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likoan [24]
3 years ago
14

UCULI

Mathematics
2 answers:
Elis [28]3 years ago
6 0
Answer is B

UCULI
2 Points
When is a rhombus a square?
O
A. When its sides are parallel
B. When its angles are right angles
) C. When its angles are convex angles
O
D. When its sides are congruent
SUB
KatRina [158]3 years ago
5 0

Answer:

B. When its angles are right angles.

Step-by-step explanation:

A rhombus is a quadrilateral with all 4 sides congruent. The sides can be slanted, which would keep it from being a square. If you make all the sides of a rhombus straight vertically and horizontally so you have 4 right angles, you have a square. A square is a quadrilateral with all 4 sides AND all 4 angles congruent.

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Maria throws a softball straight up into the air with an initial velocity of 50 ft/sec. The ball leaves her hand when it is exac
Nataly_w [17]

Answer:

The equation that models the situation is s_{f} = 4+\frac{v_{f}^{2}-2500}{64.348}.

Step-by-step explanation:

Let suppose that effects from air friction and Earth's rotation can be neglected, so that the softball can be modelled experiment a free fall, that is, an uniform accelerated motion due to gravity. From we know the initial velocity and position of the position and we can determine the final position of the ball as a function of the final velocity:

v_{f}^{2} = v_{o}^{2}+2\cdot a \cdot (s_{f}-s_{o}) (1)

Where:

s_{o}, s_{f} - Initial and final position of the softball, measured in feet.

a - Acceleration, measured in meters per square second.

v_{o}, v_{f} - Initial and final velocities of the softball, measured in feet per second.

If we know that v_{o} = 50\,\frac{ft}{s}, a = -32.174\,\frac{m}{s^{2}} and s_{o} = 4\,ft, then the equation that models the situation is:

v_{f}^{2} = 2500-64.348\cdot (s_{f}-4)

Then, we clear the final position of the softball:

-\frac{v_{f}^{2}-2500}{-64.348} = s_{f}-4

s_{f} = 4+\frac{v_{f}^{2}-2500}{64.348}

The equation that models the situation is s_{f} = 4+\frac{v_{f}^{2}-2500}{64.348}.

8 0
2 years ago
Sean used 1-3/4 cup of sugar to make a dozen brownies. How many cups of sugare are used for 6 dozen brownies?
alisha [4.7K]

Answer:

10 1/2

Step-by-step explanation:

We need to convert 1 3/4 to an improper fraction

1 3/4 = (4*1+3)/4 = 7/4

Multiply this by the number of batches

7/4*6 = 42/4 = 21/2

Change this back to a mixed number

2 goes into 21   10 times with 1 left over

10 1/2

7 0
3 years ago
Which graph best represents a kitten's weight for the first two years after birth if, from birth to 2 years old, its weight incr
elena-14-01-66 [18.8K]

Answer:

the answer would be B

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
The height of the above triangle is ?
valentina_108 [34]
A = 1/2 bh
A = 1/2 (9)(5)
A = 45/2
A = 22.5

answer
22.5 cm^2
3 0
3 years ago
Write the equation of the line in slope-intercept form that has: slope: 3 point: (0, 2) *
Luda [366]

Answer:y = 3x + 2

Step-by-step explanation: y = mx + b

Where m is the slope and b is the y-intercept.  

8 0
3 years ago
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