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avanturin [10]
3 years ago
8

What does an adjacent angle equal???

Mathematics
2 answers:
adoni [48]3 years ago
8 0
Adjacent angles always equal 180°
grigory [225]3 years ago
7 0
Adjacent angles add up to 180 degrees. Adjacent angles are also known as supplementary angles because they add up to 180*
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The cost of 4 notebooks and 3 pens is $14.50. The cost of 5 notebooks and 6 pens is $21.50. Part A: What is the cost of each ite
White raven [17]

Answer:

notebook: $2.5

pen: $1.5

part B, he can buy 3 pens

Step-by-step explanation:

A

let the cost of notebook be n, cost of pen be p

1. 4n + 3p = 14.5

2. 5n + 6p = 21.5

by 1, you can get 3p = 14.5 - 4n, put it into 2

5n + 2(14.5 - 4n) = 21.5

5n + 29 - 8n = 21.5

3n = 29 - 21.5 = 7.5

n = 2.5

put n = 2.5 into 1

4(2.5) + 3p = 14.5

3p = 4.5

p = 1.5

B

Waseem buy 3 notebooks for each pen, let number of pen be m, then the number of notebook will be 3m

m(2.5) + 3m(1.5) < 27

2.5m + 4.5m = 7m < 27

m < 27/7

maximum integer value for m = 3

6 0
2 years ago
Leanne multiplied 8 x 4.3 and got 32.24. Is Leanne correct?Use an area model to explain your answer
dlinn [17]

Answer:

No, not correct.  

Step-by-step explanation:

Note that 8 * 4.3 can be broken up as follows:

8 * (4 + 0.3)

and that 4*8 =32, and that 0.3(8) = 2.4 (not 0.24).

Then 8 * (4 + 0.3) becomes 32 + 2.4 = 34.4

3 0
3 years ago
There were 20 boys and 20 girls in a chorus. What is the ratio of boys to girls
aliya0001 [1]

Answer:

1:1

Step-by-step explanation:

3 0
3 years ago
What is the circumference of a circle whose radius is 13?
Inessa05 [86]

Answer:

Circumference, C = 81.68 units

Step-by-step explanation:

Given that,

The radius of the circle, r = 13 units

We need to find the circumference of the circle. The circumference of a circle is the sum of the outer boundary. For a circle, it is given by :

C=2\ \pi r

C=2\ \pi \times 13

C = 81.68 units

So, the circumference of the circle is 81.68 units. Hence, this is the required solution.

7 0
3 years ago
Read 2 more answers
Which ordered pairs in the form (x, y) are solutions to the equation 7x−5y=28 ? Select each correct answer. <br>(7, 9) <br>(−1, 
dsp73
Trere are two correct answers.That are (-1,-7) and (-6,-14)
5 0
3 years ago
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