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Mrac [35]
3 years ago
8

-4x + 7 = -21 whats x AHSAJ I NEEDD HELPPP

Mathematics
2 answers:
yKpoI14uk [10]3 years ago
7 0

Answer:

-4x+7= -21

-4x= -21-7( this positive 7 will change to negative as we take in other side )

-4x = -28

Both the negative will be cancelled

4x = 28

x = 28/4

X = 7

therefore the X value is 7

Arturiano [62]3 years ago
4 0

- 4x+7=-21

-4x=-21-7

-4x=-28

x=7

Step-by-step explanation:

Like terms are collected first

The +7 moves to the other side of the equality sign making its sign negative (-7)

Two negatives makes a positive but the sign remains negative (when you have two numbers with a negative sign you sum them up but the sign of the sum remains negative)

Then divide both side by the coefficient of x which is - 4

-4x/4 =-28/4

The negative signs cancel out

x=7

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replace f(x) with y
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h(x)=6x+1
replace
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h^-1(x)=(x-1)/6


D is answer
8 0
3 years ago
Read 2 more answers
Solve the equation. <br><br> -4y+3 = -4(y+6)
boyakko [2]

Answer:

-4y+3=-4(y+6)

-4y+3=-4y+24

-4y+4y=24-3

0=21

7 0
3 years ago
A 50 ft kite string is flying on the beach above an umbrella. You are holding the end
ExtremeBDS [4]

Answer:

The height of the kite is 48.54 feet

The angle of elevation is 76.11°

Step-by-step explanation:

To find the height of the kite, we can use the Pythagoras' theorem in the triangle created by the length of the string (hypotenuse), the height of the kite and the distance to the umbrella (catheti).

Then, we have:

50^2 = 12^2 + height^2

height^2 = 2500 - 144

height^2 = 2356

height = 48.54 ft

So the kite is 48.54 feet high in the air.

The angle of elevation can be calculated using the cosine relation:

cos(angle) = 12 / 50

cos(angle) = 0.24

angle = 76.11°

3 0
3 years ago
Part A.) in another baseball game division, one team had a winning percentage of 0.444... what fractions of the game did the tea
sattari [20]

Answer:

4/9

Step-by-step explanation:

0.4444... can be written as a geometric series with first term 0.4 and common ratio 0.1.  Each new digit is 0.1 times the previous digit.

                               0.4

Then 0.4444... = ------------ = 0.4/0.9 = 4/9

                             1 - 0.1

You may check this result by dividing 4 by 9 on a calculator.

4 0
4 years ago
Which pair of numbers have a GCF of 2? Choose all answers that are correct. A. 10 and 2 B. 4 and 6 C. 6 and 12 D. 2 and 24
il63 [147K]
A.
<span>GCF(10; 2) = 2  /</span>factors of 10: 1, 2, 5, 10; factors of 2: 1, 2/

B.
GCF(4; 6) = 2  /factors of 4: 1, 2, 4; factors of 6: 1, <span>2, 3, 6/</span>

C.
GCF(6; 12) = 6  /factors of 6: 1, 2, 3, 6; factors of 12: 1, <span>2, 3, 4, 6, 12/</span>

D.
GCF(2; 24) = 2   <span>/factors of 2: 1, 2; factors of 24: 1, <span>2, 3, 4, 6, 8, 12, 24/</span>

</span>Answer: A, B and D.


8 0
3 years ago
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