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antiseptic1488 [7]
3 years ago
15

What is the solution of x-7= ir+14,

Mathematics
1 answer:
weqwewe [10]3 years ago
3 0

Answer:

x=12

Step-by-step explanation:

put the x at one side and the numbers ar the other

5/2x-3/4x=14+7

10/4x-3/4x=21

7/4x=21

7x=84

x=12

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Help me out with these questions please? 5+ 3x = 8 and also 3x - 6 =9
ohaa [14]

Answer:

1st problem-X=1, 2nd problem-X=3

sorry if this isn't right..

8 0
3 years ago
Read 2 more answers
Translate the sentence into an equation or formula.
inn [45]
4 times the sum of f and g: 4(f+g)
6 times g: 6g

So equation : 4(f+g) = 6g
6 0
3 years ago
For ΔABC, ∠A = x + 30, ∠B = 2x - 4, and ∠C = 4x. If ΔABC undergoes a dilation by a scale factor of 1 2 to create ΔA'B'C' with ∠A
Marina86 [1]
ABC
Solve for x
x + 30 + 2x - 4 + 4x = 180 All triangles have 180°. collect like terms.
7x + 26 = 180 subtract 26 to both sides.
7x = 154 Divide by 7
x = 154/7
x = 22
A = x + 30 = 22 + 30 = 52
B = 2x - 4 = 2(22) + 30 = 44 - 4 = 40
C = 4x = 4*22 = 88

Check
<A + <B + <C = 180
<52 + <40 + <88 = 180°
180 = 180

It checks and we are done with this triangle.

A'B'C' 
2x + 8 + x + 18 + 5x - 22 = 180 Collect the like terms.
8x + 4 = 180 Subtract 4 from both sides.
8x = 180 - 4
8x = 176 Divide by 8
x = 176 / 8
x = 22
 
A' = 2x + 8
A' = 2(22) + 8 = 44 + 8 = 52
B' = x + 18 = 22 + 18 = 40
C' = 5x - 22 = 5*22 - 22 = 110 - 22 = 88

Conclusion
A = A'
B = B'
C = C'

All three angles of one triangle are equal to all three angles of the other. So by AA the two triangles are similar.

Comment
Note: the dilation of 12 has nothing to do with this answer. If you were asked about similarity of sides then the 12 would be something to do with the problem. 


3 0
4 years ago
What is the answer for AC =
Triss [41]

Answer:

The length of AC is 2.33 units.

Step-by-step explanation:

You have to use Tangent Rule, tanθ = opposite/adjacent :

\tan(θ)  =  \frac{oppo.}{adj.}

Let oppo. = AC,

Let adj. = BC = 5,

Let θ = 25°,

\tan(25)  =  \frac{ac}{5}

ac = 5 \tan(25)

ac = 2.33 \: units \: (near.hundredth)

4 0
3 years ago
(07.02)
s344n2d4d5 [400]
C two
Hope this helps
8 0
3 years ago
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