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Jet001 [13]
3 years ago
7

Mary needs 45 craft sticks to build a model for her science project. If the craft sticks cost 10 cents each, how much will 45 cr

aft sticks cost?
 A. 

$0.10

 B. 

$1.00

 C. 

$0.45

 D. 

$4.50


​
Mathematics
1 answer:
Snowcat [4.5K]3 years ago
3 0

Answer:

the answer is B

Step-by-step explanation:

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Factorise the following
ASHA 777 [7]

Answer:

4ny²+4n²-4n-8+y⁴-2y²

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Mrs.Tampo has 17 students in her class last year and this year she had 25 students in math class what is the percent of change
Alla [95]

Answer:

32% decrease

Step-by-step explanation:

Solution:

Calculate percentage change

from V1 = 25 to V2 = 17

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7 0
2 years ago
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A man is standing at a radar base and observes an unidentified plane at an altitude 6000m flying towards the radar base at an an
liubo4ka [24]

Answer:

The speed in of the plane is 115.47 m/sec

Step-by-step explanation:

Given:

Height at which the plane is flying = 6000 m

Angle of elevation at the radar base = 30 Degrees

Angle of elevation at the radar base after one minute  = 60 Degrees

To Find:

The Speed of the plane in meter per second = ?

Solution:

Let us use the tangent of the angle to find the distance (d) to a point directly below plane:

<u>when the angle is 30 degrees</u>

tan(30) = \frac{6000}{d1}

d1   = \frac{6000}{tan(30)}

d1 = \frac{6000}{0.577}

d1 = 10392.3 meters

<u>when the angle is 60 degrees</u>

tan(60) = \frac{6000}{d2}

d2  = \frac{6000}{tan(60)}

d2  = \frac{6000}{1.732}\\

d2 = 3464.1 meters

<u>distance travelled by aircraft in 1 min is  </u>

=>d1 - d2

=>0392.3 - 3464.1

= 6928.2 m/min

<u>Now converting to m/sec</u>

=>\frac{6928.2}{60}

=>115.47 m/sec

4 0
3 years ago
Need answer fast thx
LiRa [457]

Answer:

50

Step-by-step explanation:

10% of 100 is 10 so times it by 5

7 0
3 years ago
Each ride at the fair costs $2.50. Alex will spend at least $15 for rides. Write an inequality to determine the least number of
goblinko [34]
0<r<6
the least number of ride he can go on is 0 which is none and the most is 6 because 15/2.50=6
4 0
3 years ago
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