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Strike441 [17]
3 years ago
7

What is the result of subtracting the second equation from the first ? -3x+2y=7 -3x-2y=4

Mathematics
1 answer:
Free_Kalibri [48]3 years ago
3 0

Answer:

4y = 3

Step-by-step explanation:

(-3X+2Y)-(-3X-2y)= 7-4

-3X+2Y+3x+2Y = 3

4y = 3

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What number makes a ratio equivalent to 7:15
nirvana33 [79]

Answer:

double those numbers:

14:30 is equivalent to 7:15

May I have brainliest please? :)

4 0
2 years ago
1.325 to the nearest hundreths
12345 [234]
Its 1.33 because you round up if its 5 or greater
4 0
3 years ago
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What can you multiply to give you -42 and add up to 1
yanalaym [24]
-6 + 7 = 1 and -6*7 = -42

So f(x) = (x + 7)(x - 6)
7 0
3 years ago
If a punch bottle says 20% fruit juice,and it is a 200 milliliter bottle, how many milliliters of fruit juice is in the bottle?
padilas [110]

Answer:

There are 40 milliliters of fruit juice in the bottle

Step-by-step explanation:

we know taht

20%=20/100=0.20

To find out the milliliters of fruit juice, multiply the volume of the bottle by the percentage of fruit juice in decimal form

so

200(0.20)=40\ ml

therefore

There are 40 milliliters of fruit juice in the bottle

8 0
3 years ago
The function H(t) = −16t2 + 60t + 95 shows the height H(t), in feet, of a projectile after t seconds. A second object moves in t
Dimas [21]
H(t) = -16t² + 60t + 95
g(t) = 20 + 38.7t

h(1) = -16(1²) + 60(1) + 95 = -16 + 60 + 95 = -16 + 155 = 139
h(2) = -16(2²) + 60(2) + 95 = -16(4) + 120 + 95 = -64 + 215 = 151
h(3) = -16(3²) + 60(3) + 95 = -16(9) + 180 + 95 = -144 + 275 = 131
h(4) = -16(4²) + 60(4) + 95 = -16(16) + 240 + 95 = -256 + 335 = 79

g(1) = 20 + 38.7(1) = 20 + 38.7 = 58.7
g(2) = 20 + 38.7(2) = 20 + 77.4 = 97.4
g(3) = 20 + 38.7(3) = 20 + 116.1 = 136.1
g(4) = 20 + 38.7(4) = 20 + 154.8 = 174.8

Between 2 and 3 seconds. 
The range of the 1st object is 151 to 131.
The range of the 2nd object is 97.4 to 136.1

h(t) = g(t) ⇒ 131 = 131

It means that the point where the 2 objects are equal is the point where the 1st object is falling down while the 2nd object is still going up. 
5 0
3 years ago
Read 2 more answers
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