All categories

2 years ago

Another One I need help withhhh sorrry

Mathematics

1 answer:

Effectus [21]2 years ago

6 0

Answer:

y = 2x+3

Step-by-step explanation:

Sorry I'm probably too late since Quizziz doesn't wait unless you have the freeze timer thing.

y = mx+b

b is the y intercept. The y intercept (when x=0) is given in the table.

Now plug a coordinate in to solve for m.

My coordinates: (1,5)

5 = m + 3

Solve.

2 = m

m = 2

Note: never plug in the y intercept when looking for m.

You can also find the slope by (subtracting the y value of one coordinate from another y value of another coordinate)/(subtracting x value from the first y coordinate above from the x value from the second coordinate).

In this case, it'd be

m = (7-5)/(2-1)

m = 2/1

m = 2

You might be interested in

A. How long does the piece of wire need to be to make the shape? Explain.

Misha Larkins [42]

A. The wire needs to be 138.226 cm long but already 34.5565 cm of the circle has been covered.

B. To determine the length of the wire needed, we subtract a quarter of the circles circumference from its whole circumference.

Step-by-step explanation:

Step 1:

The circumference of a circle is obtained by multiplying the radius with 2π.

The circumference of a circle $= 2 \pi r.$

Here the radius of the circle is 22 cm but already a quarter of the circumference has been covered with wire.

Step 2:

So to determine the length of the wire needed, we subtract a quarter of the circles circumference from its whole circumference.

So the circumference of the circle $= 2(3.1415)(22) = 138.226$ cm.

$\frac{3}{4} (138.226) = 103.6695$ cm and $\frac{1}{4}(138.226) = 34.5565$ cm.

So the wire needs to be 138.226 cm long but already 34.5565 cm of the circle has been covered. An additional 103.6695 cm of wire is needed to cover the remaining circle.

7 0

3 years ago

How do I write an equation for a line with a slope of ²/³ that has a y-intercept at -2.Titer eat at 2

maxonik [38]

Answer:

y = 2/3x - 2

Step-by-step explanation:

Given :

Slope, b = 2/3

y - intercept, c = - 2

The equation of a line can be expressed in slope intercept form as :

y = bx + c

b = slope ; c = y - intercept

Hence, line equation becomes ;

y = 2/3x - 2

3 0

3 years ago

Solve each problem<br> -233 minus (-233)<br> 31 minus (-8)<br> -103 minus (-575)

aliya0001 [1]

-233 minus (-233)
-233 -(-233)
-233 + 233
0

31 minus (-8)
31 - (-8)
31 + 8
39

-103 - (-575)
-103 + 575
472

4 0

2 years ago

UPS charges $7 for the first pound, and $0.20 for each additional pound. FedEx charges $5 for the first pound and $0.30 for each

grigory [225]

Answer:

1. 20 pounds

2. $11

Step-by-step explanation:

To set this up, you have to use a system of equations. It would look like this, where $p$ is pounds and $t$ is total cost:

UPS: $t=7+0.20p$

FedEx: $t=5+0.30p$

In order to solve a system of equations you must either a.) graph it, or b.) set them equal to each other.

If you graph it, the answer is where the two lines intersect.

If you set them equal to each other, solve it.

I will set them equal to each other in this:

$7+0.20p=5+0.30p$

The first step in a problem like this, where there's the same variable on both sides, is to subtract the smaller variable from both sides. In this case, it is $0.20x$ . That would turn the equation into:

$7=5+0.10p$

After that, you must solve it like a regular two-step equation.

Start by subtracting 5 from both sides:

$2=0.10p$

Now, you must divide both sides by $0.10$ .

$\frac{2}{0.10}=\frac{0.10p}{0.10}$

That would give us:

$20=p$

This means that in order for the prices to be the same, the package must be 20 pounds.

Now in order to find the total cost, you must plug 20 into one of the equations. It doesn't matter which, since they both equal the same. I will plug it into the FedEx equation:

$t=5+0.30(20)$

Now you can just use a calculator and solve that or do it by hand. Multiply 0.30 by 20, to get 6, then add 5, which equals 11.

You should get: $t=11$ .

This means that the total cost, when the costs are the same for both FedEx and UPS, is $11.

3 0

3 years ago

Find the value of two numbers is there some is 12 and there difference is 4

Mademuasel [1]

You mean their sum is 12?

A) x + y = 12
B) x -y = 4 then we add both equations:
2x = 16
x = 8
y = 4

3 0

2 years ago