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densk [106]
3 years ago
13

We have 500 mice and want to determine how effective a given cure for a virus. 10 mice are taken from the group and injected wit

h our cure. 7 mice were cured. According to this experiment, how many mice should be cured?
Mathematics
1 answer:
Arturiano [62]3 years ago
3 0

Answer:

350

Step-by-step explanation:

if you take 500-10 that gives you 490 left to cure if 7 of those 10 are cured the 350 out of the total mice would be cured.   if it is not the correct answer i am sorry that is just how I was taught to do it.

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Find the missing factor 5y^2-4y-9=(y+1)
disa [49]

Answer:

y = {1,2}

Step-by-step explanation:

5y^2 - 4y - 9 = y + 1

5y^2 - 5y - 10 = 0

5(y^2 - y - 2) = 0

5 (y - 2) (y - 1) = 0

y = {1,2}

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8 0
3 years ago
what is true about the solutions of a quadratic equation when the radical in the quadrant formula is negative
lisov135 [29]

Since the square root of a negative number is not a real number, then a negative radical will result in no real solution.

3 0
3 years ago
SoMeonE plZ hAlp me lol
jeka94

C.√93


A=17

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3 0
3 years ago
1/7(x+21)=-6<br> answer ?
Talja [164]
(1/7) Multiplied By x is 1/7x And (1/7) Multplied By Positive 21 is 3. So It Will Then Change To 1/7x + 3 = -6.
Subtract 3 From Both Sides. Then The Equation Changes To 1/7x = -9
Then Since (1/7) Basically Means To Divide You Would Multiply By 7 On Both Sides And Then x Would Equal -63!(:
Then Can Plug In -63 Where x Is To Check Your Work! Hope I Helped!
5 0
3 years ago
Read 2 more answers
What is the value of the expression below?<br><br><br> (3 1/2 - 9 3/4) ÷ (-2.5)
Alexandra [31]

Answer:

2.5

Step-by-step explanation:

3 1/2 - 9 3/4 =

3 2/4 - 9 3/4 = -6 1/4

-6 1/4 = -6.25 ÷ (-2.5) = 2.5

5 0
3 years ago
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