2 years ago

PLS HELP WITH EIGHTH GRADE ALGEBRA

Mathematics

2 answers:

Katyanochek1 [597]2 years ago

8 0

Answer:

i think its -13/10

Step-by-step explanation:

Natasha_Volkova [10]2 years ago

7 0

Answer:

-13/10

Step-by-step explanation:

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What is the length of AD, in centimeters?

LekaFEV [45]

Answer:

AD=2

Step-by-step explanation:

$\frac{6}{12} =\frac{AB}{20} \\AB=\frac{6}{12} \times 20=10\\AD+DF+FB=10\\AD+6+FB=10\\AD+FB=10-6=4\\AD+AD=4 ( \because ~FB=AD )\\2AD=4\\AD=4/2=2$

8 0

3 years ago

Read 2 more answers

The line integral of xydx×x^2y^3dy where c is the triangle with points (0,0) (1,0) (1,2) using green's theorem

lyudmila [28]

If $\mathcal C$ is the boundary of the triangle $D$ , then by Green's theorem

$\displaystyle\int_{\mathcal C}xy\,\mathrm dx+x^2y^3\,\mathrm dy=\iint_D\left(\frac{\partial(x^2y^3)}{\partial x}-\frac{\partial(xy)}{\partial y}\right)\,\mathrm dA$
$=\displaystyle\int_{x=0}^{x=1}\int_{y=0}^{y=2x}(2xy^3-x)\,\mathrm dy\,\mathrm dx$
$=\displaystyle\int_{x=0}^{x=1}x\int_{y=0}^{y=2x}(2y^3-1)\,\mathrm dy\,\mathrm dx$
$=\displaystyle\int_{x=0}^{x=1}x(8x^4-2x)\,\mathrm dx=\frac23$

4 0

3 years ago

The ratio of susan's money to isabella's money is 2:11. if susan $12, how much money does isbella have?

valentina_108 [34]

If Susan had 2$ and got to 12$ we need to find what multiplied by 2 = 12. So, 12/2=6
If 6x2=12 then 11x6=66
66$

7 0

3 years ago

How would I answer this question? Can someone please help me, and explain why. Thank you.

Serjik [45]

Can you tell me what you need help because it doesn't says

4 0

3 years ago

Solve the system by substitution.<br> y=6x<br> y=3x+21<br> ( , )

Dimas [21]

Answer:

(7,42)

Step-by-step explanation:

Imput the 6x for the Y:

6x=3x+21

move the variable to the left

6x-3x=21

collect like terms:

3x=21

divide both sides by 3x and youll get this for X

x=7

Imput x=7 into the equation

Y=6x7

solve:

y=42

6 0

3 years ago