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Mnenie [13.5K]
3 years ago
9

What is X? 2.3x-8.7=0.8x-4.2 pLS hELP

Mathematics
1 answer:
daser333 [38]3 years ago
5 0

Answer:

x = 45/17

Step-by-step explanation:

We can move all x to 1 side and all the numbers to another. You can add 8.7 on both sides and get that 2.3x = 0.8x + 4.5. Next, we subtract by 0.8x on both sides to get that 1.7x = 4.5, where we can then divide by 17/10 on both sides to get that x is equal to 45/10 * 10/17, so that means that x = 45/17.

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Hi i need help please:))​
marin [14]

Answer:

i got 96

Step-by-step explanation:

you have to find the unit rate for 1 driveway and times that by 12

32 divided by 4 is 8

8 x 12 is 96

hope this helps :)

4 0
3 years ago
A group of students were given a spelling test the table shows their mark Mark: 6,7,8,9,10 frequency:5,4,7,10,4 a) work out the
____ [38]

Answer:

Step-by-step explanation:

From the information given,

Mark: 6,7,8,9,10

frequency:5,4,7,10,4

a) Range = highest mark - lowest mark

Range = 10 - 6 = 4

b) The number of students in the group is the sum of the frequency. Therefore,

Number of students = 5 + 4 + 7 + 10 + 4 = 30 students

c) Mean mark = (mark × frequency)/total frequency

[(6 × 5) + (7 × 4) + (8 × 7) + (9 × 10) + 10 × 4)]/ 30

Mean mark = (30 + 28 + 56 + 90 + 40)/30 = 244/30

Mean mark = 8.1

6 0
3 years ago
13.989 to the nearest tenth
Scrat [10]
13.989 to the nearest tenth is 14.0

Hope this helps
6 0
3 years ago
Read 2 more answers
Grade 10 math help please. Please show work
masha68 [24]

Answer:

43.94?

Step-by-step explanation:

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cos(∅) = \frac{18}{25}

cos(∅) = 0.72

cos⁻¹(0.72) = 43.94

I don't know if that's what you're looking for, but... If it's not correct, lmk so I can rewrite it. :)

4 0
3 years ago
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Likurg_2 [28]
I need the full question and not just a graph to correctly answer this...0
6 0
3 years ago
Read 2 more answers
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