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3 years ago

Demarco substitutes a value for x in the equation 2x = 4.

Mathematics

1 answer:

MA_775_DIABLO [31]3 years ago

6 0

Answer:

If both sides are equal

Step-by-step explanation:

If both sides are equal and are the same in both sides of the equation, than it is a solution.

For instance, the solution for 2x = 4, is x = 2 because 2(2) = 4 is 4 = 4.

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Four less than twice a number

kondor19780726 [428]

Answer:

as per ur ques if we take x as number then we get algebraic expression as

2x - 4

brainliest?

8 0

3 years ago

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The total number of? restaurant-purchased meals that the average person will eat in a? restaurant, in a? car, or at home in a ye

zmey [24]

Answer:

The number of restaurant-purchased meals eaten in a restaurant is 75, the number eaten in a car is 33 and the number eaten at home is 55.

Step-by-step explanation:

Suppose, the number of meals eaten in a restaurant is $x$ , in a car is $y$ and at home is $z$

The total number of meals eaten in a restaurant, in a car or at home is given as 163. So, the first equation will be......

$x+y+z=163 .............................(1)$

The total number meals eaten in a car or at home exceeds the number eaten in a restaurant by 13. So, the second equation will be......

$y+z=x+13 ................................(2)$

Twenty more restaurant-purchased meals will be eaten in a restaurant than at home. So, the third equation will be......

$x= z+20..................................(3)$

First, substituting equation (2) into equation (1), we will get........

$x+(x+13)=163\\ \\ \Rightarrow 2x+13=163\\ \\ \Rightarrow 2x=163-13=150\\ \\ \Rightarrow x=\frac{150}{2}=75$

Now plugging this $x=75$ into equation (3), we will get......

$75=z+20\\ \\ \Rightarrow z=75-20= 55$

Plugging $x=75$ and $z=55$ into equation (1) .........

$75+y+55=163\\ \\ \Rightarrow y+130=163\\ \\ \Rightarrow y=163-130=33$

So, the number of restaurant-purchased meals eaten in a restaurant is 75, the number eaten in a car is 33 and the number eaten at home is 55.

8 0

3 years ago

WILL MARK BRAINLYEST ❤️❤️❤️❤️❤️❤️

Valentin [98]

Answer:

$108.19

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 3.6%/100 = 0.036 per year.

Solving our equation:

P = 119.88 / ( 1 + (0.036 × 3)) = 108.19494584838

P = $108.19

The principal investment required to get a total amount, principal plus interest, of $119.88 from simple interest at a rate of 3.6% per year for 3 years is $108.19.

Hope this helps!

6 0

3 years ago

neonofarm [45]

Answer:

3 kids and 5 adults

Step-by-step explanation:

3×5.5 = 16.5

5×7.25= 36.25

16.5+36.25= 52.75

4 0

3 years ago

What is the product of 48.65(6.2)? A 30.163 B296.77 C301.63 D306.49

love history [14]

The required solution is 301.63.

Option (C) is correct.

It is required to find the product of the given expression.

<h3>What is arithmetic?</h3>

The branch of mathematics dealing with the properties and manipulation of numbers. a science that deals with the addition, subtraction, multiplication, and division of numbers. Fractions, decimals, percentages, fractions, square root, exponents, and other arithmetic operations are used to achieve mathematical simplifications.

Given that:

The given expression is

48.65(6.2)

It is to find the product of the given expression we get

48.65*6.2

=301.63

Hence, the required solution is 301.63.

Learn more about arithmetic here:

brainly.com/question/28280038

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6 0

2 years ago

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