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Slav-nsk [51]
3 years ago
11

AB=1cm and AC=3cm. Find the radius of the circle. (Problem Number 13)

Mathematics
1 answer:
mafiozo [28]3 years ago
5 0

Answer:

2cm

Step-by-step explanation:

AB= 1cm

AC= 90°

OB= 180°

OB= 2cm

To find OA= 2 divide 2

= 1cm

AB+OA= 2CM

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A Chemist needs to mix a 20% acid solution with a 50% acid solution to obtain 15 liters of a 34% acid solution. How many liters
Nuetrik [128]

8 litres (amount of 20% solution needed) and 7 litres for (amount of 50% solution needed)

<u>Step-by-step explanation:</u>

Let consider ‘x’ for 20% acid solution and (15 – x) for 50% acid solution. And so, the equation would be as below,

                         20% in x + 50% in (15 – x) = 15 litres of 34%

Convert percentage values, we get

                              0.20(x) + 0.50 (15 – x) = 15 (0.34)

                              0.20 x + 7.5 – 0.50 x = 5.1

                              -0.3 x + 7.5 = 5.1

                              0.3 x = 7.5 – 5.1

                              0.3 x = 2.4

x = \frac{2.4}{0.3} = 8 litres (amount of 20 \% solution needed)

Apply ‘x = 8’ value in (15 – x) we get,

                         15 – 8 = 7 litres

The value of 7 litres for (amount of 50% solution needed)

8 0
3 years ago
Is 5 in the solution set x +3≥8
forsale [732]

Answer: Yes

Step-by-step explanation:

x>=8-3

x>=5

6 0
3 years ago
What is the product of 2x(5+3)-4^2
Zigmanuir [339]

Answer:

2×8-4^2

=16-16

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0 is the porduct

7 0
3 years ago
Bob swam a total of 250
labwork [276]

Answer:

i think 220

Step-by-step explanation:

because if he swim 250 then 30 less it would be 220

4 0
3 years ago
Point N is located at (-2, 4) on the coordinate plane. Point N is reflected over the y
Alona [7]

Answer:

(2,4)

Step-by-step explanation:

It's reflected over the y axis so it would still have the same y value but the x value will be positive instead of negative

The point is (2,4)

8 0
3 years ago
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