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german
3 years ago
12

Add using a number line. -3/4 + 1 1/4

Mathematics
2 answers:
Andru [333]3 years ago
8 0
Find 1 1/4 on the number line and count back 3/4 (why it is negative) answer is 1/2.
chubhunter [2.5K]3 years ago
7 0

Answer:

7

Step-by-step explanation:

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The scale factor of the volume of two cubes is 8 to 27. What is the scale factor of the sides of the cubes?
tekilochka [14]
The scale factor of the length of the sides of the cubes is 2:3
3 0
3 years ago
A)125<br> B)130<br> C)120<br> D)135
Kipish [7]

Answer:

The answer is B.

Step-by-step explanation:

Pentagons have a sum of 540°

540 - (115 + 115 + 90 + 90)

540 - 410

130

7 0
3 years ago
Read 2 more answers
-
bixtya [17]

Using an exponential function, it is found that f(5.5) = 19.8.

<h3>What is an exponential function?</h3>

An exponential function is a function in which the growth rate is a percentage, modeled by:

y = ab^x

In which:

  • a is the initial value.
  • b is the rate of change.

f(3.5) = 25 means that:

ab^{3.5} = 25

a = \frac{25}{b^{3.5}}

f(8.5) = 14 means that:

ab^{8.5} = 14

Hence:

\frac{25}{b^{3.5}} \times b^{8.5} = 14

25b^5 = 14

b = \sqrt[5]{\frac{14}{25}}

b = 0.89

a = \frac{25}{0.89^{3.5}} = 37.59

Hence, the function is given by:

y = 37.59(0.89)^x

Then, when x = 5.5:

f(5.5) = 37.59(0.89)^{5.5} = 19.8

More can be learned about exponential functions at brainly.com/question/25537936

7 0
2 years ago
Line DCE is parallel to line AB
krek1111 [17]

Answer:

Angle DCA = Angle CAB. (Alternate Interior Angle)

Angle DCA = 68°

Angles(DCA + ACB + BCE) = 180°. (Linear Pair)

Angle ACB + 68° + 33° = 180°

Angle ACB = 79°

Therefore,

Angle ABC = 33°. (Alternate Interior Angle)

4 0
3 years ago
A road 4 inches long on a map is 80 miles long in real life. A river is 2 ½ inches long on the map and is 50 miles long in real
jonny [76]
Not Proportional. Sorry if it’s wrong
7 0
3 years ago
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