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BaLLatris [955]
3 years ago
12

What is the diameter and radius?​

Mathematics
1 answer:
vesna_86 [32]3 years ago
8 0

Circumference C=2pi*r

But in question C=40pi

This implies that 2pi*r=40pi

This implies that r=20 in.

d=2*r=40 in.

Hope this helps :)

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A scientist mixes water (containing no salt) with a solution that contains 35% salt. She wants to obtain 105 ounces of a mixture
Naya [18.7K]

Answer:

60 oz of water to add

45 oz of 35% salt solution should be used

Step-by-step explanation:

Let x = amt no. ounces in the first solution

and  105 - x = amt no. of ounces in the second solution

Ist solution contains 0% salt

2nd solution contains .35(105 - x) salt

.15(105= amt of salt in mix

So.

amt of salt in 1st solution + amt of salt in 2nd solution = amt of salt in the mix

0 + .35(105 - x) = .15(105)

Let's get rid of the fractions by multipying thru the equation by 100

35(105 - x) = 15(105)

3675 - 35x = 1575

-35x = -2100

x = 60 oz of water to add

105 - 60 = 45 oz of 35% salt solution should be used

7 0
2 years ago
Use given triangle to fill in the blank.<br> PLEASE HELP ME!!!!!!!!!!!!!!!
lina2011 [118]

Answer:

b/c

Step-by-step explanation:

Sin B = opposite side/ hypotenuse = AC/AB

3 0
2 years ago
Solve for W -5.1=1.3+w/4
Lera25 [3.4K]
-5.1=1.3+w/4
Subtract 1.3 from both sides
-6.4=w/4
Multiply both sides by 4
-25.6=w

Check work:
-5.1=1.3+(-25.6/4)
-5.1=1.3+(-6.4)
-5.1=1.3-6.4
-5.1=-5.1

Hope this helps!  :)
7 0
3 years ago
Please help V'W'is a translation of VW Write the translation rule.
wel

Answer:

(x+11), (y+15)

Step-by-step explanation:

the point v gets translated 11 points to the right, so the translation is x+11.

Point v also gets translated 15 points up, so the translation is y+15

4 0
2 years ago
Each side of a square sticky note is 9 centimeters long. What is the sticky note's area?
Anna [14]

Answer:

Have not done this in a while but I believe it is 81

Step-by-step explanation:

Please excuse me if I am wrong but hope this helps

4 0
3 years ago
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