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spayn [35]
4 years ago
15

Solve each system by substitution Y= 4x y= -4x

Mathematics
1 answer:
AleksAgata [21]4 years ago
7 0
The answer is will be zero because there is no way else
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Given: AD = BC and BCD = ADC <br> Prove: DE = CE
erastova [34]

Answer:

According to AD=BC So AC=BD

Step-by-step explanation:

AD = BC and angle ADC = angle BCD

we have to prove AC = BD

let's see ∆ADC and ∆BCD

AD = BC [ given ]

angle ADC = angle BCD [ given ]

CD = CD

from S - A - S

∆ADC congruence ∆BCD

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4 years ago
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A committee of 3 members is selected from a club made up of 9 junior members and 21 senior members. What is the expected number
Alchen [17]

Answer:

answer is two

Step-by-step explanation:

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8 0
3 years ago
3x + 8<br>× x + 2<br>_______​
Vladimir79 [104]

Step-by-step explanation:

<h2>(3x + 8) (x + 2)</h2>

= 3x(x + 2) + 8(x + 2)

= 3x^2 + 6x + 8x + 16

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8 0
3 years ago
Which two values of x are roots
FrozenT [24]
The answer is C. 

To solve these types of equations you first need to make sure that you equation is equal to 0. In this case all of the numbers are already on the same side so no work needs to be done there. Then we can get a, b and c values for the quadratic equation by looking at the coefficients. 

a = 4 (number attached to x^2)
b = -6 (number attached to x)
c = 1 (number with no variable attached)

Now we can put this into the quadratic equation. 

\frac{-b +/-  \sqrt{ b^{2} -4ac} }{2a}

\frac{6 +/- \sqrt{ -6^{2} -4(4)(1)} }{2(4)}

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6 0
4 years ago
The width and length of a rectangular flower bed are in the ratio 5:7. The width is 40 feet. What is the length?
anzhelika [568]

Answer:

56 feet

Step-by-step explanation:

The width and length of a rectangular flower bed are in the ratio 5:7. The width is 40 feet. What is the length?

From the above question, our ratio is given as:

Width : Length

5 : 7

Width = 40 feet ,

To solve for the Length, let us represent the length as x

Width/Length

= 5/7 = 40/x

Cross Multiply

5 × x = 7 × 40

x = 7 × 40/5

x = 56 feet

Hence: The length of the rectangular flower bed = 56 feet

6 0
3 years ago
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