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Lena [83]
3 years ago
5

Work out the value of 3x + 2y then x = 5 and y = 4

Mathematics
1 answer:
Sergio [31]3 years ago
5 0

the value of 3x +2y if x=5 and y=4 is 23
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Roger has 2 1/2 cups of butter. A recipe for a loaf of bread requires 3/4 cup of butter. How many loaves can roger bake?
Alchen [17]

In order to calculate the number of loaves Roger can bake, we should calcculate how many times 3/4 (required butter for one loaf of bread) is included in 2 1/2 (amount of butter Roger has).

2 1/2=4/2+1/2=5/2

(5/2)/(3/4)=5*4/2*3=20/6=3,33

Roger can bake 3 loaves of bread.

3 0
3 years ago
The sum of (-9) and a number (n) is multiplied by 1/2. the result is 20. what is the number?
OLga [1]

Answer:

Step-by-step explanation:

1/2(-9+n)=20

n=40+9

n=49

6 0
3 years ago
Read 2 more answers
A typical lap around a track in the United States has length of 440 yards. How many lap would need to be complete to run a mile?
g100num [7]

4 laps because a mile is 1,760 yards and the 440 laps need to be divided into 1,760 so 1,760/440 is 4 so four laps are needed to complete a mile

3 0
3 years ago
How many solutions for linear equation 3x + 5y = 25 can be found so that −20 < y < 10, and x is an integer?
ch4aika [34]

Answer:

50

Step-by-step explanation:

3x = 25 - 5y

-100 < 5y < 50

-50 < -5y < 100

-25 < 25 - 5y < 125

-8.333 < x < 41.667

41+8+1 = 50

5 0
3 years ago
Help. The problem is in the picture
inn [45]

Answer:

The answer to your question is y = 2/3x + 4

Step-by-step explanation:

Data

Equation     y = 2/3 x + 5

New line = ?

Process

Two lines are parallel if the have the same slope. The slope is the coefficient of the x.

1.- Get the slope of the original line

                y = 2/3x + 5

   slope = 2/3

2.- Two find the equation of a parallel line we need to point I will use (0, 4)

Use the point slope formula

               y - y1 = m(x - x1)

               y - 4 = 2/3(x - 0)

               y - 4 = 2/3 x

              y = 2/3x + 4

6 0
3 years ago
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