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GREYUIT [131]
3 years ago
7

Can some one please tell me the answerto this 2(x+4)-1=2x+7​

Mathematics
1 answer:
dangina [55]3 years ago
7 0

Answer:

2(x+4)-1=2x+7 is true for everything

Step-by-step explanation:

2(x+4)-1

2(x+4)

=2x+2*4

=2x+8

=2x+8-1

=2x+7

2x+7=2x+7

2x=2x

2x-2x=2x-2x

0=0

true for all x

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3×-7 equivalent expressions A. -21 B. 4 C. -4 D. 21
USPshnik [31]

Answer:

-21

Step-by-step explanation:

3x7=21 and a negative x a positive is always negative

6 0
2 years ago
a woman 1.65. tall stood 50m away from the foot of a tower,and observe that the angle of elevation of the top of the tower to be
ElenaW [278]

\sf\huge\underline{\star Solution:-}

\rightarrowLet the women's height be AE and distance between the women and tower be AC.

Also let the height of tower be BC.

\rightarrowNow, clearly it is forming a triangle.

So, in triangle ABC,

\rightarrow\sf{Tan50° \:= \: \frac{BC}{AC}}

\rightarrow\sf{1.19 \:= \: \frac{BC}{50}}

\rightarrow\sf{1.19 ×50\:= \: BC}

\rightarrow\sf{59.5m\:= \: BC}

\rightarrowHence, BC = 59.5m

So, BD(total height of the tower)\sf{ = \:BC+CD}

\sf{= \:59.5+1.65}

\sf{=\: 61.15m}

Therefore, total height of the tower =\sf\purple{ 61.15m.}

________________________________

Hope it helps you:)

5 0
2 years ago
Read 2 more answers
Solve 2x2 – 6x + 10 = 0 by completing the square.
Elanso [62]

Answer:

The answer is C.)

Step-by-step explanation:

I hope its help Please let me know.

3 0
3 years ago
Help this is due today, its one question
strojnjashka [21]
2389.51 times 6% equals 143.37 so 6% of his total sales equals 143.37.  6.25 times 37.5 equals 234.37  234.37+143.37 equals 377.745 so no it isn't enough. I hope this answer helps you
7 0
3 years ago
George earns $455 per week. George receives a 20% raise. How can George calculate his new weekly pay rate? Select all calculatio
Aleksandr [31]
It's only 455/x = 100 :))))))))
7 0
3 years ago
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