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pshichka [43]
3 years ago
15

Dan bought 4 kilograms of dog food.

Mathematics
1 answer:
Nitella [24]3 years ago
3 0
Since a kilogram is 1000 grams, 4*1000=4000 kilograms, which is your answer
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Through: (-2, -1), slope = -1
oksano4ka [1.4K]

y= -1x -3

that's equation of the line

7 0
2 years ago
the sum of the digits of a certain two-digits number is 7.Reversing its digits increases the number by 9.What is the number
rusak2 [61]
Unit digit=y
tens digit=x
the number: 10x+y

We suggest this system of equations:
x+y=7
(10y+x)=(10x+y)+9
we solve it by substitution method.
x=7-y
10y+(7-y)=(10(7-y)+y)+9
9y+7=70-10y+y+9
9y+10y-y=70+9-7
18y=72
y=72/18=4

x=7-y
x=7-4=3

number=10x+y=10*3+4=30+4=34

solution: the number: 34

To check:
3+4=7
43=34+9
8 0
3 years ago
Read 2 more answers
How to find slope intercept form for perpendicular lines
Helga [31]
To find the slope intercept form of a line perpendicular to a given equation, the first thing you need to do is to find the slope of the perpendicular line. Because lines perpendicular to one another are always have a slope that is the negative reciprocal of them, the slope of the line perpendicular to y=x would be -1 (since the slope of y=x is 1). Then, since the perpendicular line passes through the point (5, -3), you would plug in the values of the x and y into the equation
y=-1x+b to get -3=-1(5)+b.

When you simplify, solve for b to get b=2. Now that you have your slope (m=-1) and your y-intercept (b=2), you can conclude that your perpendicular equation would be y=-x+2.
3 0
3 years ago
George has a mass of 65kg. What would George weigh on the Moon? (The gravitational field strength on the Moon is 1.6N/kg.)
maks197457 [2]

George would weigh

65 kg × 1.6N /kg = 104 Newtons

That's compared to around 650 Newtons on earth.

3 0
3 years ago
Read 2 more answers
If Paul saves $3.00 every week for twelve weeks and then buys a CD for $15.00 plus 9% tax, how much money will he have left?
pochemuha

Answer:

18.90

Step-by-step explanation:

3x12=36

36-15=21

21 x 0.9

8 0
3 years ago
Read 2 more answers
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