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2 years ago

4 (2x + 5) = 52 Solve the equation on the worksheet. Write the number that is equal to x.

Mathematics

1 answer:

uysha [10]2 years ago

8 0

Answer:

x = 4

Step-by-step explanation:

4(2x + 5) = 52 ( divide both sides by 4 )

2x + 5 = 13 ( subtract 5 from both sides )

2x = 8 ( divide both sides by 2 )

x = 4

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Haley is responsible for buying a week's supply of food and medication for the pigs and cows at a local co-op. The food and medi

vesna_86 [32]

Answer:

c- 75

p- 25

Step-by-step explanation:

so haley has 2450 in total and the pig cost 25 so if the cows are 3 times more than the pigs . so the cows stuff cost 75 each so now multiply 75 x 30 = 2250 and the pigs cost 25 each multiply 25 x 8 = 200 then add 2250 + 200 = 2450 which means haley has the exact money to pay the stuff. haley spends 75 on each cow.

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3 years ago

An aircraft has a maximum of 30 first class seats and 220 economy seats.

Sidana [21]

Answer:

$x\leq 30$

$y\leq 220$

$240x+120y$

Step-by-step explanation:

Let

x ----> the number of first class seats

y ----> the number of economy class seats

we know that

An aircraft has a maximum of 30 first class seats

$x\leq 30$

An aircraft has a maximum of 220 economy seats

$y\leq 220$

A flight will be cancelled if the money taken for the seats is less than $28,800.

$240x+120y$

therefore

Three inequalities that represent the situation are

$x\leq 30$

$y\leq 220$

$240x+120y$

8 0

3 years ago

A patient is given a 100-milligram dosage of a drug that decays exponentially at a rate of 11% per hour. The doctor wants to kno

I am Lyosha [343]

Answer:

This is an example of exponential decay (somewhat similar to half-life).

If it decays at 11% per hour we can calculate its half-life by this formula:

half life = [ time • ln (2) ] ÷ ln (beginning amount ÷ ending amount)

where "ln" means natural log

half life =[ 1 hour * .69315] / ln (100 / 89)

half life =[.69315] / ln (1.1235955056)

half life =[.69315] / 0.11653381624

half life = 5.9481 hours

We need "lambda" "λ" (the decay constant) which equals

λ = ln(2) / half-life = .693147 / 5.9481 = 0.1165325062

Now we need a formula for the time required:

time = ln (Nt ÷ N0) ÷ -λ where No = beginning amount (100 milligrams) Nt = ending amount (15 milligrams)

time = ln (15 ÷ 100) ÷ -0.1165325062

time = ln (.15) / -0.1165325062

time = -1.8971199849 / -0.1165325062

time = 16.2797492885 hours

Source: https://www.1728.org/halflif2.htm

Step-by-step explanation:

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3 years ago

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Helga [31]

Answer:

8 3/ 4

Step-by-step explanation:

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3 years ago

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Answer:

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Step-by-step explanation:

There are 2 points of intersection

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