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Umnica [9.8K]
4 years ago
5

Ken is thinking of a number. Nine more than the product of 4 and the number is 73. Find Ken number

Mathematics
1 answer:
Sliva [168]4 years ago
7 0
----------------------------------------
Define x :
----------------------------------------
Let the number be x.

----------------------------------------
Construct equation:
----------------------------------------
<span>Nine more than the product of 4 and the number is 73
</span>⇒4x + 9 = 73

----------------------------------------
Solve for x:
----------------------------------------
4x + 9 = 73
4x = 73 -9
4x = 64
x = 16

----------------------------------------
Answer: Ken's number is 16.
----------------------------------------
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Can someone help thank you
mestny [16]

Answer:

number 3 is a function, the other one is not a function.

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8 0
2 years ago
Isabel found 54 coins at the bottom of her backpack. when she looked, she noticed they were only nickels and dimes. Isabel count
goblinko [34]

She had 23 nickles and 31 dimes

Step-by-step explanation:

The given is:

  • Isabel found 54 coins at the bottom of her backpack
  • She noticed they were only nickels and dimes
  • Isabel counted the coins and they totaled $4.25

We need to find how many nickels and dimes she had

Assume that the number of nickels is x and the number of dimes is y

∵ Isabel had 54 coins

∵ The number of nickels is x

∵ The number of dimes is y

∴ x + y = 54 ⇒ (1)

∵ 1 nickle = 5 cents

∵ 1 dime = 10 cents

∵ The coins totaled $4.25

- Change the dollars to cents

∵ 1 dollar = 100 cents

∴ $4.25 = 4.25 × 100 = 425 cents

- Multiply the number of nickles by 5 and the number of dimes

  by 10, add the two products and equate the sum by 425

∴ 5x + 10y = 425 ⇒ (2)

Now we have a system of equations to solve it

Multiply equation (1) by -10 to eliminate y

∵ -10x - 10y = -540 ⇒ (3)

- Add equations (2) and (3)

∴ -5x = -155

- Divide both sides by -5

∴ x = 23

Substitute the value of x in equation (1) to find y

∵ 23 + y = 54

- Subtract 23 from both sides

∴ y = 31

She had 23 nickles and 31 dimes

Learn more:

You can learn more about the system of equations in brainly.com/question/6075514

#LearnwithBrainly

6 0
3 years ago
An academic adviser wanted to investigate the amount of money spent by students on textbooks. She randomly sampled 25 students a
ladessa [460]

you should try a bar graph!!!

8 0
3 years ago
Juan pago $50.00 pesos por 3 cajas de paquetes y 5 cajas de clavos, mientras que Pedro compró 5 cajas de taquetes y 7 cajas de c
Diano4ka-milaya [45]
A) confusión al encontrar la suma de la diferencia de precios
B ) dos
C ) 50 dividida 8, 74 dividida 12


espero que esto haya ayudado!
te agradecería que me dieras un gracias y brainliest (:
6 0
2 years ago
Solve<br> y=-x2+2x+10<br> y=x+4
Marizza181 [45]
Y=10
explanation:
-4•2= -8
2•4=8
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3 years ago
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