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Black_prince [1.1K]
3 years ago
9

Need math help please!!

Mathematics
1 answer:
Eva8 [605]3 years ago
8 0

Answer:

  8

Step-by-step explanation:

The fact that DE is perpendicular to AC means triangles AED and CED are congruent and side AD is equal in length to side CD.

  5x -20 = 2x +4

  3x = 24 . . . . . . . add 20-2x

  x = 8 . . . . . . . . . .divide by 3

The value of x is 8.

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Solve the proportional equation below 6/2=(v-8)/(v-3)
goldfiish [28.3K]

½ = v; multiply the divisor to remove the variable from the denominator.

6 0
3 years ago
To get a 100 kilograms of a 48% fat content chocolate how many kilograms of a 30% and 50% mix should be used
wlad13 [49]
A kilogram %30 chocolate,
b kilogram %50 chocolate,
a+b = 100 kilogram chocolate,

48.(a+b) = 30.a + 50.b
48a + 48b = 30a + 50b
18a = 2b
b = 9a

a+b = a + 9a = 10a = 100 kg
a = 10 kg
b = 9.a = 90 kg

You should use,

10 kg %30 chocolate,
90 kg %50 chocolate
8 0
3 years ago
Complete the patterns 3,400,000 34,000 blank 3.4 blank
almond37 [142]
340 and 0.034 because yo move two decimal points to the left
6 0
3 years ago
Read 2 more answers
Can someone help me with this? i'll award brainiest :D
Burka [1]

Answer:

About 79 boys i think

Step-by-step explanation:

:)

6 0
3 years ago
An integer N is to be selected at random from {1, 2, ... , (10)3 } in the sense that each integer has the same probability of be
Andrej [43]

Answer:

Probability of N Divisible by 3 - 0.33

Probability of N Divisible by 5 - 0.2

Probability of N Divisible by 7 - 0.413

Probability of N Divisible by 15 - 0.066

Probability of N Divisible by 105 - 0.0095

Step-by-step explanation:

Given data:

Integer N {1,2,.....10^3}

Thus total number of ways by which 1000 is divisible by 3 i.e. 1000/3 = 333.3

Probability of N divisible by 3 {N%3 = 0 } = \frac{333.3}{1000} = 0.33

total number of ways by which 1000 is divisible by 5 i.e. 1000/5 = 200

Probability of N divisible by 5 {N%5 = 0 } = \frac{200}{1000} = 0.2

total number of ways by which 1000 is divisible by 7 i.e. 1000/7 = 142.857

Probability of N divisible by 7 {N%7 = 0 } = \frac{142.857}{1000} = 0.413

total number of ways by which 1000 is divisible by 15 i.e. 1000/15 = 66.667

Probability of N divisible by 15 {N%15 = 0 } = \frac{66.667}{1000} = 0.066

total number of ways by which 1000 is divisible by 105 i.e. 1000/105 = 9.52

Probability of N divisible by 105 {N%105 = 0 } = \frac{9.52}{1000} = 0.0095

similarly for N is selected from 1,2.....(10)^k where K is  large then the N value. Therefore effect of k will remain same as previous part.

3 0
3 years ago
Read 2 more answers
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