All categories

3 years ago

40 POINTS

Mathematics

2 answers:

scoray [572]3 years ago

5 0

Answer:

4 red and 3 blue

Step-by-step explanation:

Let red candy weighs r and blue candy weighs b

Total weight is 7 pounds:

r + b = 7

Red costs $1.5 per pound, blue costs $2 per pound and total cost is $12

1.5r + 2b = 12

We have two equations.

Solve by elimination, double the first equation and subtract the second equation from the first:

2r + 2b = 14
1.5r + 2b = 12

Subtract and solve for r:

2r - 1.5r = 14 - 12
0.5r = 2
r = 4

Find b using the first equation:

b = 7 - r
b = 7 - 4 = 3

The answer is:

Mike had 4 pounds of red and 3 pounds of blue candies.

Evgesh-ka [11]3 years ago

4 0

Answer:

<h2>Solution :-</h2>

Let the red candy be r and blue candies be b

r + b = 7(EQ 1)

1.5r + 2b = 12

2r + 2b = 14

Now,

(1.5r + 2b = 14) = (2r + 2b + 12)

2r - 1.5r = 14 - 12

0.5r = 2

r = 2/0.5

r = 4

Using equation 1

4 + b = 7

4b = 7

b = 7 - 4

b = 3

$\\$

You might be interested in

Which statement best describes g(x) = 3x + 6 - 8 and the parent function f(x) = } ?

kumpel [21]

Answer:

In general gf(x) is not equal to fg(x)

Some pairs of functions cannot be composed. Some pairs of functions can be composed only for certain values of x.

Only with they can be composed some values of x are the ranges of g(x) and f(x) are the same, and their domains are also the same. Or else lies inside it.

Step-by-step explanation:

g(x) = 3x + 6 - 8, f(x) = √x.

The domain of a composed function is either the same as the domain of the first function, or else lies inside it

The range of a composed function is either the same as the range of the second function, or else lies inside it.

Or vice versa

Now only positive numbers, or zero, have real square roots. So g is defined only for numbers

greater than or equal to zero. Therefore g(f(x)) can have a value only if f(x) is greater than or

equal to zero. You can work out that

f(x) ≥ 0 only when x ≥3/2

3 0

3 years ago

A bag contains the two tiles shown below. One tile is drawn at random from the bag. The tile is returned to the bag and again a

BaLLatris [955]

From the given ((E) (U)), the sample space for the experiment is {EE, EU, UE, UU}. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

6 0

4 years ago

Find two numbers between 1.4142133 and 1.41422

Naddik [55]

Hey there! I'm happy to help!

To find the number halfway between two numbers, you simply add them and then divide by two.

1.4142133+1.41422=2.8284333

2.8284333/2=1.41421665

That is one number in between these two. Now, we can find the number in between the middle number and the second number. This is another number in between our two numbers.

(1.41421665+1.41422)/2=1.414218325

You could keep on doing this and find tons of numbers in between these two.

Therefore, two numbers between 1.4142133 and 1.41422 are 1.41421665 and 1.414218325.

Have a wonderful day! :D

6 0

3 years ago

Patrick built a robot that is 0.8 meters tall. Adelaide built a robot that is 2 feet and 9 inches tall. Who has the taller robot

Ugo [173]

Answer:

Adelaide's robot is 83.82 centemetres = 0.84 meters

Step-by-step explanation:

2 feet = 60.96cm + 9 inches = 22.86cm therefore Adelaide's robot is taller