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2 years ago

I am a 2 digit number i am a less than 8+8 i am more than 6+6 i am even who am i?

Mathematics

2 answers:

NikAS [45]2 years ago

8 0

You are 14!

8+8=16 and we are given that you are less than 16.

6+6=12 and we are given that you are more than 12.

So the number can be 13, 14, 15.

We are also given that the number is even.

And the only even number here is 14. And 14 has 2 digits.

Hope this helps!

~Just a joyful teen

$-GraceRosalia$

Kay [80]2 years ago

6 0

Answer:

Step-by-step explanation:

16-12

even: 12 14 16

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Answer:

$1.80

Step-by-step explanation:

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2 years ago

You can eliminate one of the variable terms in an ___ by adding or subtracting another equation

MakcuM [25]

Answer:

system of equations

Step-by-step explanation:

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1 year ago

The class average on a math test was an 82 with a standard deviation of 5. If the

Alex787 [66]

Answer:

Option 3 and 4.

Step-by-step explanation:

The z score shows by how many standard deviations the raw score is above or below the mean. The z score is given by:

$z=\frac{x-\mu}{\sigma} \\\\where\ x=raw\ score,\mu=mean, \ \sigma=standard\ deviation$

Given that mean (μ) = 82, standard deviation (σ) = 5

1) For x = 74:

$z=\frac{x-\mu}{\sigma} \\\\z=\frac{74-82}{5} =-1.6$

Option 1 is incorrect

2) For x < 87

$z=\frac{x-\mu}{\sigma} \\\\z=\frac{87-82}{5} =1$

From the normal distribution table, P(x < 87) = P(z < 1) = 0.8413 = 84.13%

Option 2 is incorrect

3) For x = 95:

$z=\frac{x-\mu}{\sigma} \\\\z=\frac{95-82}{5} =2.6$

Option 3 is correct

4) For x < 77

$z=\frac{x-\mu}{\sigma} \\\\z=\frac{77-82}{5} =-1$

From the normal distribution table, P(x < 77) = P(z < -1) = 0.16 = 16%

Option 4 is correct

5) For x > 92

$z=\frac{x-\mu}{\sigma} \\\\z=\frac{92-82}{5} =2$

From the normal distribution table, P(x > 92) = P(z > 2) = 1 - P(z < -2) = 1 - 0.9772 = 0.0228 = 2.28%

Option 5 is incorrect

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2 years ago

4 The ratio of corresponding dimensions of two similar solids is 3/4. The surface

White raven [17]

4.

The ratio is 3/4 for corresponding dimensions, the ratio of their surface areas is equal to the square of this ratio:

$\sf (\dfrac{3}{4})^2=\dfrac{S}{96}$

Simplify the exponent:

$\sf \dfrac{9}{16}=\dfrac{96}{S}$

Cross multiply:

$\sf 9S=1536$

Divide 9 to both sides:

$\sf S\approx 170.7~m^2$

So the surface area of the second solid is 54 square meters.

The ratio is 3/4 for corresponding dimensions, the ratio of their volumes is equal to the cube of this ratio:

$\sf (\dfrac{3}{4})^3=\dfrac{720}{V}$

Simplify the exponent:

$\sf \dfrac{27}{64}=\dfrac{720}{V}$

Cross multiply:

$\sf 27V=46080$

Divide 64 to both sides:

$\sf V\approx 1706.7~m^3$

5.

A globe is a sphere, use the formula for the volume of a sphere:

$\sf V=\dfrac{4}{3}\pi r^3$

The radius is half of the diameter, so the radius here is 40/2 = 20. Plug it in the formula, use 3.14 to approximate for Pi:

$\sf V=\dfrac{4}{3}(3.14)(20)^3$

Simplify the exponent:

$\sf V=\dfrac{4}{3}(3.14)(8000)$

Multiply:

$\sf V\approx \boxed{\sf 33,493~in^3}$

6 0

3 years ago

Read 2 more answers

Help help help help help

Ede4ka [16]

$V_1 = 2*10*6 = 120\\V_2 = 6*2*(8-2) = 6 * 2 * 6 = 72\\V = V_1 + V_2 = 120 + 72 = 192$

Answer: 192 cm³.

5 0

2 years ago

I am a 2 digit number i am a less than 8+8 i am more than 6+6 i am even who am i?​

I am a 2 digit number i am a less than 8+8 i am more than 6+6 i am even who am i?