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guapka [62]
3 years ago
7

The perimeter of an equilateral triangle is 15 inches more than the perimeter of a square, and the side of the triangle is 7 inc

hes longer than the side of the square.
Find the side of the triangle (Hint: An equilateral triangle has three sides the same length.)
The side of the triangle is __in3. - in. - in2.
Mathematics
1 answer:
kykrilka [37]3 years ago
4 0

The side of the triangle is 13 inches
Side of square. 6 inches

X= side of square

4x+15 =3(x+7)
4x+15=3x+21
x=6

6+7= 13

Perím square 6x4= 24
Perim triangle 13x3=39
39-24=15
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Jimmy spent 55 minutes on solving 11 math questions. If it took him the same amount of time to solve each question how long woul
FinnZ [79.3K]

Answer:

5

Step-by-step explanation:

The problem is set up as 55/11.

55/11=5

Hope this helps!

4 0
3 years ago
Read 2 more answers
A 2-kg object is fired from a cannon at a 30º angle wrt to the horizontal. the initial speed is 35 m/s. how high will the object
kompoz [17]
     <span> You have :
----------------

v0 = 35 m/s

B = angle of elevation = 30 deg

a suby = - g

v suby0 = ( v0 ) ( sin B )

v suby0 = ( 35 m/s ) ( sin 30 ) = 17.5 m/s

At maximum height :
------------------------------

v suby = vy* = 0.0

t = t*

y = ymax = y*

Basic kinematics gives :
-------------------------------------

a suby = dv suby / dt = -g ------> dt = dv suby /a suby

v suby = dy/dt ------> dt = dy / vsuby

dt = dv suby / a suby = dy / v suby

( v suby ) ( d v suby) = ( a suby ) dy = ( -g ) dy

Now integrate and get :
-----------------------------------

( v suby* )^2 - ( v suby0)^2 ( 1/2 ) = ( -g ) ( ymax )

ymax = [ ( v suby0 )^2 - ( v suby* )^2 ] / [ ( 2 ) ( g ) ]

ymax = ( 17.5 m/s )^2 - ( 0.0 m/s )^2 ] / [ ( 2 ) ( 9.807 m/s^2 ) ]

ymax = 15.6 m <------------------

Check the result:
--------------------------

t* = v suby0 / g = ( 17.5 m/s ) / ( 9.807 m/s^2 ) = 1.784 s

y* - y0 = ( v suby0 ) ( t* ) - ( g/2 ) ( t* )^2

y* = ( 17.5 m/s ) ( 1.784 s ) - ( 9.807 m/s^2 / 2 ) ( 1.784 s )^2

y* = ymax = 31.23 m - 15.61 m = 15.6 m

The ymax values agree.</span>
6 0
4 years ago
PLEASE HELP AND EXPLAIN!!
prisoha [69]

Answer:

D

Step-by-step explanation:

This isnt a cartisean coordinate plane so A is wrong. One of our points is at

- 3 + i

Because it coincide with real number 3, and negative imaginary number i.

Conjugates are terms with opposite inverse of terms.

So our conjugates is

- 3 - i

3 0
3 years ago
A contractor estimated that one of his two brick layers would take 9 hours to build a certain wall and the other 10 hours. Howev
Dmitry [639]

Answer:

900

Step-by-step explanation:

Assume x brick

X*(1/9+1/10)一 10=X/5

X(19/90-1/5)=10

X*(1/90)=10

X=900

6 0
3 years ago
HELP HELP!!!!!<br> PLEASE HELP!!!
WINSTONCH [101]

Answer: i can't see the pic

Step-by-step explanation:

7 0
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