All categories

3 years ago

Please explain (picture attached)

Mathematics

1 answer:

Dafna1 [17]3 years ago

6 0

Answer:

I think the answer is C.

Step-by-step explanation:

You might be interested in

Instructions: Using the image, find the distance between the points given on the graph.

Alex_Xolod [135]

Answer:

3-1 = 2 units is the distance between the points.

8 0

4 years ago

Read 2 more answers

Solve the system of equations algebraically.

nordsb [41]

Answer: D

Step-by-step explanation:

$4x-3y=8\\5x-4y=5$

Let's take one of the equations and solve for a variable to use the substitution method.

$5x-4y=5\\5x=5+4y\\x=\frac{5+4y}{5}$

Now replace this in the first equation.

$4x-3y=8\\4(\frac{5+4y}{5})-3y=8\\\frac{20+16y}{5}-3y=8$

Separate the terms.

$\frac{20}{5}+\frac{16y}{5}-3y=8$

Solve 20/5

$4+\frac{16y}{5}-3y=8$

Subtract 4 from both sides to isolate y.

$4-4+\frac{16y}{5}-3y=8-4$

$\frac{16}{5}y-3y=4$

Solve the difference.

$\frac{16-(3)(5)}{5}y=4\\$

$\frac{16-15}{5} y=4$

$\frac{1}{5}y=4$

Multiply by the reciprocal or the inverted fraction that is next to y to isolate it.

$(\frac{5}{1} )(\frac{1}{5})y=4(\frac{5}{1})$

$y=20$

Now, in order to find x, replace y in any of the two equations.

$5x-4y=5\\5x-4(20)=5\\5x-80=5\\5x=5+80\\5x=85\\x=\frac{85}{5}\\x=17$

7 0

3 years ago

Which expression is equivalent to rm ÷ rn??

Ilya [14]

I have worked that on paper

7 0

4 years ago

Read 2 more answers

Will mark brainliest! Problem is in pic below, no links please. Thanks.

Firlakuza [10]

Answer: The answer is D) $3.35

Step-by-step explanation:

Well if we want to see the price of beef and chicken the same we should use the same variable for them making the equations

$y=2.35+.25x\\y=1.75+.4x$

now let's subtract the equations for elimination

$y=2.35+.25x\\-y=1.75+.4x\\\\=\\0=.6+-.15x$

now let's solve for x

$0=.6-.15x\\0-.6=.6-.15x-.6\\-.6=-.15x\\\frac{-.6}{-15} =\frac{-.15x}{-.15} \\4=x$

now let's sub x into the original equations

$y=2.35+.25(4)\\y=2.35+1\\y=3.35\\\\y=1.75+.4(4)\\y=1.75+1.6\\y=3.35$

7 0

3 years ago

A rectangular floor of area 21.6 m2 is going to be tiled. Each tile is rectangular, and has an area of 576 cm2. An exact number

saveliy_v [14]

Answer:

Area of floor = 21.6m2

area of tile = 576cm2=0.0576m2

now,

number of tiles = 21.6/0.0576

= 375

7 0

4 years ago

Read 2 more answers