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Ann [662]
3 years ago
15

Basically im on lvl 2 for this Geometry question, need help!!​

Mathematics
1 answer:
aniked [119]3 years ago
7 0

Answer:D.10x=150

wwww

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Evaluate 8r<br> rs when r<br> 6 and s = 5.
Ray Of Light [21]

Answer:

18

Step-by-step explanation:

I am assuming you meant 8r-rs, in this case:

Plug in r=6 and s=5:

8(6)-(6)(5)

8*6 = 48 and -6*5= -30

Thus,

48-30= 18

4 0
3 years ago
Read 2 more answers
What is the percent uncertainty in the measurement 2.58 ± 0.15 cm?
saveliy_v [14]

\frac{0.15}{2.58}  \times 100\% = 5.814\%
8 0
3 years ago
Mariana averaged 80 on her first three math exams. The first score was 86. The second score was 74. What was the third exam scor
Anna71 [15]

The three scores are 86, 74, and an unknown score x. The average (i.e. the sum divided by how many there are) is 80, so we have

\dfrac{86+74+x}{3}=80

Multiply both sides by 3 and you get

160+x=240

Subtract 160 from both sides to get

x=240-160=80

Note: you could solve this exercise very quickly if you notice that the two numbers, 86 and 74, are symmetrical with respect to 80, which is the average. So, the third number must be the average.

6 0
3 years ago
The operation * on the set Z of integers is defined by x*y = 3x + 2y - 1, x, y E Z. Find the value of x such that x*2=5​
Assoli18 [71]

Answer:

x = 2/3

Step-by-step explanation:

Let's unpack the equation x*2=5 from our definition of *:

x*2=3x+2(2)-1=5 (where x\in \mathbb{Z})

Now that we've got things defined in terms of familiar operations, we can simplify and solve for x:

3x+2(2)-1=5\\3x+4-1=5\\3x+3=5\\3x=2\\x=2/3

8 0
2 years ago
Find the approximation value of 1104 ÷48= ?​
MrMuchimi

Answer:

Step-by-step explanation:

1104 = 2⁴×3×23

48 = 2⁴×3

1104 ÷ 48 = 23

7 0
3 years ago
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