1. 81 1/2 = 163/2
2. 32 1/5 - 64 1/3 =
483/15 - 965/15 =
-482/15 or -32 2/15
3. 16 1/4 = 65/4
4. 49 1/2 + 27 1/3 =
99/2 + 82/3 =
297/6 + 164/6 =
461/6 or 76 5/6

7 0

3 years ago

LaShaundra is buying fence for two triangular sections of her garden.

mixas84 [53]

Answer: 80 feet.

Step-by-step explanation:

1. As you can see in the figure, triangle ABC and the triangle DFG are similar.

2. The scale of factor of triangle ABC to triangle DFG is the following:

$sf=\frac{20ft}{4ft}\\sf=5ft$

3. Therefore, the lenght of the side DG of the trinagle DFG is:

$DG=5*AC\\DG=5*7ft\\DG=35ft$

4. The perimeter of the triangle DFG is:

$P_{DFG}=20ft+25ft+35ft=80ft$

5. Therefore, she would need 80 feet of fence.

8 0

2 years ago

Can somebody help me with this pretest

Ann [662]

Answer:

yes, I can help you do it.

8 0

2 years ago

Deanna gets 3 problems incorrect on a math quiz. Her score is 85%. How many questions are on the quiz?

Vilka [71]

Answer:

20 questions.

Step-by-step explanation:

Let x be the number of questions on the quiz.

85 % means 85 out of 100 (or 85/ 100 )

85/ 100 = 3/x

--->100-85=15

--->15/3=5

--->100/5=20

Meaning each question was worth 5% and there were 20 questions.

5 0

3 years ago