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inessss [21]
3 years ago
6

Evaluate 1x + y, for x = 8 and y=-15. 7 -7 23 -23

Mathematics
1 answer:
statuscvo [17]3 years ago
5 0

Answer:

B) -7

Step-by-step explanation:

x+y

8+(-15)=8-15=-7

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a ball is thrown vertically upward from the ground with an initial velocity of 60 ft/sec. how high will the ball go?
vazorg [7]

Answer:

The ball will go to maximum height of 56.25 meters.

Step-by-step explanation:

It is given that, a ball is thrown vertically upward from the ground. Initial velocity of the ball, v = 60 ft/sec

Initial height is 0 as the ball is thrown from ground. The equation of projectile is given by :

h(t)=-16t^2+vt+h

h = 0

h(t)=-16t^2+60t..............(1)

We need to find the maximum height reached by the ball. For maximum height,

\dfrac{dh(t)}{dt}=0

\dfrac{d(-16t^2+60t)}{dt}=0

t = 1.875 seconds

Put the values of t in equation (1). So,

h(t)=-16(1.875)^2+60(1.875)

h(t) = 56.25 meters

So, the ball will go to maximum height of 56.25 meters. Hence, this is teh required solution.

3 0
3 years ago
What is the side length of a square with a perimeter of 60 meters​
xxMikexx [17]

Answer:

a = 15

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Find the perimeter of quadrilateral ABCD with vertices A=(1,1) B=(4,4) C=(7,1) D=(4,-2). Explain your answer.​
Vanyuwa [196]

we have the coordinates of ABCD

there are 2 ways of doing this one is you find the distance of ab, bc, cd and da and then add the answers together. there is another way but i dont remember it properly so i am just gonna do it this way

distance between 2 point = \sqrt{(x_B-x_A)^2+(y_B-y_A)^2}

AB

d = \sqrt {(4 - 1)^2 + (4 - 1)^2}

d = \sqrt {(3)^2 + (3)^2}

d = \sqrt {9 + 9}

d = \sqrt 18

AB = 4.24

now repeat the same with all

BC= 4.24

CD= 4.24

DA= 4.24

so its a square with all the same sides so perimeter is 4 x 4.24

perimeter is 16.96

hope this helps

mark me as brainliest please

3 0
2 years ago
Use an integer to represent 15 feet and below sea level
Vitek1552 [10]

Answer:

-15 would be the answer because if it's below sea level it would have a negative sign in front of 15

Step-by-step explanation:

5 0
1 year ago
Marilyn has 24 hair ribbons. 9 of her ribbons are red. What percent of her hair
sergey [27]
37.5
9/24=0.375
Move the decimal two places and you get 37.5%
7 0
3 years ago
Read 2 more answers
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