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3 years ago

The figure below is made up of a rectangle and a trapezoid.

Mathematics

2 answers:

Bas_tet [7]3 years ago

8 0

I think it would be C

lesya692 [45]3 years ago

4 0

The answer is c 120cm2

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Which are the soultions of the quadratic equation? x^2=7x+4

Vesnalui [34]

Answer:

Answer in image below

Step-by-step explanation:

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3 years ago

Solve the following system of equations for a and for b:

viktelen [127]

Answer:

$a=3\\b=1$

Step-by-step explanation:

$9a+3b=30\\8a+4b=28$

Let's solve the second equation for a to later on replace it in the first equation.

$8a+4b=28\\8a=28-4b\\a=\frac{28-4b}{8}$

Now plug this into the first equation.

$9a+3b=30\\9(\frac{28-4b}{8})+3b=30$

Distribute the 9

$(\frac{252-36b}{8}) +3b=30$

Break down the fraction.

$\frac{252}{8}-\frac{36b}{8}+3b=30$

Simplify.

$\frac{63}{2}-\frac{9}{2}b+3b=30$

Subtract $\frac{63}{2}$

$-\frac{9}{2}b+3b=30-\frac{63}{2}$

Combine like terms.

$\frac{-9+2*3}{2}b=\frac{30*2-63}{2}$

$\frac{-9+6}{2}b=\frac{60-63}{2}$

$\frac{-3}{2}b=\frac{-3}{2}$

Muliply by the reciprocal or inverted fraction next to b.

$(-\frac{2}{3})(-\frac{3}{2}) b=-\frac{3}{2}(-\frac{2}{3})$

$b=1$

Now plug this value into any of the equations to find the value of a.

$8a+4b=28\\8a+4(1)=28\\8a+4=28\\8a=28-4\\8a=24\\a=\frac{24}{8}\\ a=3$

5 0

4 years ago

(-9,5); m=4 right and equation in point slope form of the line that passes through the given point and with the given slope M

NikAS [45]

Answer:

Slope form of line y = 4x +41

Step-by-step explanation:

m= 4

The y-intercept of the line that passes through the given point (-9,5) is

5 = 4(-9) + b

b= 5 +36

b=41

The equation of the line that passes through the given point (-9,5) is

y =mx +b

y = 4x +41

6 0

2 years ago

How many solutions does 8x = 56 have?

OlgaM077 [116]

There is only one answer, x=7

3 0

3 years ago

Read 2 more answers

Please Help!! Brainliest Answer! Thank you!

I am Lyosha [343]

Answer:

x=4.5

Step-by-step explanation:

The sum of all the angles in a square=360°

20(4.5)=90

90×4=360

4 0

3 years ago

Read 2 more answers