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3 years ago

What is 1/2 + (-1/4÷2/3)

Mathematics

2 answers:

stiks02 [169]3 years ago

7 0

1/8 in fraction and/or in decimal form is 0.125

USPshnik [31]3 years ago

4 0

1/2 - 1/4/ 2/3
1/2 - 1/4* 3/2
1/2 - 3/8
1/8

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For her presentation on the Wonders of the World, Mary baked a square pyramid-shaped cake as pictured below. The slant height of

miskamm [114]

Answer:

volume = 195.52 in³

Step-by-step explanation:

given data

slant height of the cake = 10 inches

base length = 8 inches

solution

we know that volume pyramid is express as

volume = $\frac{A^2\times h}{3}$ ..............1

here

we use pythagoras for height

hypotenuse² = side1² + side2²

put here value with other side is half of a square side

10² = h² + 4²

solve it we get

h = 9.165 in

so put here value in equation 1 we get

volume = $\frac{8^2\times 9.165}{3}$

volume = 195.52 in³

6 0

3 years ago

The diagonal of a square measured 10 cm. Find the length of a side of the square to the nearest tenth.

Naddika [18.5K]

Answer:

7.1 cm

Step-by-step explanation:

Let s represent the side length of the square. The Pythagorean theorem tells you the relationship to the diagonal length is ...

(10 cm)² = s² +s² . . . . the sum of the squares of the legs is the square of the hypotenuse

100 cm² = 2s² . . . . . . simplify

50 cm² = s² . . . . . . . . divide by 2

√(50) cm = s ≈ 7.1 cm . . . . . take the square root

The length of a side of the square to the nearest tenth is 7.1 cm.

6 0

3 years ago

Use the following information to determine your answer: The length of a movie falls on a normal distribution. About 95% of movie

Elenna [48]

Answer:

$75= 119 -1.96 \sigma$

$\sigma = \frac{75-119}{-1.96}= 22.45$

And tha's equivalent to use this formula:

$163= 119 +1.96 \sigma$

$\sigma = \frac{163-119}{1.96}= 22.45$

Step-by-step explanation:

For this case the 95%of the values are between the following two values:

(75 , 163)

And for this case we know that the variable of interest X "length of a movie" follows a normal distribution:

$X \sim N( \mu, \sigma)$

We can estimate the true mean with the following formula:

$\mu = \frac{75+163}{2}= 119$

Now we know that in the normal standard distribution we know that we have 95% of the values between 1.96 deviations from the mean. We can find the value of the deviation with this formula:

$75= 119 -1.96 \sigma$

$\sigma = \frac{75-119}{-1.96}= 22.45$

And tha's equivalent to use this formula:

$163= 119 +1.96 \sigma$

$\sigma = \frac{163-119}{1.96}= 22.45$

4 0

3 years ago

Please, answer thank you

wolverine [178]

B.)between 3 and 4 tons.

5 0

3 years ago

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grant and two friends drove 210 miles . their car got 31 miles per gallon on the trip. How many gallons of gas did they use on t

Bad White [126]

Answer:6.774 gallons

Explanation: They drove 210 miles with 31 miles per gallon. So you divide 220/31=x
X=6.774 gallons

6 0

3 years ago