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alisha [4.7K]
3 years ago
12

Which is a counterexample to this conjecture? The sum of 3 and any other number is an odd number. A. 3 + 4 = 7 B. 3 + 51 = 54 C.

3 + 58 = 61 D. 3 + 98 = 101
PLEASE HELP ME!
Mathematics
1 answer:
s2008m [1.1K]3 years ago
4 0
It would be 3, 3 + 51= 54, which is even, meaning it counterexamples the conjecture that 3 plus any number is odd.
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Sharon wants to make 24 half-cup servings of soup. How many ounces of soup does she needs?
Ksju [112]

Answer:The answer is 96

Step-by-step explanation: 4 ounces equal half a cup, so 24x4=96 (which equals 12 full cups)

7 0
3 years ago
Heather and her friends are painting the walls of a storage room in the basement. Each wall is 9 m long and 2 m high. There are
inna [77]

Answer:

  • 7 L
  • $26.25

Step-by-step explanation:

The four walls have a linear length of (9 m)×4 = 36 m. Of that, the two 1-meter doors are not painted, so the linear length of the painted area is 34 m. The painted area is 2 m high, so the total area being painted is ...

  A = LW

  A = (34 m)(2 m) = 68 m²

The amount of paint needed for this area is ...

  (68 m²) × (1 L/(10 m²) = 6.8 L

If we assume the paint only comes in units of 1 L, then Heather will need 7 L of paint.

The cost of 7 L of paint is ...

  (7 L) × ($3.75/L) = $26.25

Heather will need 7 L of paint, for a total cost of $26.25.

5 0
2 years ago
Find the volume of the cone 3ft and 2 ft. Round your answer to the nearest tenth if necessary. Use 3.14 for pie
denpristay [2]

Answer:

37.68 ft^3

Step-by-step explanation:

The parameters used in describing a cone is radius and height

Hence

Radius= 3ft

Height = 2 ft

The volume of a cone is given as

v=\frac{1}{3} \pi r^2 h

substitute

v=\frac{1}{3}*3.14*3^2*2^2\\\\v=\frac{1}{3}*3.14*9*4\\\\v=\frac{1}{3}*113.04\\\\v=37.68 ft^3

Hence the volume is 37.68 ft^3

5 0
2 years ago
The distance between Columbus,Ohio and New York City is about 560 miles how many hours would it take the train to travel between
sergey [27]
Since the distance is 560 miles and the bus goes 268 miles per hour, the answer can be given as:
If 268=1 hour
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3 0
3 years ago
Shiloh is 7 years older than Courtney. Shiloh's age is 13 years less than two times Courtney's age. The system below models the
Andrews [41]

I'm afraid I don't see the models you have written about although I do know the answer. (C= Courtney's age, S= Shilo's age)

Shilo is 7 years older then Courtney, which equals to C+7=S.

While at the same time Shilo is 13 years younger then twice Courtney's age. This turns into Cx2-13=S.

c+7=cx2-13. This is the equation, now lets work it out.

Add 13 on each side and you get

c+20=2c

Now we subtract c from each side and we get

20=c Therefor we have found out that Courtney is 20 years old.

Shilo being 7 years older then Courtney is 27


8 0
3 years ago
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