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Novay_Z [31]
4 years ago
13

Sarah’s age increased by twice bob’s age is 42

Mathematics
2 answers:
mr Goodwill [35]4 years ago
6 0
Since Sarah’s age is 2x of Bob’s age (which is 42) Sarah is 84.
Pavel [41]4 years ago
6 0

Hello there! The answer to your question is 'Sarah is 21 years old.'


Need an Explanation?:

So twice Sarah's age is equal to bob's age, which is 42. To solve, set up an equation that looks like this: (s = Sarah's age)

2s = 42

Solve for S. To do this, divide both sides of the equation by 2.

You get s = 21.

This means Sarah is 21 years old.

<em>I hope this helps, and have a great day! Please don't hesitate to ask if you need more help with this specific question! </em>




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How to translate the following phrase into an algebraic expression nine times the difference of 5 and y
julia-pushkina [17]

Answer:

9(5+y)

Step-by-step explanation:

you have to do 5 plus y and whatever you put outside of the brackets you will multiply the answer by that number

8 0
3 years ago
What is the answer of 9 strikes to 3 inning
Semenov [28]
It it b. this is true
7 0
4 years ago
The number of bacteria in a refrigerated food product is given by N ( T ) = 22 T 2 − 123 T + 40 , 6 &lt; T &lt; 36 , where T is
antoniya [11.8K]

Answer:

N(T(t)) = 1408t^2 - 385.6t - 105.52

Time for bacteria count reaching 8019: t = 2.543 hours

Step-by-step explanation:

To find the composite function N(T(t)), we just need to use the value of T(t) for each T in the function N(T). So we have that:

N(T(t)) = 22 * (8t + 1.7)^2  - 123 * (8t + 1.7) + 40

N(T(t)) = 22 * (64t^2 + 27.2t + 2.89) - 984t - 209.1 + 40

N(T(t)) = 1408t^2 + 598.4t + 63.58 -  984t - 169.1

N(T(t)) = 1408t^2 - 385.6t - 105.52

Now, to find the time when the bacteria count reaches 8019, we just need to use N(T(t)) = 8019 and then find the value of t:

8019 = 1408t^2 - 385.6t - 105.52

1408t^2 - 385.6t - 8124.52 = 0

Solving this quadratic equation, we have that t = 2.543 hours, so that is the time needed to the bacteria count reaching 8019.

4 0
4 years ago
Find the inverse of the function:<br>f(x) = 3x + 6<br>​
natta225 [31]

Answer:

      x = -2

Step-by-step explanation:

Pull out like factors :

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Solve :    -3   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Solve  :    x+2 = 0

Subtract  2  from both sides of the equation :

                     x = -2

4 0
3 years ago
One fourth of a number q is 3 more than three times a number w. Solve for q.
Butoxors [25]
1/4q = 3w + 3...multiply both sides by 4
q = 4(3w + 3)
q = 12w + 12 <===
5 0
3 years ago
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