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aliya0001 [1]
3 years ago
15

Pls help !!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Mashutka [201]3 years ago
4 0
Maybe the answer is B
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Solve for x. enter your answer in interval notation using grouping symbols. x^2+15x<-36
Oliga [24]
X²+15x+36<0

at first solve quadratic equation

D=b²-4ac= 225-4*1*36= 81

x=(-b+/-√D)/2a
x=(-15+/-√81)/2= (-15+/-9)/2
x1=(-15-9)/2=-12
x2=(-15+9)/2=-3

we can write x²+15x+36<0 as (x+12)(x+3)<0

(x+12)(x+3)<0 can be 2 cases, because for product to be negative one factor should be negative , and second factor should be positive
 1 case)      x+12<0, and x+3>0,                                            
                       x<-12, and x>-3
(-∞, -12) and(-3,∞) gives empty set

or second case)  x+12>0 and x+3<0
x>-12 and x<-3
(-12,∞) and (-∞,-3)  they are crossing , so (-12, -3)  is a solution of this inequality


3 0
3 years ago
Sketch a model to show how to combine the following fractions: 4/3 + 2/3 =
DerKrebs [107]
4/3 + 2/3= (4+2)/3= 6/3= 2
3 0
3 years ago
Read 2 more answers
Help me plz i wnt help plz i want help
Bas_tet [7]

Answer:

C)28in

Step-by-step explanation:

To get the area of this face, we will divide it into 3 sections.

Area of the 1st section:

Given:

l=4in

w=2in

Formula:

a=l*w

Solution:

a=l*w

a=8in^2

Area of the 2nd section:

Given:

l=2in

w=2in

Formula:

a=l*w

Solution:

a=l*w

a=2in*2in

a=4in^2

Area of the 3rd section:

l=8in

w=2in

Formula:

a=l*w

Solution:

a=l*w

a=8in*2in

a=16in^2

a1+a2+a3=Area of the face

8in^2+4in^2+16in^2=28in^2

Hope this helps ;) ❤❤❤

3 0
3 years ago
Read 2 more answers
Solve using the standard algorithm. 82.14 ÷ 0.6 ≅
kirill115 [55]

Answer:60

Step-by-step explanation:

5 0
3 years ago
What does it mean if the x-coordinate in an ordered pair is zero? What if the y-coordinate is zero? Both? Explain.
Harman [31]
If the x-axis ordered pair is (0,0) and the y-axis ordered pair is (0,0), it is just where the lines intersect or also known as the origin. Both x and y can have a (0) in it.

for example let's say that you have an ordered pair on the X-axis of (5,0) and a ordered pair on the y-axis of (-3,0) it would look like that^^

or if it was just (0,0) it would be a dot in the middle


Don't know if it helped much, but there ya go

5 0
3 years ago
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