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Art [367]
3 years ago
8

Work out: 2/7 + 3/7 =? 5/8 + 7/8 =? 2/3 - 1/2 =?

Mathematics
2 answers:
slamgirl [31]3 years ago
6 0

Answer:

1. 5/7

<em>Explanation:</em>

<em>2 + 3 = 5 = 5/7</em>

2. 12/8 or 1.5

<em>Explanation:</em>

<em>5 + 7 = 12 = 12/8 or 1.5</em>

3. 1/6 or 0.167

<em>Explanation:</em>

<em>2/3 - 1/2 = 1/6 or 0.167</em>

Step-by-step explanation:

Hope this Helps!!

damaskus [11]3 years ago
4 0

Answer:

1. 5/7

2. 12/8 or 1 4/8

3.1/6

Step-by-step explanation:

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B is the midpoint of 2004-01-01-04-00_files/i0420000.jpg. Find the length of 2004-01-01-04-00_files/i0420001.jpg
damaskus [11]
You need to equate the two expressions to get the value of x. That is 3x - 5 = x + 3 and solve for x, you will get x = 4. Then get the length of line ZB and line BA by substituting the value of x you've got; hence line ZB = 3(4) - 5 = 7 and line BA = 4 + 3 = 7. Add the two lines to form a single line ZA, that is 7 + 7 = 14. So the answer is D.14
8 0
3 years ago
Read 2 more answers
Find the exact value of cos 157.5°.
Nonamiya [84]
Cos 157.5º=-cos (180º-157.5º)=-cos 22.5=-cos(45/2)

cos Ф/2=⁺₋√((1+cosФ)/2).

In this case 157.5º is in the second quadrant, therefore we use the following equation:
cos Ф/2=-√((1+cosФ)/2).          (we will have a negative number)

cos 157.5º=-cos (45/2)=-√((1+cos 45º)/2)
=-√((1+√2/2)/2)
=-√((2+√2)/4)
=-√(2+√2) / 2   (≈-0.92387...)

Answer: cos 157.5º= -√(2+√2) / 2

3 0
3 years ago
There are 127 lbs of fruits in the store: apples, oranges, and peaches. There are four times as many apples as there are peaches
Pepsi [2]
Let
x------> amount of pounds of apples
y------> amount of pounds of oranges
z-----> amount of pounds of peaches

we know that
x+y+z=127------> equation 1
x=4z-----> equation 2
y=7+z----> equation 3

substitute  equation 2 and equation 3 in equation 1
x+y+z=127----> (4z)+(7+z)+z=127---> 6z=127-7---> 6z=120----> z=20 lb
x=4z---> x=4*20----> x=80 lb
y=7+z----> y=7+20---> y=27 lb

 amount of pounds of apples----> 80 lb
amount of pounds of oranges----> 27 lb
amount of pounds of peaches---> 20 lb

4 0
3 years ago
K<br> The solution is k<br> K/6+5=17<br> The solution is k=
aleksklad [387]

k=72

Explanation:

72/6=12

12+5=17

3 0
2 years ago
Read 2 more answers
Some teachers compared how many years they have been teaching.
Alex_Xolod [135]

Answer:

6

Step-by-step explanation:

The range of a data set is the numbers covered by the data. This means that the range is the difference between the minimum and maximum. The minimum is the smallest point, 2, and the maximum is the largest point, 8. Therefore, since 8-2=6, 6 must be the range.

5 0
2 years ago
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