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Leto [7]
3 years ago
12

What is the solution to: T/t-4=t+4/6

Mathematics
1 answer:
S_A_V [24]3 years ago
4 0
\frac{t}{t-4}= \frac{t+4}{6} \\ t \neq 4 \\ 6t=  (t+4)(t-4) \\ 6t=t^2-16 \\ t^2-6t-16=0 \\ D=b^2-4ac=(-6)^2-4*1*(-16)=36+64=100 \\ t_{1,2}= \frac{-bб \sqrt{D} }{2a}  \\ t_1= \frac{6-10}{2}=-2 \\  \ t_2= \frac{6+10}{2}=8

Answer: t=-2, t=8
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4. What is the system of equations that describes the following graph?
GarryVolchara [31]

Answer:

The system of inequalities is

y

y>0.25x

Step-by-step explanation:

step 1

Find the equation of the dashed line with negative slope

The line passes through the points

(0,-2) and (-2,0)

Find the slope

m=(0+2)/(-2-0)=-1

Find the equation of the line in slope intercept form

y=mx+b

we have

m=-1\\b=-2

substitute

y=-x-2

The solution of the inequality is the shaded area below the dashed line

therefore

The equation of the inequality A is

y

step 2

Find the equation of the dashed line with positive slope

The line passes through the points

(0,0) and (4,1)

Find the slope

m=(1-0)/(4-0)=0.25

Find the equation of the line (direct variation)

y=kx

we have

k=0.25

substitute

y=0.25x

The solution of the inequality is the shaded area above the dashed line

therefore

The equation of the inequality B is

y>0.25x

therefore

The system of inequalities is

y

y>0.25x

4 0
3 years ago
GEOMETRY NEED HELP ASAP WILL ASSIGN BRAINLIEST!!!
faust18 [17]
<span><u>Answer </u>
31.12 in

<u>Explanation </u>
To get the length required, lets first find angle mF,
mF = 180 – (43 + 62) =75o
Now we can use the sin rule to find length DE.
a/sin⁡A =b/sin⁡B Where a and b are the length opposite to angle A and B respectively.
DE/sin75=22/sin⁡43
DE=(22 sin⁡75)/sin⁡43
DE=31.12 in  
</span>
7 0
3 years ago
Read 2 more answers
Which equals 23 kilograms?
Harlamova29_29 [7]

Answer:

C

Step-by-step explanation:

To convert kilograms into grams, you need to multiply the number you are converting by 1000.

I hope my answer helpe! :)

4 0
3 years ago
Is 85 prime or composite explain
forsale [732]
85 is a composite number because it has more than two factors.
85 factors are 1, 5, 17, 85

For example 5 is prime because it’s factors are only two of them
5 factors are 1, 5
8 0
4 years ago
Helpp brainliest if correct
11Alexandr11 [23.1K]

Answer:

The answer would be C: a copy of an angle

Step-by-step explanation:

3 0
3 years ago
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