I need help with this Show work on each one

Answers

Answer 1

Answer:

Answer:

first one is 1

Second is -2/3

Related Questions

Alma wants to prove to her parents that listening to music while she studies for her tests will help her get better grades. She decides to ask 15 of her friends if they listen to music while they study for tests and what their grades are. She finds that her friends who have high grades also listen to music while they study for tests. She tells her parents that she has proven that listening to music while studying for tests will cause her grades to improve. What mistake has Alma made?
5) What is the value of n in the picture?3n n 14 A) 19 B) 33 C) 57 D) 41.5
If n = 5.3 cm and p = 6.25 cm, what is the measure of angle ?
The triangles are similar. If PN = 12, QP = 8, and PM = 17, find QR.
Given the function rule f(x) = x^2 - 3x + 2, what is the output of f(-2)

Is the square root of 18 closer to 4 or 5

Answers

It’s closer to 4 because 18 is closer to 16

a student sells small and large greeting cards decorated at a craft fair. The small cards coast 3 dollars per card, and the large cards coast 5 dollars per card. The student collects 95 for selling a total of 25 cards. what are the variables what is the system how do you graph it how many of each card did the student sell please and thank you

Answers

$x-the\ small\ cards\ny-the\ large\ cards\n\n \left\{\begin{array}{ccc}3x+5y=95\nx+y=25\end{array}\right\n\left\{\begin{array}{ccc}5y=-3x+95&/:5\ny=-x+25\end{array}\right\n\left\{\begin{array}{ccc}y=-(3)/(5)x+19\ny=-x+25\end{array}\right\n\n----------------------$

$y=-(3)/(5)x+19\n\nfor\ x=0\to y=-(3)/(5)\cdot0+19=19\to A(0;\ 19)\nfor\ x=10\to y=-(3)/(5)\cdot10+19=-6+19=13\to B(10;\ 13)\n----------------------------\n\ny=-x+25\n\nfor\ x=0\to y=-0+25=25\to C(0;\ 25)\nfor\ x=10\to y=-10+25=15\to D(10;\ 15)\n----------------------------\n\na\ graph\ on\ the\ picture\n\nAnswer:x=15\ and\ y=10.$

15 small and 10 big cards to the days if you want to.

Jason has a piece of wire that is 62.4 inches long. He cuts the wire into 3 equal pieces. Which is the best estimate of the length of each piece of wire.

Answers

Answer:

The best estimate of the length of each piece of wire is 20.8 inches (Approx).

Step-by-step explanation:

Let us assume that the length of each pieces of wire be x.

As given

Jason has a piece of wire that is 62.4 inches long.

He cuts the wire into 3 equal pieces.

Than the equation becomes

3x = 62.4

$x = (62.4)/(3)$

x = 20.8 inches (Approx)

Therefore the best estimate of the length of each piece of wire is 20.8 inches (Approx).

62.4/3=20.8 is one of the 3 wires that are equal

A round barbecue pit is 2 meters in diameter. What is the distance around the barbecue pit? A. 3.14 meters
B. 12. 56 meters
C. 6.28 meters
D. 18.84 meters

Answers

The length of a circle is equal to 2π * diameter/2, where π = ~3.14. In our case we have 2*(~3.14) = 6.28 meters. So the correct answer is C.

Solve the system.x – 2y = 10
3x + 2y = 14

(Points : 5)
(–8, 6)
(–2, 6)
(6, –8)
(6, –2)

Answers

$x - 2y = 10\n 3x + 2y = 14\n ------\n 4x=24\n x=6\n\n 6-2y=10\n 2y=-4\n y=-2\n\n (6,-2)$

A circle cuts the x-axis at (4,0) and (14,0), and cuts the y-axis at (0,6) and (0,8). Find it's equation

Answers

It is not a circle but you can find the equation of the ellipse.
To do this we need to work out the major and minor radii and the centre
The centre is at (9, 7)
The major (y) radius is 1 and the minor (x) radius is 5
Therefore the equation is (x-9)/5 + (y-7)/1 = 1