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n200080 [17]
3 years ago
8

I need help. Find X and Y

Mathematics
1 answer:
Jlenok [28]3 years ago
7 0

Answer:

Y is 2 and x is 1

Step-by-step explanation:

If you subtract 3 and 1 you will get 2 so that is y and for x you do the same thing but backwards

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What quantity of a 50% acid solution must be mixed with a 20% solution to produce 600 mL of a 45% solution?
Naddika [18.5K]

Answer:

400 mL

Step-by-step explanation:

0.50x + 0.20(600-x) = 0.40*600

50x + 20*600 - 20x = 40*600

30x = 20*600

x = 20*20

x = 400 mL

4 0
3 years ago
Write 9/10 as an equivalent fraction with a denominator of 100 then write the fraction as a decimal
Firlakuza [10]

Answer:

Since the denominator has to be 100 and 9/10, 0.90, and 90% are all equal the you would just need to make the 9 into a 90.  Therefore, yout answer will be 90/100.

5 0
2 years ago
Ivan and Tanya share £150 in the ratio 4: 1<br>Work out how much more Ivan gets compared to Tanya.​
Anastasy [175]

Answer:

Ivan got £90 more than Tanya.

Step-by-step explanation:

Ivan and Tanya share the amount £150 in the ratio of 4 : 1

Amount received by Ivan = 150\times \frac{4}{(4+1)}

                                          = 150\times \frac{4}{5}

                                          = £120

Similarly, amount received by Tanya = 150\times \frac{1}{(4+1)}

                                                             = £30

Difference in their amounts = 120 - 30

                                              = £90

Therefore, Ivan got £90 more than Tanya.                                                                                                        

7 0
2 years ago
Determine the rational zeros for the function f(x)=x^3+7x^2+7x-15
alexandr402 [8]

Answer:

1,-3,-5

Step-by-step explanation:

Given:

f(x)=x^3+7x^2+7x-15

Finding all the possible rational zeros of f(x)

p= ±1,±3,±5,±15 (factors of coefficient of last term)

q=±1(factors of coefficient of leading term)

p/q=±1,±3,±5,±15

Now finding the rational zeros using rational root theorem

f(p/q)

f(1)=1+7+7-15

   =0

f(-1)= -1 +7-7-15

     = -16

f(3)=27+7(9)+21-15

    =96

f(-3)= (-3)^3+7(-3)^2+7(-3)-15

     = 0

f(5)=5^3+7(5)^2+7(5)-15

    =320

f(-5)=(-5)^3+7(-5)^2+7(-5)-15

      =0    

f(15)=(15)^3+7(15)^2+7(15)-15

     =5040

f(-15)=(-15)^3+7(-15)^2+7(-15)-15

      =-1920

Hence the rational roots are 1,-3,-5 !

4 0
3 years ago
Read 2 more answers
Which unit rate is the lowest price per ounce? Choice A: 6 ounces of raisins for $2.98 Choice B: 13 ounces of raisins for $7.18
pishuonlain [190]

Answer:

Choice B.

Step-by-step explanation:

2.98 divided by 6 = 0.4966∞ (rounded to the nearest hundredths) 0.50

7.18 divided by 13 =  0.5523076923 (rounded to the nearest hundredths) 0.55

The difference is 5 cents.

~~~Hope this helps~~~ :)

5 0
2 years ago
Read 2 more answers
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