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Reil [10]
3 years ago
14

Can you please help me :v?

Mathematics
1 answer:
yawa3891 [41]3 years ago
5 0

4 walls need 262 people/minutes (7)(36)

1 wall takes 63 people/minutes (262/4)

7 walls need 441 people/minutes (63)(7)

9 people could do that in 49 minutes (441/9)

HOPE THIS HELPS!!!!

You might be interested in
The amounts of a sum of money in 2 years and 5 years are rs 2800 and e 3250respectvely .find the sum
sammy [17]

Answer:

money : x

in 2 years : x+2

in 5years: x+2= 2800 + 3250

sum= x+2= 6050

x=6050÷2

x=3025

6 0
3 years ago
HELP HELP HELP HELP HELP HELL
vitfil [10]

Answer:

it sould be D because rise over run.

Step-by-step explanation:

at the point its 5/6 and the only answer with that fraction is D. or it depends because if you're looking for the begening of the dotted lines then it's C .but if you're looking for end point then it's D. if you don't know ask me and ill see what i can do

3 0
3 years ago
Can someone help me please
Margarita [4]

Answer:

46

Step-by-step explanation:

Solution :

Remember that the sum of complementary angles is always 90°.

First, finding the value of x :

Set up an equation :

( Being complementary angles )

Solve for x

{ Remove unnecessary parentheses }

{ Combine like terms }

{ Subtract 3 from 30 }

{ Move 27 to right hand side and change it's sign }

{ Subtract 27 from 90}

{ Divide both sides by 9 }

The value of X is 7°

Now, Replacing the value of x in order to find the value of  B

{ Plug the value of x }

{ Multiply 7 by 7 }

{ Subtract 3 from 49 }

The measure of  B is 46°

7 0
3 years ago
A ball is thrown upward from ground level. Its height h, in feet, above the ground after t seconds is h-48t -16t^2.
Marat540 [252]

Answer:

36 feet.

Step-by-step explanation:

We have been given that a ball is thrown upward from ground level. Its height h, in feet, above the ground after t seconds is h(t)=-48t -16t^2. We are asked to find the maximum height of the ball.

We can see that our given equation is a downward opening parabola, so its maximum height will be the vertex of the parabola.

To find the maximum height of the ball, we need to find y-coordinate of vertex of parabola.

Let us find x-coordinate of parabola using formula x=-\frac{b}{2a}.

x=-\frac{-48}{2(-16)}

x=-\frac{48}{32}

x=-\frac{3}{2}

So, the x-coordinate of the parabola is -\frac{3}{2}. Now, we will substitute x=-\frac{3}{2} in our given equation to find y-coordinate of parabola.

h(t)=-48t -16t^2

h(-\frac{3}{2})=-48(-\frac{3}{2})-16(-\frac{3}{2})^2

h(-\frac{3}{2})=-24(-3)-16(\frac{9}{4})

h(-\frac{3}{2})=72-4*9

h(-\frac{3}{2})=72-36

h(-\frac{3}{2})=36

Therefore, the maximum height of the ball is 36 feet.

3 0
3 years ago
A movie theater sends out a coupon for 70% off the price off a ticket. a) Write an equation for the situation, where y is the pr
sergey [27]
Equation 1
y=x-0.7

equation 2
x=y+0.7

4 0
3 years ago
Read 2 more answers
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