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2 years ago

What is 2x+2y if x+2y=6 and x+y=10

Mathematics

1 answer:

irina1246 [14]2 years ago

8 0

X=-2y+6
-2y+6+y=10
-y+6=10
-y=4
y=-4
X=14

2(14) + 2(-4)=28- -8=28+8=36

Answer is 36 I think

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If ED = x + 4 and DB = 3x - 8, find ED, DB, and EB

Tom [10]

Answer:

Part 1) $ED=10\ units$

Part 2) $DB=10\ units$

Part 3) $EB=20\ units$

Step-by-step explanation:

we know that

EB=ED+DB

ED=DB -----> given problem

Substitute the given values and solve for x

$x+4=3x-8$

$3x-x=4+8$

$2x=12$

$x=6$

Find the value of ED

$ED=x+4$

substitute the value of x

$ED=6+4=10\ units$

Find the value of DB

Remember that

ED=DB

therefore

$DB=10\ units$

Find the value of EB

EB=ED+DB

$EB=10+10=20\ units$

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2 years ago

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2. Divide 8x - 4x +1 by x+6

Anvisha [2.4K]

Answer:

$\Large{\bold{\frac{4x\:+\:1}{x\:+\:6}}}$

Step-by-step explanation:

$(8x\:-\:4x\:+\:1) ÷ (x\:+\:6)$
$\frac{8x\:-\:4x\:+\:1}{x\:+\:6}$
$\frac{4x\:+\:1}{x\:+\:6}$

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2 years ago

10/2x5 using order of operations

Jlenok [28]

Answer:

Step-by-step explanation:

10 / 2 = 5 x 5 = 25

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Find the average rate of change of the function over the given interval.

Minchanka [31]

Answer:

Average rate of change = 20.2

Rate of change at the left endpoint : f' (5) = 4t = 20

Rate of change at the right endpoint : f' (5.1) = 4*5.1 = 20.4

Step-by-step explanation:

The average rate of change of the function

F(t) = 2t^2 - 1 , [ 5,5.1 ]

solution

$\frac{f(5.1)-f(5)}{5.1 - 5}$ = $\frac{2*(5.1)^2-1-(2*5^2-1)}{0.1}$ = [ 2 ( 26.01 - 25 ) / 0.1 ]

= 2.02 / 0.1 = 20.2

Rate of change at the left endpoint : f' (5) = 4t = 20

Rate of change at the right endpoint : f' (5.1) = 4*5.1 = 20.4

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frez [133]

Answer:

I believe that its 0.22

Step-by-step explanation:

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