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Salsk061 [2.6K]
3 years ago
9

What is 16 less than a number

Mathematics
2 answers:
Gre4nikov [31]3 years ago
7 0
Less than mean subtracting
bogdanovich [222]3 years ago
4 0

X-16 in algebraic expression.

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Suppose a laboratory has a 38 g sample of polonium-210. The half-life of polonium-210 is about 138 days. How many half-lives of
ira [324]
To find the number of half lives divide the total number of days by the number of days for 1 half live:

1104 / 138 = 8

There are 8 half lives.

To find the total amount left multiply the starting amount by 1/2 to the 8th power:

38 * 0.5^8 = 0.148 = 0.15 grams

The answer is the last one.
6 0
3 years ago
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Question 2 of 5 Which number line and equation show how to find the distance from -2 to 5? 2-5 O A. 43 D |-2-5 B. -6 -2 0 1 22 3
grigory [225]
The answer is A hoped this helped
6 0
3 years ago
Benito wrote the equations shown about the figure. Explain Benito’s errors.
Whitepunk [10]

Answer:

  • Benito's error was stating that the correspongind sides and angles are equal (=) instead of stating that they are congurent (≅).

Explanation:

In geometry two different figures (segments, angles, polygons ,...) are not said to be equal but congruent.

Congruent means that they have the same measure but not that they are equal in other senses.

The use of equal is applied to numbers or variables),so you can tell x = 2, 3 = 3, A = πr², but you should not say segment AB is equal to segment BC. Instead you say segment AB ≅ segment BC, which is segment AB is congruent to segment BC.

Of course, you still can use the word equal (symbol =) if you state that you are talking about measures.

This also can help you

  • Correct: segment  AB ≅ segment BC  
  • Correct: legth of segment AB = length of segment BC
  • Incorrect: segment AB = segment BC

Segment AB and segment BC are not equal because they are two different segments. They are congruent because they have the same length.

Note: the bars shown over the letters AB, BC, AD, DC, mean segment.

6 0
4 years ago
I need help can someone help me
Stels [109]

Answer:

what statements are there

5 0
3 years ago
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If y varies directly as x, and y is 18 when x is 5, which expression can be used to find the value of y when x is 11
Gwar [14]

Answer:

expression: y = 3.6x

for x = 11, then y = 39.6

Step-by-step explanation:

Direct variation uses the following equation:

y = kx

For each case, there will be an actual number instead of k.

We need to find which value of k our problem uses. We can use teh given x and y values, and solve for k.

y = kx, use x = 5 and y = 18, and solve for k

18 = k * 5

k = 18/5 = 3.6

In our case, k = 3.6, so the specific equation for direct varuiation for this problem is

y = 3.6x

Now we can find y when x = 11.

y = 3.6x

y = 3.6(11)

y = 39.6

3 0
3 years ago
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