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2 years ago

Use the distributive property to answer 9x19

Mathematics

1 answer:

Rus_ich [418]2 years ago

6 0

Answer: 9x19=171

Step-by-step explanation:

Jon has 9times as many mm as lala has 19 more then jon.

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I really need help do can someone do it step by step so I can understand plzzzz

Alekssandra [29.7K]

Answer:

64 × pi m²

Step-by-step explanation:

the formulas needed for the surface area of a cone are :

base area plus the "mantle", the lateral "wall" around it.

the base area is a circle.

so, that formula is Ac = pi×r²

the "wall" formula is Aw = pi×r×s

r = radius

s = slant height = 12

the formula for the surface area of a sphere is

As = 4×pi×r²

we know now, that both surface areas are the same, and also the radius is the same for both objects.

Ac + Aw = As

pi×r² + 12×pi×r = 4×pi×r²

12×pi×r = 3×pi×r²

12×pi = 3×pi×r

12 = 3×r

r = 4 m

now, we only need to use this value of r in our formulas for surface areas, like for the sphere :

4×pi×r² = 4×pi×4² = 4³×pi = 64×pi

3 0

2 years ago

Please help, I will mark Brainliest.

Goshia [24]

It’s rational because the square root of 0.49 is 0.7

3 0

2 years ago

A -42+(-17) b 8-(-9) c 8(-9) D E F G

Diano4ka-milaya [45]

Answer:

.A -42+(-17)

Step-by-step explanation:

7 0

2 years ago

The magnitude of an earthquake is calculated using the Richter Scale, M=log I/io , where I0 is the threshold intensity and the i

marysya [2.9K]

Answer:

The answer is log(980)! :)

5 0

2 years ago

On a graphing calculator, you can use the function normalcdf(lower bound, upper bound, μ, σ) to find the area under a normal cur

larisa86 [58]

Answer:

99.87% of cans have less than 362 grams of lemonade mix

Step-by-step explanation:

Let the the random variable X denote the amounts of lemonade mix in cans of lemonade mix . The X is normally distributed with a mean of 350 and a standard deviation of 4. We are required to determine the percent of cans that have less than 362 grams of lemonade mix;

We first determine the probability that the amounts of lemonade mix in a can is less than 362 grams;

Pr(X<362)

We calculate the z-score by standardizing the random variable X;

Pr(X<362) = $Pr(Z$

This probability is equivalent to the area to the left of 3 in a standard normal curve. From the standard normal tables;

Pr(Z<3) = 0.9987

Therefore, 99.87% of cans have less than 362 grams of lemonade mix

4 0

3 years ago