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Alenkinab [10]
3 years ago
11

Find the missing values in the ratio table. Then write the equivalent ratios. Write each value as a fraction or whole number. Wh

at are the ratios for each column?

Mathematics
1 answer:
PIT_PIT [208]3 years ago
5 0

Answer:

Miles, missing number: 13

Hours, missing number: 1/25 ?

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REY [17]

Answer:

i beliveyou can watch it on 9anime.to but use an addblocker please there is so many ads without it

Step-by-step explanation:

8 0
3 years ago
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Martin and Alexia are rock climbing each person's rate stays the same for the first hour they climb mountain climbers 3 1/3 mete
Minchanka [31]

1. If Martin climbs 3 1/3 meters in the first one 1/6 hour, then he climbs

3\dfrac{1}{3}\cdot 6=\dfrac{10}{3}\cdot 6=20 meters per hour. Then, option A is correct and options C and E are false.

2. If Alexia climbs 17 1/2 in the first 5/6 hour, then she climbs

17\dfrac{1}{2}\cdot \dfrac{6}{5}=\dfrac{35}{2}\cdot \dfrac{6}{5}=21 meters per hour and it takes Alexia \dfrac{1}{21} of an hour to climb 1 meter. Then options B and D are correct and option F is false.

Answer: correct options are A, B and D.

7 0
3 years ago
at a bargain store, Tanya bought 4 items that each cost the same amount. Tony bought 5 items that each cost the same amount, but
lesantik [10]

3x=4x-9

x=9

x-2.25=6.75

Tanya spent $9 on each item; Tony spent $6.75 on each of his items.

3 0
3 years ago
Given the function f(x)=3x+5a / x^2-a^2 find the value of a for which f'(12) = 0
maria [59]
The function, as presented here, is ambiguous in terms of what's being deivded by what.  For the sake of example, I will assume that you meant

           3x+5a
<span> f(x)= ------------
</span>          x^2-a^2

You are saying that the derivative of this function is 0 when x=12.  Let's differentiate f(x) with respect to x and then let x = 12:

             (x^2-a^2)(3) -(3x+5a)(2x)
f '(x) = ------------------------------------- = 0 when x = 12
                [x^2-a^2]^2

(144-a^2)(3) - (36+5a)(24)
------------------------------------  =  0
               [   ]^2

Simplifying,

(144-a^2) - 8(36+5a) = 0

144 - a^2 - 288 - 40a = 0

This can be rewritten as a quadratic in standard form:

-a^2 - 40a - 144 = 0, or a^2 + 40a + 144 = 0.

Solve for a by completing the square:

a^2 + 40a + 20^2 - 20^2 + 144 = 0
        (a+20)^2    = 400 - 144 = 156

        Then a+20 = sqrt[6(26)] = sqrt[6(2)(13)] = 4(3)(13)= 2sqrt(39)

         Finally, a = -20 plus or minus 2sqrt(39)

You must check both answers by subst. into the original equation.  Only if the result(s) is(are) true is your solution (value of a) correct.
6 0
3 years ago
What are the solutions of this quadratic equation?<br> x + 2x=-2
natta225 [31]

Answer:

2x=2

Step-by-step explanation:

easy

5 0
2 years ago
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