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3 years ago

Help me plzzzzz now!!!!

Mathematics

1 answer:

Musya8 [376]3 years ago

4 0

Answer:

Step-by-step explanation:

Any time you multiply an even number of negatives together you will get a positive number. The only choice that has an even number of negatives is the last choice with 2 negatives.

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The slope of the line in the graph is 4. Fill in the y intercept. Choose the correct equation in the form y = mx + b The y inter

nikitadnepr [17]

Answer:

$\rm\implies y = 4x + 3$

Step-by-step explanation:

Given :-

The slope of the line in the graph is 4.

And we need to find the equation of the line. On looking at the graph we see that , it cuts y axis at (0,3) .So the y Intercept of the equation is 3 .

Slope Intercept Form :-

$\rm\implies y = mx + c$

Substituting the respective values :-

$\rm\implies y = 4*x + 3 \\\\\rm\implies y = 4x + 3$

Hence the equation of line is y = 4x + 3 

7 0

3 years ago

A basketball is thrown with an initial upward velocity of 30 feet per second from a height of 6 feet above the ground. The equat

Elena L [17]

For this case we have the following equation:
h = -16t ^ (2) + 30t + 6
We substitute the value of h = 10 in the equation:
10 = -16t ^ (2) + 30t + 6
Rewriting we have:
0 = -16t ^ (2) + 30t + 6-10
0 = - 16t ^ (2) + 30t - 4
We look for the roots of the polynomial:
t1 = 0.144463904
t2 = 1.730536096
"the ball passes its maximum height, it comes down and then goes into the hoop". Therefore, the correct root is:
t = 1.730536096
Answer:
It goes into the hoop after:
t = 1.73 seconds

8 0

3 years ago

A random walk on the 2-dimensional integer lattice begins at the origin. At each step, the walker moves one unit either left, ri

NNADVOKAT [17]

The 9 combinations that exist for two movements:

R,R
R,L
R,U *
L,R
L,L
L,U
U,R *
U,L
U,U

Walker would only be able to make it to (1,1) with only 2 of these combinations.

So if he were only allowed to make two movements, his chances of arriving at (1,1) would be 2/9.

7 0

3 years ago

On one map of a town , the scale from the town to the map is 12mi to 3 cm. the school is 2.5cm from the grocery store on this ma

AleksandrR [38]

Answer:

Step-by-step explanation:

Grocery Store

12 mi / 3 cm = x / 2.5 cm Cross multiply

12 * 2.5 = 3 * x Multiply

30 = 3x Divide by 3

30/3 = x

x = 10 miles

Library

12 mi / 2 cm = x / 1.5 Cross multiply

12 * 1.5 = 2x

18 = 2x Divide by 2

18/2 = x

9 miles

The library is closer than the grocery store.

3 0

3 years ago

Which type of triangle is formed with the points A(1, 7), B(-2, 2), and C(4, 2) as its vertices?

Dafna1 [17]

We will have to use the distance formula in order to determine the lengths of each side of the triangle.

Distance formula: $\sqrt{(x_{2} - x_{1})^{2} + (y_{2} - y_{1})^{2} }$

Let's calculate AB first:
A (1, 7) and B (-2, 2)
A: x1 = 1 and y1 = 7
B: x2 = -2 and y2 = 2

so
$\sqrt{(-2 - 1)^{2} + (2 - 7)^{2} }$
$\sqrt{(-3)^{2} + (-5)^{2} }$
$\sqrt{9 + 25 }$
AB = $\sqrt{34}$ or (rounded to the nearest tenth) ≈ 5.8

Now let's do BC:
B: x1 = -2 and y1 = 2
C: x2 = 4 and y2 = 2

So
$\sqrt{(4 - -2)^{2} + (2 - 2)^{2} }$
$\sqrt{(6)^{2} + (0)^{2} }$
BC = $\sqrt{36 }$ or 6

Now let's do CA
C: x1 = 4 and y1 = 2
A: x2 = 1 and y2 = 7

So
$\sqrt{(1 - 4)^{2} + (7 - 2)^{2} }$
$\sqrt{(-3)^{2} + (5)^{2} }$
$\sqrt{9 + 25}$
CA = $\sqrt{34}$ or (rounded to the nearest tenth) ≈ 5.8

So let's recap:

AB ≈ 5.8
BC = 6
CA ≈ 5.8

So AB and AC are the same length while BC is .2 units longer which means this is an isosceles triangle.

4 0

3 years ago