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nika2105 [10]
3 years ago
12

Which value for x makes this open sentence true?

Mathematics
1 answer:
ad-work [718]3 years ago
3 0
5+5x = x^2 +9

x^2 -5x +4 =0 

(x-4)(x-1)=0 

x-4=0
x_1=4

and x-1=0
x_2=1

hope helped 
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PLEASE HELP !!!!!!!!?!!!!!!!
dolphi86 [110]

Answer:

200 is the number of sandals

500 is the number of shoes

Step-by-step explanation:

x is the number of sandals

y is the number of shoes

so 2.5x + 4y = 2500

=> x = (2500 - 4y)/2.5

In the month of April, the numbers of shoes doubles

2.5(2x) + 4y = 3000

5x + 4y = 3000

Substitute x = (2500 - 4y)/2.5

5(2500 - 4y)/2.5 + 4y = 3000

5000 - 8y + 4y = 3000

-4y = - 2000

y = 500

x = (2500 - 4y)/2.5 = (2500 - 4(500))/2.5

x = (2500 - 2000)/2.5

x = 500/2.5 = 200

7 0
3 years ago
What is the least common multiple (LQM) of 8 and 12?
Bumek [7]

Answer:

24

Step-by-step explanation:

The LCM of 8 and 12 is 24. Find least common multiple (LCM) of: 16 & 24 4 & 6 24 & 36 40 & 60 56 & 84 16 & 12 8 & 24 24 & 12 8 & 36 40 & 12 8 & 60 56 & 12 8 & 84

8 0
3 years ago
The shape of the solution region for the system (picture) can be described as which of the following? Select all that apply.
grandymaker [24]
We have 
x>=-2
x<=6
y>=-1
y<=4

using a graph tool
see the attached figure

the solution is the figure of a rectangle <span>limited by points
</span>(-2,-1) (6,-1) (-2,4) (6,4)


the answer is 
a rectangle
a parallelogram (
rectangles<span> are subsets belonging to the set of </span><span>parallelograms)</span>

5 0
3 years ago
Area of a rectangle is 30cm^2.The length of one side is 5 cm .What is the width?
andriy [413]
Area = Length x Width

Given that the area is 30 cm² and Length = 5 cm, find width:

30 = 5 x width

width = 30 ÷ 5 = 6cm

Answer: The width is 6 cm

8 0
3 years ago
In the figure, mAB = 45° and mCD = 23°. The diagram is not drawn to scale.
Yakvenalex [24]

Answer:

Option A. x=34\°

Step-by-step explanation:

we know that

The measure of the inner angle is the semi-sum of the arcs comprising it and its opposite.

x=\frac{1}{2}(arc\ CD+arc\ AB)

substitute the values

x=\frac{1}{2}(23\°+45\°)

x=34\°

4 0
3 years ago
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