2 years ago

Pleaseeee helpp which one is it and whyyyy!!!!

Mathematics

1 answer:

Elza [17]2 years ago

7 0

Answer:

answer is A

Step-by-step explanation:

You might be interested in

Yesterday the temperature at noon was 11.4°F by midnight the temperature had decreased by 15.7° what was the temperature at midn

lina2011 [118]

11.4 - 15.7 = -4.3. The temperature at midnight is -4.3<span>°F.

Hope this helps! Have a great day :)</span>

3 0

2 years ago

Read 2 more answers

At a farmers market, Samuel bought 3 pounds of apples for x dollars per pound and 2 bags of spinach for y dollars each. The next

andre [41]

Answer:

A. 8x+5y

Step-by-step explanation:

First day: 3x+2y

Second day: 5x+3y

Add both expressions together.

(3x+2y)+(5x+3y) =

= 3x+2y+5x+3y=8x+5y

Hope this helps!

If not, I am sorry.

6 0

1 year ago

Anna played tennis for 2 ¼ hours on Saturday and 1 ⅘ hours on Sunday. How many hours did she play tennis during the weekend?

Aleonysh [2.5K]

Answer:

The answer is $\frac{9}{20}$

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

How many solutions does the system have? You can use the interactive graph below to find the answer. 4x-2y=8 2x+y=2 4x−2y=8 2x+y

Tju [1.3M]

Answer:

Step-by-step explanation:

We have the following system

$\left[\begin{matrix} 4 & -2 \\ 2 & 1 \end{matrix}\right]x =\left[\begin{matrix} 8 \\ 2 \end{matrix}\right]$

The number of solutions depend on the determinant of the matrix of the system. If the determinant is different from 0, then it has one unique solution, if it 0 then it has infinite solutions.

Note that the determinant of a matrix

$\left[\begin{matrix} a & b \\ c & d \end{matrix}\right]$ is ad-bc. So in our case we have 4*1-(-2)*2 = 8 which is not 0. Then the system has an unique solution.

6 0

2 years ago

How many ways can a president, vice president, and treasurer be selected from a group of 40 students?

Nimfa-mama [501]

Answer:

Step-by-step explanation:

6 0

3 years ago