \frac { 2 ( x + 8 ) } { 13 } \\

Cross multiply the equations on both sides.

\tt13\times 2\left(x-1\right)=4\times 2\left(x+8\right)

Multiply 13 and 2 to get 26.

\tt26\left(x-1\right)=4\times 2\left(x+8\right)

Use the distributive property to multiply 26 by x-1.

\tt26x-26=4\times 2\left(x+8\right)

Multiply 4 and 2 to get 8.

\tt \: 26x-26=8\left(x+8\right)

Use the distributive property to multiply 8 by x+8.

\tt \: 26x-26=8x+64

Subtract 8x from both sides.

\tt \: 26x-26-8x=64

Combine 26x and -8x to get 18x.

\tt \: 18x-26=64

Add 26 to both sides.

\tt \: 18x=64+26

Add 64 and 26 to get 90.

\tt \: 18x=90

Divide both sides by 18.

\tt \: x=\frac{90}{18}  \\

Divide 90 by 18 to get 5.

\boxed{ \boxed{ \bf \: x=5 }}

dsp733 years ago
3 0

Answer:

x=5

Step-by-step explanation:

2(x−1)/4=2(x+8)/13

Step 1: Cross-multiply:

2(x−1)*(13)=2(x+8)*(4)

26x−26=8x+64

Step 2: Subtract 8x from both sides.

26x−26−8x=8x+64−8x

18x−26=64

Step 3: Add 26 to both sides.

18x−26+26=64+26

18x=90

Step 4: Divide both sides by 18.

18x/18= 90/18

x=5

~Hope this helps~

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Write an explicit equation for sequence:<br><br>t(1)=486; t(n+1)=1/3 x t(n)
Ahat [919]

Answer:

The answer is 8 2/3.

Step-by-step explanation:

If I'm wrong, just tell me. I just joined Brainly yesterday.

5 0
3 years ago
The length of a rectangular prism is 8
Lena [83]
Surface area is:

W=width
L=length
H=height

S=2*(L*W+L*H+W*H)

replacing the values

250=2*(8*W+8*1+W*1)

250=2*(8*W+8+W)

250=2*(9*W+8)

dived each member by 2

125=9W+8

9W=125-8

9W=117

\boxed{\boxed{W=13~unit~of~measure}}

The volume of a rectangular prism is

V=L*H*W

V=8*1*13

\boxed{\boxed{V=104~unit~of~volume}}
3 0
4 years ago
Susan needs to buy apples and oranges to make fruit salad. She needs 15 fruits in all. Apples cost $3 per piece, and oranges cos
jonny [76]

Answer:

m + 30 ; $36

Step-by-step explanation:

Given that:

Total fruits needed = 15

Fruits needed :

Apple (m) ; cost = $3 per piece

Oranges (o) ; cost = $2 per piece

Amount spent on fruits :

[(cost of apple * number of apples) + (cost of orange *(total fruits - number of apples)]

3m + 2(15 - m)

3m + 30 - 2m

3m - 2m + 30

m + 30

Amount spent if 6 apples is purchased :

m = 6

m + 30

6 + 30 = $36

8 0
3 years ago
Philip shoots an arrow from the top of a hill into the ground. the flight of the arrow can be modeled with the quadratic functio
Sati [7]

Answer:

(a)Time taken to reach the ground, x=6 seconds

(b)Maximum height of the arrow during its flight =101.25 feet

Step-by-step explanation:

Given the quadratic function which models the flight of the arrow:

y=-5x^2+15x+90

Where:

  • y represents the vertical height of the arrow, in meters; and
  • x represents the time, in seconds.

(a)Positive Zero

-5x^2+15x+90=0\\-5(x^2-3x-18)=0\\-5(x^2-6x+3x-18)=0\\-5(x(x-6)+3(x-6))=0\\-5(x+3)(x-6)=0\\x+3=0\:or\:x-6=0\\x=-3,x=6

In 6 seconds, the arrow will hit the horizontal plane, i.e. the ground.

(b)

y=-5x^2+15x+90\\y-90=-5(x^2-3x)\\y-90-5(\frac{9}{4}) =-5(x^2-3x+(\frac{3}{2} )^2)\\y-101.25=-5(x-\frac{3}{2} )^2\\y=-5(x-\frac{3}{2} )^2+101.25

Comparing with the vertex form:

y=a(x-h)^2+k

Our vertex, (h,k)=(1.5, 101.25)

Maximum Value of y=101.25

The maximum value of y represents the maximum height of the arrow during its flight, which is 101.25 feet.

3 0
4 years ago
-
Alex
Slope(m) = -2 hope this helps
8 0
3 years ago
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