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3 years ago

What is the mistake in this problem?

Mathematics

1 answer:

Oksana_A [137]3 years ago

4 0

You didn't multiply the 3 by 4 on step number 3. Your new problem should have been -4x +12=x + 4. You then move the variable term by adding 4x to each side. Your new problem is 12=5x + 4. Then, remove the constant by subtracting 4 on each side. Your new problem is 8=5x. Your answer is x=1 3/5 or 1.6

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Find the function h(x) = f(x) - g(x) if f(x)=3^x and g(x) = 3^2x - 3^x

Mashcka [7]

Step-by-step explanation:

h(x)=f(x)-g(x)
h(x)=3^x-3^2x-3^x
h(x)=3^x(1-3²-1)
h(x)=3^x(-9)
h(x)= -27^x

hope it helps.

4 0

3 years ago

Evaluate the following expressions for a = -3,b=2,c=5

Ksju [112]

Hey!

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We know that (a = -3), (b = 2), (c = 5), and (d = -4).

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Solution #1:

$=\frac{a-4b}{3c+2d}$

$=\frac{(-3) - 4(2)}{3(5) + 2(-4)}$

$=\frac{(-3) - 8}{15 +( -8)}$

$=\frac{-11}{7}$

≈ 1.57

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Solution #2:

= a - 4b / 3c + 2d

= (-3) - 4(2) / 3(5) + 2(-4)

= (-3) - 8 / 15 + (-8)

= (-3) - 0.53 + (-8)

= (-3.53) + (-8)

= -11.53

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Solution #1 Answer: 1.57

Solution #2 Answer: -11.53

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Hope This Helped. Good Luck! Brainly is here to help :)

6 0

3 years ago

What is 5/9 of 243??

kvasek [131]

Answer:

135

Step-by-step explanation:

6 0

3 years ago

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One number added to three times another number is 24. Five times the first number added to three times the other number is 36. F

ratelena [41]

$x+3y=24\\
5x+3y=36\\\\
x+3y=24\\
\underline{-5x-3y=-36}\\
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x=3\\\\
3+3y=24\\
3y=21\\
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$

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3 years ago

Joe earns $9 per hour. He worked x hours on both Wednesday and Friday, and 8 hours on both Tuesday and Saturday. Write an expres

Tamiku [17]

To find the total amount earned, you need to multiply the number of hours worked by the pay rate. Joe worked x hours for 2 days. That’s 2x hours. He worked 8 hours for 2 days. That’s 8(2), or 16 hours. The total number of hours he worked is 2x + 16. He gets paid $9/hour, so an expression for the total amount earned is 9(2x + 16), or 18x + 144.

8 0

4 years ago

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