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Brrunno [24]
3 years ago
12

there are 18 girls and 40 boys in the library. 5/9 of the girls are 3/8 of the boys are reading, how many children are reading

Mathematics
2 answers:
RideAnS [48]3 years ago
6 0

Answer: 25 children

Step-by-step explanation:

18 girls

Lets find what is 5/9 of girls who are reading

(18/9)*5=2*5=10 girls read

Lets find what is 3/8 of boys who are reading:

(40/8)*3=5*3=15 boys read

10 girls+15boys=25 children read

swat323 years ago
5 0

Answer:

25 children

Step-by-step explanation:

5/9 of 18 is 10

3/8 of 40 is 15

10 + 15 = 25

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There were thirteen friends playing a video game online when six players quit.If each player left had eight lives how many lives
Lorico [155]
They had 56 lives in total

Explanation: if there were thirteen friends to begin with and six quit that would leave them with 7 friends. If those seven remaining friends each had 8 lives, you multiply those 7 friends by 8 lives which would get 56.

If all thirteen friends were still in the game then they would have 104 lives all together.
5 0
2 years ago
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Given circle P with arc AE=53, arc BA=68 and arc CB=72 match the following angles with their corresponding measurements
11Alexandr11 [23.1K]
From the diagram;
1. Angle 2 = ADB+BDH
                                           = arcAB/2 +90 
                                           = 34 +90 
                                           = 124°

2. Angle 4= 90°,
Reason ; the angle between a tangent and a radius is equal to 90. A tangent is a line that touches the circumference of a circle once even if prolonged.

3. Angle 5 = 90 -BDC (note the acr subtends twice the angle it subtends on the circumference to the center.
             = 90-arc BC/2
             = 90-36
              = 54°

4. Angle 6 = BFD
             = 180-ADB-FBD
             = 180-AB/2-DE/2
             But DE = 180 -121 = 59
Therefore, BFD = 180 -34-29.5
             = 116.5°

5. Angle 1 = 180- BFD (angles on a straight line add up to 180°)
              = 180- 116.5
              = 63.5°
           

6. Angle 3 = 180 -(ADB+BFD)
             = 180 -(34 +116.5)
             =  180- 150.5
             = 29.5°
similarly angle 3 = DE/2 = 59/2 = 29.5°

7. Angle 8= 90, because BD is diameter;
 angles subtended by a diameter to the circumference is always a right angle (90°)


8.Angle 7 =  BE
               but BE= AB+AE
                          = 68+ 53
                          = 121°
                 


    
3 0
3 years ago
What is the equation of the line that passes through (-2, 2) and (1, -4)?
poizon [28]

Answer:

y = - 2x - 2

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

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m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁  = (- 2, 2) and (x₂, y₂ ) = (1, - 4)

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y = - 2x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (- 2, 2), then

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y = - 2x - 2 ← equation of line

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3 years ago
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The graph of a system of equations with different slopes will have no solutions. Correct option in "Never"

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3 years ago
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But feel free to check my work :D

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