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Helen [10]
2 years ago
15

DE=3x,EF=x+1,and DF=1

Mathematics
1 answer:
liraira [26]2 years ago
8 0

Answer: 2.5

Step-by-step explanation:

3x+x+1=11\\\\4x+1=11\\\\4x=10\\\\x=2.5

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Which statement is true about numbers to the left of 0 on a number line?
NemiM [27]

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Numbers to the left of 0 on a number line or anywhere are always negative,

Step-by-step explanation:


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Find the area if each figure. round the nearest hundredth where neccessary.​
faltersainse [42]

Answer:

351.48cm²

Step-by-step explanation:

Heron’s Formula

Find half the perimeter (30+30+26)/2=43

It’s the square root of each side subtracted from 43, multiplied together, times 43.

√(43-30)*(43-30)*(43-26)*43=√13*13*17*43=√=123539=351.481cm²

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3 years ago
Please help me A.S.A.P.
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Answer:

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Step-by-step explanation:

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5 0
3 years ago
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Use linear approximation to estimate f (2.85 )given that f (3 )equals 2 and f prime (3 )equals 5.
Allisa [31]

Answer:

Step-by-step explanation:

Given that,

f(3) = 2

f'(3) = 5.

We want to estimate f(2.85)

The linear approximation of "f" at "a" is one way of writing the equation of the tangent line at "a".

At x = a, y = f(a) and the slope of the tangent line is f'(a).

So, in point slope form, the tangent line has equation

y − f(a) = f'(a)(x − a)

The linearization solves for y by adding f(a) to both sides

f(x) = f(a) + f'(a)(x − a).

Given that,

f(3) = 2,

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x = 2.85

Therefore,

f(x) = f(a) + f'(a)(x − a)

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f(2.85) = 2 + 5×-0.15

f(2.85) = 2 - 0.75

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5 0
3 years ago
What number is the same as 7 tens and 20 ones?<br> What number is the same as 5 tens and 13 ones ?
Elenna [48]
7 tens=10,10....=70
20 ones=1,1....=20
which sum up to be 90
5 tens=50
13 ones=13
=63
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3 years ago
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