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guapka [62]
4 years ago
14

Help meeeeeeeeeeeeeeeeeeeeeeee

Mathematics
2 answers:
nexus9112 [7]4 years ago
6 0

12. Collect terms.

... = x(1/2 - 2 1/4) + (-7 +2) = (-1 3/4)x -5 . . . . matches a)

13. Undo what is done to x. Perform the operations on both sides of the equation.

... 3x -4 = -22 . . . . multiply by -2 to undo multiplication by -1/2

... 3x = -18 . . . . . . . add 4 to undo subtraction of 4

... x = -6 . . . . . . . . . divide by 3 to undo the multiplication by 3

The value of x is -6.

MakcuM [25]4 years ago
5 0
This will be less confusing if you look at the attached image.

12) a is correct.
first solve the expression and then find one that is the same in the options. To do this combine like terms.

13) x=6
first solve the parenthesis by multiplying the fraction in front by both numbers inside. Then subtract the 2 from both sides divide to separate the x and then you get x=6

work shown in image
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Use the scale of 1cm=45 km
alex41 [277]

Answer:

d = 7.4 cm is the distance between the two cities on the map.

Step-by-step explanation:

Let d = the distance measured on the map in centimeters (cm) between any two locations and let D be the actual distance in kilometers (km) between these same two locations.

Since the scale on the map is 1 cm = 45 km, then the ratio of the distance on the map to the actual distance is equal to 1cm/45 km; therefore the quotient of any measured distance d on the map divided by the corresponding much longer actual distance D would have to maintain (equal) this same ratio; In other words, we can set up the following proportion to solve for d given the actual distance D = 333 km as follows:

1 cm/45 km = d/D

Substituting, we get:

1 cm/45 km = d/333 km

d/333 km = 1 cm/45 km

(d/333 km)(333 km) = (1 cm/45 km)(333 km)

d = (333 km/45 km)(1 cm)

d = 7.4 cm is the distance between the two cities on the map.

Check:

1 cm/45 cm = d/333 km

1 cm/45 cm = 7.4 cm/333 km

1 cm/45 cm = 1 cm/45 km (Therefore, the distance ratio of the map has been maintained

3 0
2 years ago
9y^-5/3y^2r^-3 what is the answer in a fraction​
allsm [11]

Answer:

3r^3/y^7.

Step-by-step explanation:

9y^-5 / 3y^2r^-3

9 / 3 = 3

y ^-5 / y^2 = y^-7 = 1 / 7y

1 / r^-3 = r^3

So the answer is 3r^3/y^7.

8 0
4 years ago
NEED HELP FAST PLZ!!
Rudik [331]

Answer:

no clue

Step-by-step explanation:

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8 0
3 years ago
(5x-7)+(6+33)<br> solve the equation
Vinil7 [7]

Answer: 5x + 32

Step-by-step explanation:

4 0
3 years ago
The answer I don’t know how to do this promem
cupoosta [38]

Answer: if you show us the whole picture, maybe we will be able to solve it?


Step-by-step explanation:

just retake the picture so i can see the whole thing

8 0
3 years ago
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