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devlian [24]
4 years ago
5

What is the surface area

Mathematics
2 answers:
valina [46]4 years ago
8 0

Answer:

22 meters^2

Step-by-step explanation:

Surface Area = 2×(1×2 + 1×3 + 2×3) = 22 meters2

ANTONII [103]4 years ago
7 0
The surface area of a solid object is a measure of the total area that the surface of the object occupies.
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I can buy a box of cereal for $3.50 that comes with 35 half-cup servings.
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Please I think the question is not complete
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2 years ago
Given side lengths 4 units, 8 units, and x units, determine the range in which x must lie in order for a triangle to exist.
Nana76 [90]

Answer:

A is the correct answer

Step-by-step explanation:

Mathematically if we have lengths a, b and c

For a triangle to occur, let us say that the third side is c

then a + b must be greater than or equal to c

Hence c must be equal to (4 + 8) or greater than (4 + 8)

With the options given , A is the correct answer

7 0
3 years ago
A scientist needs 10 L of a solution that is 60% acid. She has a 50% acid solution and a 90% acid solution she can mix together
sineoko [7]

Answer:

<u>The equations system is:</u>

<u>x + y = 10</u>

<u>0.5x + 0.9y = 6</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Liters of 60% acid solution needed = 10

x = Number of liters of the 50% solution

y = Number of liters of the 90% solution

2. Which equation represents the total liters of acid that are needed?

There are two equations needed:

The first one related to the total liters needed, 10 in this case:

x + y = 10

The second one related to the acid concentration of the 10 liters:

0.5x + 0.9y = 10 * 0.6

0.5x + 0.9y = 6

<u>The equations system is:</u>

<u>x + y = 10</u>

<u>0.5x + 0.9y = 6</u>

Solving for x and y in the 2nd equation, we have:

0.5 (10 - y) + 0.9y = 6

5 - 0.5y + 0.9y = 6

0.4y = 6 - 5

0.4y = 1

y = 1/0.4 = 2.5 ⇒ x = 7.5 (10 - 2.5)

The scientist can mix 7.5 liters of the 50% acid solution and 2.5 liters of the 90% acid solution to get the 10 liters of the 60% acid solution.

6 0
4 years ago
Lucy is constructing the circumscribed circle for △XYZ. She has already used her compass to complete the part of the constructio
Lerok [7]
Correct is A through C,, so B. Just took the quiz
8 0
3 years ago
Read 2 more answers
Can you think of a number k for which k^2 &lt; k is true?​
wariber [46]

Answer:

Some k's that will work:

1/2

1/3

1/4

(There are infinitely many answers.)

Step-by-step explanation:

Obviously 5 won't work because 25<5 is not true.

What about a negative? -5?

25<-5 is not true.

How about 1/3? 1/9<1/3 is true so 1/3 works.

Note: Think of a number between 0 and 1.

1/4<1/2 is true and (1/2)^2=1/4.

1/16<1/4 is true and (1/4)^2=1/16.

You can solve k^2<k.

Subtract k on both sides.

k^2-k<0

Factor.

k(k-1)<0.

So k^2-k is a parabola with x-intercepts (k-intercepts) at k=0 and k=1.

The parabola is open up so any number between 0 and 1 will satisfy k^2<k since between 0 and 1 the parabola is less than y=0 ( the x-axis).

4 0
3 years ago
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