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3 years ago

What is the length of CD? In this diagram

Mathematics

2 answers:

ohaa [14]3 years ago

5 0

I need the diagram ..........

julia-pushkina [17]3 years ago

3 0

What diagram?????????????

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(3x+2)∧2=9 how do i solve this in the square root property

Irina18 [472]

$(3x+2)^2=9 \\\\9x^2+12x+4-9=0\\\\9x^2+12x-5=0\\\\a=9,\ \ b=12, \ \ c=-5$

$x_{1}=\frac{-b-\sqrt{b^2-4ac}}{2a}=\frac{-12-\sqrt{12^2-4 \cdot9 \cdot (-5)}}{2 \cdot 9}=\frac{-12-\sqrt{144+180}}{18}=\\\\=\frac{-12-\sqrt{324}}{18}=\frac{-12-18}{18}=\frac{-30}{18}=-\frac{5}{3}\\\\x_{2}=\frac{-b+\sqrt{b^2-4ac}}{2a}=\frac{-12+\sqrt{12^2-4 \cdot9 \cdot (-5)}}{2 \cdot 9}=\frac{-12+18}{18}=\frac{6}{18}=\frac{1}{3} \\\\Answer: \ x=-\frac{5}{3}\ \ and \ \ x=\frac{1}{3}$

6 0

3 years ago

8x - 60 less than or equal to 2 (5 - 3x)

MrRa [10]

Answer:

x less than or equal to 5

i think thats what u wanted

3 0

3 years ago

18. On Monday, Mr Tan earned a total of $1260 from the sale of some toys. On the next day, he earned a total of $1736 from the s

GalinKa [24]

Answer:

Monday 45

Tuesday 62

Step-by-step explanation:

It's asking you to find the common factor. 28 goes into both of these numbers. So do 1260÷28 and 1736÷28

6 0

3 years ago

15. Find the value of x.<br> (68 - x)<br> 3x

masha68 [24]

Answer:

17=x

Step-by-step explanation:

In this case, we need to use Vertical Angles Theorem to solve this problem. Basically, because of the position of the angles, they are congruent.

68-x = 3x

Add x to both sides

68=4x

Divide by 4

17=x

Hope this helps!

3 0

3 years ago

Read 2 more answers

Change the decimal to a fraction and reduce .62

Len [333]

Answer:

31/50

Step-by-step explanation:

0.62 = 62/100 = 31/50

6 0

3 years ago