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Amiraneli [1.4K]
2 years ago
7

-x + 4 = -9 Solve the equation.

Mathematics
2 answers:
Alex_Xolod [135]2 years ago
6 0

Answer:

-13

Step-by-step explanation:

Subtract  4  from both sides of the equation

+ 4 = − 9

+ 4 − 4 =− 9 − 4

Simplify

Solution:

= − 1 3

Gennadij [26K]2 years ago
6 0

Answer:

x = -13

Step-by-step explanation:

I hope it helps you, sorry if it is wrong.

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1. (section 2.1) Bungee jumping: Jimmy jumped off the Tallahatchie Bridge, 100 ft above
Tems11 [23]

Answer:

18.4 ft per second.

Step-by-step explanation:

Bungee jumped off the Tallahatchie Bridge, which is 100 ft above the water surface.

And after 5 seconds he was at 8 ft above the water surface.

Therefore, in total 5 seconds, he descends by total ( 100 - 8 ) = 92 ft altitude.

Hence, the average rate of change of his altitude is given by  

\frac{\textrm{Total altitude change}}{\textrm{Total time taken}} = \frac{92}{5} =18.4 feet per seconds. (Answer)

7 0
3 years ago
ADEF is a dilation of AABC by a scale factor of. Which of the following
Artemon [7]

Answer:

c

Step-by-step explanation:

A scale drawing is a reduced form in terms of dimensions of an original image / building / object

the scale drawing is usually reduced at a constant dimension

scale of the drawing = original dimensions / dimensions of the scale drawing

DEF should be three times as big as ABC

AB = 5 ; DE = 5 x 3 = 15

AC = 3 ; DF = 3x 3 = 9

BC = 4 ; EF = 4 X 3 = 12

the options that correspond to this is option c

7 0
3 years ago
Please Help?
posledela

Answer:

See explanation

Step-by-step explanation:

The place to begin in attempting to solve a quadratic equation is to try to factorize it. If it can not be factorized, then look at the side of equation that contains the variable (x,b,m,n and so on). If that side is a perfect square, try to take square root of both sides.

Also, if the coefficient of the squared term in the equation is 1 and the coefficient of the middle term bearing the variable is an even number, then you can attempt to use completing the square method. Formula method can be adopted as a last resort.

x^2 -4x + 4 =0 can be solved by factorization

X(x-2) - 2(x-2) =0

Hence;

(x-2) (x-2) =0

x= 2 (twice)

(2x-2)^2 = 4 can be solved by taking square root

√[(2x-2)^2] = √4

2x-2 = 2

x= ±2

x^2 + 6x - 11 = 0 can be solved by completing the square

(x + 3)^2 = 11 + 3^2

(x + 3)^2 = 20 taking square root of both sides

x + 3 = ±√20

x + 3 = ±2√5

x= -3 ±2√5

2x^2 - x + 5 = 0 can be solved by formula method

Using

x= -b±√b^2 - 4ac/2a

a= 2, b = -1, c= 5

x= 1 ± √1 - 40/4

x= 1 ± √-39/4

x= 1 ± 39i/4

5 0
3 years ago
PLS HELP TIMEDDDDDD I NEED HELP
Dafna1 [17]

Answer:

Option 3:  81 pi cu. in

Step-by-step explanation:

5 0
3 years ago
Please help me please please I really need help please please
Tom [10]
30 + .15x = 20 + .20x
10 = .05x
200= x
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