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3 years ago

Which equation can be used to calculate the area of the shaded triangle in the figure below?

Mathematics

2 answers:

zzz [600]3 years ago

8 0

Answer:

b. 1/2(12x4) = 24 square feet

Step-by-step explanation:

Using rectangle area formula and considering half of it as shaded:

A = 1/2bh

Given

b = 12 feet, h = 4 feet

The area is:

1/2*12*4 = 24 square feet

Correct option is b.

cricket20 [7]3 years ago

5 0

Do u mean 46 points but who cares

You might be interested in

Write this number in expanded form 683,422

tekilochka [14]

Answer: 600,000+80,000+3,000+400+20+2

Step-by-step explanation:

Mark me as brainliest if this helps!

7 0

3 years ago

The formula for the area A of a trapezoid is A=1/2(b1+b2)h, where b1 and b2 represents the lengths of the bases and h represents

Vsevolod [243]

The answer: [B]: h = 2A / (b1 + b2) .
__________________________________________________________
Explanation:

Given: A = (½) * (b1 + b2) * h ;
________________________________
→Multiply EACH side of the equation by "2", to get rid of the fraction, "½";
____________________________________________________________
→ 2*A = 2 * (½) * (b1 + b2) * h ;

→ 2* A = 1 * (b1 + b2) * h ;

→ 2A = (b1 + b2) * h ;
____________________________
→ Now, divide EACH side of the equation by: "(b1 + b2)" ; to isolate "h" on one side of the equation;
__________________________________________________________
→ 2A / (b1 + b2) = [(b1 + b2) * h] / (b1 + b2) ;

→ 2A / (b1 + b2) = h ; ↔ h = 2A / (b1 + b2) ; which corresponds to:
"Answer choice: [B]" .
_____________________________________________________________

8 0

4 years ago

Solve for x: (x+a)(x-b) = x^2 -1 How do I solve this ?

Sveta_85 [38]

You must factor.

$x^2-1=(x+1)(x-1)$

The factored form is equal to the assigned form.

$(x+1)(x-1)=(x+a)(x-b)$

Values a, b correspond to the factored 1, -1.

Value of x however remains unknown. But we can change that.

Given factored result,

$(x+1)(x-1)$

We can set expression equal to 0 then find such x that when added with number a or b results with 0.

$(x+1)(x-1)=0$

Hence x has 2 solutions.

$x+1=0\Rightarrow\boxed{x_1=-1} \\x-1=0\Rightarrow\boxed{x_2=1}$

Hope this helps.

6 0

3 years ago

Read 2 more answers

C=-7/15 and x=2/5 c-4x write your answer in simplest form

pogonyaev

9514 1404 393

Answer:

-31/15

Step-by-step explanation:

Put the numbers in the expression and do the arithmetic.

$c-4x=-\dfrac{7}{15}-4\cdot\dfrac{2}{5}=-\left(\dfrac{7}{15}+\dfrac{8}{5}\right)\\\\=-\left(\dfrac{7}{15}+\dfrac{24}{15}\right)=\boxed{-\dfrac{31}{15}}$

Your graphing calculator can probably help with this.

5 0

3 years ago

Will mark Brainliest! Find the equation of the line with slope −7 which goes through the point (−5,5).

Savatey [412]

Answer:

y -5 = -7(x +5)

Step-by-step explanation:

The point-slope form of the equation for a line is usually used for this purpose. For point (h, k), the line with slope m through it is given by ...

y -k = m(x -h)

Filling in the given numbers, you get the equation ...

y -5 = -7(x +5)

_____

This can be rearranged to any of several other forms:

y = -7x -30 . . . . . slope-intercept form

7x + y = -30 . . . . standard form

x/(-30/7) + y/(-30) = 1 . . . . . intercept form

4 0

3 years ago