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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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If x is 1 what is the value of y?9x - 5y = 29
mylen [45]

Given

The equation,

9x - 5y = 29.

To find the value of y when x is 1.

Explanation:

It is given that,

9x-5y=29

That implies,

When x=1,

\begin{gathered} 9(1)-5y=29 \\ 9-5y=29 \\ -5y=29-9 \\ -5y=20 \\ y=\frac{20}{-5} \\ y=-4 \end{gathered}

Hence, the value of y is -4.

4 0
1 year ago
CAN ANYONE HELP ME ASAP?!? PLEASEEE! I’ll give brainliest! <br> 1-4
liraira [26]

Answer:

35 degrees

42 degrees

x = 8 degrees

x = 7 degrees

Step-by-step explanation:

1)

m <1 = 70/2 = 35 degrees

2)

m <1 = 84/2 = 42 degrees

3)

6 + 4 x = (9 x + 4) / 2

12 + 8 x = 9 x + 4

12 - 4 = x

x = 8 degrees

4)

3 x - 1 = x + 13

2 x = 14

x = 7 degrees

6 0
3 years ago
A kite is currently flying at an altitude of 19 meters above the ground. If the angle of elevation from the ground to the kite i
polet [3.4K]
Visualize the kite as a triangle, with the point where the kite is anchored being 'A', the kite being 'B', and the point directly below the kite being 'C'. We know that line segment BC is 19 meters, and can use trigonometry to find the length of the string, line segment AB. The operator 'sin' can be calculated by dividing the opposite leg over the hypotenuse, so given the angle 'A', we can solve for the hypotenuse. sin(33)= \frac{19}{x}. If we solve for 'x', we get x=  \frac{19}{sin(33)}. Plug 19 over sin(33) into your calculator and you get 34.885, so the answer is A, 35 feet
8 0
4 years ago
Express this number in scientific notation.
xxTIMURxx [149]

Answer:

6.21 × 10⁵

Step-by-step explanation:

move thee decimal from .21000 thats how you get 5

8 0
1 year ago
The perimeter of a rectangle is 20 centimeters. The length is 6 centimeters. What is the area of the rectangle?
I am Lyosha [343]
2x + 2y = 20
2(6) + 2y = 20
12 + 2y = 20
2y = 8
y = 4
width = 4

Area = 6 × 4
= 24 cm
3 0
3 years ago
Read 2 more answers
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