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3 years ago

ANSWER FOR BRAINLIST! has to be right answer tho

Mathematics

2 answers:

Inga [223]3 years ago

6 0

Answer:

406 meters squared

Step-by-step explanation:

14 times 5= 70 (Section 1)

21 times 16= 336 (Section 2)

(Combine Sections 1 and 2)

336 + 70= 406

*I'm not 100% certain that this is correct, but I'm pretty sure it is*

bekas [8.4K]3 years ago

5 0

Answer: $406m^2$

Step-by-step explanation:

Area of a parallelogram: $A=b*h$

Area of a rectangle: $A=l*w$

Find these 2 separate areas and add them together.

Parallelogram:

Base: 21m

Height: 16m

----------------------------------------------------------------------------------------------

$A=b*h\\A=(21m)(16m)\\A=336m^2$

----------------------------------------------------------------------------------------------

Rectangle:

Length: 14m

Width: 5m

----------------------------------------------------------------------------------------------

$A=l*w\\A=(14m)(5m)\\A=70m^2$

-----------------------------------------------------------------------------------------------

Area of the composite figure: $A_p+A_r=A_c_f\\336m^2+70m^2=A_c_f\\Area_c_f=406m^2$

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The two triangles are similar. What is the value of x?

Ghella [55]

Answer:

x=5

Step-by-step explanation:

We can write ratios to help us solve

4x 12 +3

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3x+1 12

Using cross products

4x*12 = (3x+1) * (15)

48x = 45x +15

Subtract 45x from each side

3x =15

Divide by 3

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5 0

3 years ago

Further mathematics: Find the derivative of the function x^2 y + (xy)^3 +3x=0 at (-1 , 3)

vesna_86 [32]

Answer:

Step-by-step explanation:

Implicit differentiation:

x^2 y + (xy)^3 + 3x = 0

x^2 y + x^3y^3 + 3x = 0

Using the product rule:

2x* y + x^2*dy/dx + 3x^2 y^3 + x^3* (d(y^3)/dx) + 3 = 0

2xy + x^2 dy/dx + 3x^2 y^3 + x^3* 3y^2 dy/dx + 3 = 0

dy/dx(x^2 + 3y^2x^3) = (-2xy - 3x^2y^3 - 3)

dy/dx= (-2xy - 3x^2y^3 - 3) / (x^2 + 3y^2x^3)

At the point (-1, 3).

the derivative = (6 - 81 - 3)/(1 -27)

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8 0

2 years ago

Read 2 more answers

Rewrite the equation by completing the square.<br> x^2 + 2x – 48 = 0

slamgirl [31]

Answer:

(x+1)^2 = 49

x = 6 x = -8

Step-by-step explanation:

x^2 + 2x – 48 = 0

Add 48 to each side

x^2 + 2x =48

Take the coefficient of x

Divide by 2

2/2=1

Square it

1^2 =1

x^2 + 2x +1=48+1

x^2 +2x+1 = 49

(x+1)^2 = 49

Take the square root of each side

sqrt((x+1)^2) =±sqrt( 49)

x+1 = ±7

Subtract 1 from each side

x+1-1 = -1 ±7

x = -1+7 x = -1 -7

x = 6 x = -8

3 0

4 years ago

1/2x+1/4y=6. 1/5x+1/3y=1

Ierofanga [76]

$\frac{1}{2}x+\frac{1}{4}y=6 \ \ \ |\times 2 \\
\frac{1}{5}x+\frac{1}{3}y=1 \ \ \ |\times (-5) \\ \\
x+\frac{1}{2}y=12 \\
\underline{-x-\frac{5}{3}y=-5} \\
\frac{1}{2}y-\frac{5}{3}y=12-5 \\
\frac{3}{6}y-\frac{10}{6}y=7 \\
-\frac{7}{6}y=7 \\
y=7 \times (-\frac{6}{7}) \\
y=-6 \\ \\
x+\frac{1}{2}y=12 \\
x+\frac{1}{2} \times (-6)=12 \\
x-3=12 \\
x=12+3 \\
x=15 \\ \\
\boxed{(x,y)=(15,-6)}$

3 0

3 years ago

Read 2 more answers

Mike earns $11.50 an hour <br><br> Write a linear function for the given in formation.

Otrada [13]

Answer: y = 11.50x

Step-by-step explanation:

linear function format:

y = mx + b

since its linear and it starts from 0, b is 0 since there is no addon

y = mx

x is the number of hours, y is the payment incrementing by 11.50 per hour, making 11.50 our gradiant

So y = 11.50x

1 hour = 11.50 * 1

2 hour = 11.50 * 2 and so on

5 0

2 years ago