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yuradex [85]
3 years ago
8

What is the value of s in the equation below 0.3s + 0.8 (s -12)=33.3

Mathematics
1 answer:
nikdorinn [45]3 years ago
8 0
First, you distribute 0.8 through the parentheses by multiplying 0.8 by s and -12, which gets you to 0.8s-9.6. Now, the equation is changed to 0.3s+0.8s-9.6=33.3. Then, you add like terms (add the two numbers with the s) by doing 0.3s+0.8s which gets you to 1.1s-9.6=33.3, all thats left is adding 9.6 on both sides which gets you to 1.1s=42.9. Now finally, you divide 42.9 by 1.1 and you get 39. The value of s in the equation is 39.
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What is the equation of a line that is perpendicular to y=0.25x-7 and passes through the point -6,8
Olenka [21]

Answer:

The equation ls: y = -4x - 16

Step-by-step explanation:

Given the point (-6, 8)

Given the line y = .25x - 7

Use a fraction:

y = 1/4x - 7

The slope is 1/4 (or .25)

The slope of a perpendicular line is the negative inverse or -4.

Use the point slope form and substitute:

y - y1 = m(x - x1)

y - 8 = -4(x - (-6))

y - 8 = -4x - 24

y = -4x - 16

Proof:

f(-6) = -4(-6) - 16

= 24 - 16

= 8, giving (-6, 8)

7 0
3 years ago
How many two-digit positive integer less than 25 have the property that they are divisible by each of their digits? List themZ
Ierofanga [76]
This is easy, since there aren't many positive two digit integers under 25.
Just go through and check each one!

10 - not divisible by 0.
11 - divisible
12 - divisible
13 - not divisible by 3.
14 - not divisible by 4.
15 - divisible
16 - not divisible by 6.
17 - not divisible by 7.
18 - not divisible by 8.
19 - not divisible by 9.
20 - not divisible by 0.
21 - not divisible by 2.
22 - divisible
23 - not divisible by 2 or 3.
24 - divisible

To sum it up, the numbers 11, 12, 15, 22, and 24 are divisible by each of their digits.

Hope this helps (and your fortune is "Good things will come your way if you keep eating pizza.")!

8 0
4 years ago
What is the difference between (-5)^2 and -5^2​
Darya [45]

Answer:

Step-by-step explanation:

(-5)^2  - (-5^2)

25 - (-25)= 25 + 25 = 50

7 0
4 years ago
Pwease answer dis for me pweez, show work too..... :((
Lostsunrise [7]

Answer:

It does show direct variation.

Step-by-step explanation:

Every hour, you receive $8.50. This doesn't change throughout the entire table. On a graph, this would look like a line going through the origin, with points at (1, 8.5). (2, 17), (3, 25.5), and so on.

5 0
3 years ago
What is the correct decimal expansion of 52?<br> A) 52<br> B) 0.25<br> C) 5.20
Bas_tet [7]

Answer:

A

Step-by-step explanation:

52 is a whole number so the other answers are wrong because they are not whole numbers and less than 52.

8 0
3 years ago
Read 2 more answers
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