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ikadub [295]
4 years ago
10

LOT 30

Mathematics
1 answer:
garik1379 [7]4 years ago
6 0
Uhm this is kinda confusing ?
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How to solve 5x(2-7x)?
Svetach [21]
<span><span> x = 7/5 = 1.400
</span><span> x = 0 </span></span>
5 0
3 years ago
Can some one help me please
krok68 [10]
16 feet= 192 inches
24 yards= 72 feet
15 feet= 5 yards
5 0
4 years ago
in a certain county, the number of charter schools is 4 less than twice the number of alternative schools. We know that there ar
Minchanka [31]

Answer:

There are 26 alternative schools in the country

Step-by-step explanation:

Let

x------> the number of charter schools

y----->  the number of alternative schools

we know that

x=48

x=2y-4 -----> equation A

substitute the value of x in the equation A and solve for y

48=2y-4

2y=48+4

2y=52

y=26

5 0
3 years ago
Write an equation that models the sequence 400, 200, 100, 50, ...
grandymaker [24]
The sequence is probably ×2
4 0
3 years ago
How do you solve (7^-1)^-1 and 5^2 * 5^4 * 5^-3
Katyanochek1 [597]

Answer:

Step-by-step explanation:

exponents raised to a - power  is an inverse function probably not the right word

       a^-b    =  1/(a^b)     example       4^-2   = 1/(4^2)     =  1/16

so   (7^-1)^-1  is a double inverse which is back to the original number  7

      inverted 7 twice

      (7^-1)^-1     = (1/7)^-1     =  1/(1/7)     =   7     trust me or use your calculator

since the coeffients are the same  just add the powers...  some exponent rule

     5^2 * 5^4 * 5^-3   = 5^(2+4-3)   = 5³

here is it written out

5^2 * 5^4 * 5^-3    = 5²  ×   5^4   ×  5^-3    =   (5×5) × (5×5×5×5)  × (1/5×1/5×1/5)

    5×5 × 5× (5×5×5  × 1/5×1/5×1/5)           (5×5×5  × 1/5×1/5×1/5)  = 1

    5×5×5    = 5³

   so

7 0
3 years ago
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