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Alex777 [14]
3 years ago
10

Solve the proportion. 8/7 = 168/x A. x = 1176 B. x = 49 C. x = 0 D. x = 147

Mathematics
2 answers:
Virty [35]3 years ago
7 0

Answer:

OPTION D

Step-by-step explanation:

\frac{8}{7} =\frac{168}{X}\\8=\frac{168*7}{X} \\\\X=\frac{168*7}{8} \\X=147

Basile [38]3 years ago
4 0
147 because 8 x 21 =168 which means you have to multiply 7 by 21 which equals 147
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Answer: 90% of the time.

Step-by-step explanation: This is because you can add the two different times and the standard time of 75 seconds, divide it all by 3 leaving you with 75.2 and that is 0.2 away from the original between those times all together. Take that 0.2 and subtract it from the 1.1 deviation and you’ll get 0.9 times that by 100 and you get it in a percentage; 90%.

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4 years ago
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kari74 [83]

Answer:

(a) x=5

(b) x= -1 1/3

(c) x= 1

Step-by-step explanation:

(a)                       (b)                        (c)

2(x-3)=4           −3(2x+1)=5          a(bx+c)=d

x−3=4/2           2x+1= −  5/3          d^1−1

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x=2+3                 2x= -5-3/3           x=1

x=5                    2x= -8/3*2

                          x= -8/6

                          x= -4/3

                         

8 0
3 years ago
Please help if you can
White raven [17]

Answer:

Lets solve it

4x-3 <5

4x<5+3

4x<8

x<8/4

x<2

So yes, two is a solution

Step-by-step explanation:

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3 years ago
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Answer:

(24,4,84)

Step-by-step explanation:

Since they restricted our domains to certain x values, we can find the range by plugging in the x values to find it y value or output.

f( - 2) = 5( { - 2}^{2} ) + 4

5(4) + 4 = 24

f(0) =  - 5( {0}^{2} ) + 4 = 4

5(4) {}^{2}  + 4 = 84

So our range is (24,4,84)

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