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2 years ago

Which expression is equivalent to 12a + 8?

Mathematics

1 answer:

Blababa [14]2 years ago

7 0

I’m pretty sure it’s the first one. 4(3a + 2)

4 x 3a = 12a
4 x 2 = 8

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Food allergies affect an estimated 7% of children under age 5 in the US. What is the probability that in a kindergarden class of

bezimeni [28]

Answer:

Probability of atleast one of 12 student has food allergies ≈ 0.58 ( approx)

Step-by-step explanation:

Given: Probability of a children under age 5 has food allergies = 7%

= $\frac{7}{100}$

To find : Probability of atleast one of 12 student has food allergies

Probability of a chindren under age 5 does not have food allergies = $1-\frac{7}{100}$

⇒ prob = $\frac{93}{100}$

now we find Probability of atleast one of 12 student has food allergies this means we have to find prob of 1 student, 2 student, 3 student, till 12 student have allergy out of 12 student of class then add all prob.

But instead of finding all these probability we find probability of student having no allergy.i.e., 0 student then subtract it from 1(total probability)

Probability of 0 student having allergy out of 12 student = $(\frac{93}{100})^{12}$

Therefore, Probability of atleast one of 12 student has food allergies

= $1-(\frac{93}{100})^{12}$

= $0.581403702521$

≈ 0.58 ( approx)

8 0

2 years ago

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Calculate, to the nearest cent, the future value FV of an investment of $10,000 at the stated interest rate after the stated amo

Fynjy0 [20]

Answer: 1,000

First, you have to find how much 7.5% is coming out of 10,000. So in this case it's 750. Multiply 750 by 12 years. Thats 9000, you then subtract 9000 and 10,000 to get 1,000.

4 0

3 years ago

PLS I WILL GIVE BRAINLIEST

Nana76 [90]

Answer:

208 $cm^2$

Step-by-step explanation:

We can find the area of the net by adding up the area of each of the 6 rectangles that make up the net. Since two of each rectangle are the same, we only have to find the area of the 3 different sized rectangles and multiply each by 2.

Rectangle pairs are:

Left rectangle and right rectangle
Top rectangle and the rectangle above the bottom rectangle
Bottom rectangle and the rectangle surrounded by all for sides

Now, let's solve the question.

Left rectangle:

6 x 4 = 24, rectangle has area of 24 squared cm

Top rectangle:

6 x 8 = 48, rectangle has area of 48 squared cm

Bottom rectangle:

4 x 8 = 32, rectangle has area of 32 squared cm

Add up the areas:

(24 x 2) + (48 x 2) + (32 x 2) = 208

The rectangle has a surface area of 208 squared cm

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2 years ago

Write a linear function for the following in slope-intercept form: (2,26)<br> (8,44)*

marshall27 [118]

Answer:

${ \tt{slope = \frac{44 - 26}{8 - 2} }} = 3 \\ y = mx + c \\ { \bf{26 = (3 \times 2) + c}} \\ c = 20 \\ \\ = > { \boxed{ \tt{y = 3x + 20}}}$

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2 years ago

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Convert 180 inches to feet.

Crazy boy [7]

Answer:

180"/12 = 15 ft

Step-by-step explanation:

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2 years ago

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