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solmaris [256]
4 years ago
6

The sum of two positive integers, a and b, is at least 30. The difference of the two integers is at least 10. If b is the greate

r
integer, which system of inequalities could represent the values of a and b?
O a + b 2 30 b2a + 10
O a + b 2 30 bsa - 10
O a + b s 30b2a + 10
O a + b = 30 bsa-10
Mathematics
2 answers:
spayn [35]4 years ago
4 0
A + b s 30b2a yw



Why?
Because it is
vlabodo [156]4 years ago
3 0

Answer:

ITS A

Step-by-step explanation:

TOOK TEST

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The areas of two similar triangles are 75m2 and 300m2. The length of one of the sides of the second triangles is 9m. What is the
Ymorist [56]

Answer:

4.5 m

Step-by-step explanation:

The area of two similar triangles are 75 m2 and 300 m2. This gives you the scale factor of the triangles:

\dfrac{A_{small}}{A_{large}}=k^2\Rightarrow k^2 =\dfrac{75}{300}=\dfrac{3}{12}=\dfrac{1}{4}\Rightarrow k=\dfrac{1}{2}.

Then you can find the length of the corresponding side:

\dfrac{side_{small}}{side_{large}}=k\Rightarrow =\dfrac{side_{small}}{9}=\dfrac{1}{2},\ side_{small}=\dfrac{9}{2}=4.5\ m.

4 0
3 years ago
Find the center and radius for the circle by the equations: x2 + y2 + 5x - y + 2 = 0.
lord [1]
X2+5x+y2-y=-2
X2+2*5x2+(5/2)^2-(5/2)^2+y2-2*y/2+(1/2)^2-(1/2)^2=-2
(x+5/2)^2+(y-1/2)^2-13/2=-2
(x+5/2)^2+(y-1/2)^2=9/2
So centre =(-5/2,1/2)
Radius=(9/2)^(1/2)
7 0
3 years ago
Convert 0.25 to a fraction in its simplest form​
erik [133]

Answer: 1/4 is the answer

Step-by-step explanation: it is 1/4 because 25/100 = 1/4

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8 0
3 years ago
How to write an equation in slope intercept form
hjlf
Slope intercept form is y=mx+b.
Y and x stay. 
M is your slope.
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Hope that this helps!
8 0
3 years ago
A direct variation function contains the points (–8, –6) and (12, 9). Which equation represents the function?
mamaluj [8]

Answer:

Option C. y=(3/4)x

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form y/x=k or y=kx

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

so

Find the value of the constant k

For the point (-8,-6)

k=y/x=(-6/-8)=3/4

For the point (12,9)

k=y/x=(9/12)=3/4

<u><em>Note</em></u> A single point was required to find the constant k (because the line passes through the origin)

The equation is equal to

y=(3/4)x

7 0
4 years ago
Read 2 more answers
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