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Zarrin [17]
3 years ago
10

How do I work these out?

Mathematics
2 answers:
svetoff [14.1K]3 years ago
4 0

Answer:

Step 1: Make x the subject by moving all x terms to one side;

a)  4x-2x=7+3

Step 2; solve the linear equation

2x=10

x=10/2

x = 5

b) 2x-7x = -14-6

-5x = -20

x = -20/-5

x= 4

Hope this helps :) ! I'd apreciate if you'd mark my answer brainliest because ive been on the same rank for quite a loong time :(

Romashka [77]3 years ago
3 0

A) 4x-3=2x+7

Let's say x is 5

4x5-3 = 2x5+7

20-3 = 10+7

17=17

So x is 5

B) 2x+6 =7x -14

Let's say x is 4

2x4+6 = 7x4-14

8+6= 28-14

14=14

So x is 4

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19. h = ut - 1/2gt^2....u = 100, t = 1 4/5(or 9/5)...g = 6.4
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HELP ASAP!!!!!!!!PLEASE<br><br> Solve for x. Please explain. Thank you
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The values are x=8 and y=10

Explanation:

From the figure, we can see that the two quadrilaterals are similar.

Thus, by the property of quadrilateral, for similar quadrilaterals, their corresponding angles and sides are congruent. Thus, we have,

∠D = ∠S, ∠E = ∠P, ∠G = ∠R and ∠F = ∠Q

Also, GF = QR and DE = PS

Where QR = 2x-4 and ∠D = 102°, ∠G = 84° and ∠F = 68°, ∠Q = (6y+x)°

Hence, to determine the value of x for the side QR, we have,

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Substituting x in the angle Q to determine the value of y.

Thus, we have,

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Thus, the value of y is 10.

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