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Sladkaya [172]
3 years ago
6

How many solutions is 8x+47=8(x+5)

Mathematics
2 answers:
expeople1 [14]3 years ago
7 0
8x + 47 = 8x + 40

No solutions  (the above 2 expressions cannot be equal for any value of x)
Morgarella [4.7K]3 years ago
6 0
8x+47=8(x+5)

8x+47=8x+40
8x+47-47=8x+40-47
8x=8x-7
8x-8x=8x-7-8x
0=-7
there is no solutions 
Hope this helps :)
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For a segment of a radio show , a disc jockey can play 7 records . If there are 9 records to select from , in how many ways can
ale4655 [162]

Answer: 72

Step-by-step explanation:

From the question, we are informed that a disc jockey can play 7 records and that there are 9 records to select from for a particular segment of a radio show.

The number of ways that the program for the segment be arranged will be:

= 9! / 7!

= (9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1) / (7 × 6 × 5 × 4 × 3 × 2 × 1)

= 9 × 8

= 72

6 0
3 years ago
3. Mateus recebe a visita do seu avô Pedro a cada 15 dias. João, o tio dele, o visita a cada 100
maxonik [38]

Answer:

Este acontecimento se repetirá 300 dias depois.

Step-by-step explanation:

Quando os eventos se repetirão no mesmo dia?

Cada evento tem uma frequência.

Eles ocorrem simultaneamente a cada x dias, e x é dado pelo MMC(Mínimo Múltiplico Comum) entre as frequência.

Neste problema:

A cada 15 dias o avô visita.

A cada 100 dias o tio visita.

A cada 12 dias vai à praia.

Quantos dias depois este acontecimento se repetirá?​

Os três no mesmo dia vão se repetir após x dias, em que x é dado pelo MMC de 15, 100 e 12

MMC de 15, 100 e 12

Fatorando simultâneamente estes valores:

15 - 100 - 12|2

15 - 50 - 6|2

15 - 25 - 3|3

5 - 25 - 1|5

1 - 5 - 1|5

1 - 1 - 1

Então:

mmc(15,100,12) = 2*2*3*5*5 = 300

Este acontecimento se repetirá 300 dias depois.

3 0
3 years ago
A pre-image is dilated by a scale factor of 4. Which statement about the pre-image and its image is true?
nikitadnepr [17]

Answer:(c)

Step-by-step explanation:

8 0
3 years ago
In the equation '3x-3=9, transposing -3RHS,we get 3x=9​
Gemiola [76]

\sf\purple{The\:value\:of\:x\:is\:4.} ✅

<u>Step-by-step </u><u>explanation</u>:-

3x - 3 = 9 \\ ➡ \: 3x = 9 + 3 \\ ➡ \: x =  \frac{12}{3}  \\ ➡ \: x = 4

<u>To </u><u>verify</u>:-

3 \times 4 - 3 = 9 \\ ➵ \: 12 - 3 = 9 \\ ➵ \: 9 = 9 \\ ➵ \: L.H.S.=R. H. S

Hence verified.

\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Happy\:learning.}}}}}∘

5 0
3 years ago
F(0)=2, f(2)=4, linear equation?
Solnce55 [7]
If you separate those into points (0,2) and (2,4) then figure out the slope by using the equation y2-y1 divided by x2-x1, you'll get 4-2 over 2-0 which gives you 2/2 or 1. You found the slope so you can plug that into the slope-intercept equation y-y1=m(x-x1). For you, it'd be y-2=1(x-0), you end up with the equation y=x+2.
7 0
4 years ago
Read 2 more answers
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