All categories

3 years ago

Help plz! I will give your answer a like and help too!

Mathematics

1 answer:

grigory [225]3 years ago

6 0

Answer: 10 runners

8 ÷ ⅘ = 10

Plz mark brainliest:)

You might be interested in

Round numerical answers to the nearest hundredth, if necessary.

MAXImum [283]

We are to find how long will it take to return to the ground?

Answer:

t = 0.48 sec

Step-by-step explanation:

We are given;

initial velocity; vi = 40 ft/s

hi = 70 ft

acceleration due to gravity; a = 32 ft/s²

Now, we are given that the rocket's height as a function of time is;

h = -12at² + vit + hi

At ground, h = 0

Plugging in the relevant values to obtain ;

0 = -12(32)t² + 40t + 70

-384t² + 40t + 70 = 0

The roots of the equation gives; t = 0.48 sec

6 0

3 years ago

What is the equation of the line in slope-intercept form?

MrMuchimi

Answer:

y = mx + c

Step-by-step explanation:

m = gradient

c = y-intercept

4 0

3 years ago

Read 2 more answers

Write three ratios equivalent to the ratio described in each situation. The ratio of boys to girls on the bus is 20/15

elena-s [515]

It would be any of these:
4/3, 8/6, 12/9

7 0

3 years ago

What is the solution to this system of equations?

katen-ka-za [31]

Answer: The system of equations has no solutions.

Step-by-step explanation:

Identify the equation as:

$x + 2y - z=3$ [Equation 1]

$2x -y + 2z=6$ [Equation 2]

$x - 3y + 3z=4$ [Equation 3]

Multiply [Equation 1] by -2 and add this to [Equation 2] :

$(-2)(x + 2y - z)=3(-2)$

$\left \{ {{-2x - 4y +2z=-6} \atop {2x -y + 2z=6}} \right.\\ ..........................\\-5y+4z=0$

Find another equation of two variables: Multiply [Equation 3] by -2 and add this to [Equation 2]:

$(-2)(x - 3y + 3z)=4(-2)$

$\left \{ {{2x -y + 2z=6} \atop {-2x +6y -6z=-8}} \right.\\........................\\5y-4z=-2$

Then you get this new system of equations. When you add them, you get:

$\left \{ {{-5y+4z=0} \atop {5y-4z=-2}} \right.\\..................\\0=-2$

Since the obtained is not possible, the system of equations has no solutions.

4 0

3 years ago

The surface area of a rectangular prism is increased by a factor of 16.

Natali5045456 [20]

Answer:

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers