3 years ago

Find the area of the triangle. 294 m2 367.5 m2 490 m2 980 m2

Mathematics

1 answer:

geniusboy [140]3 years ago

4 0

Answer:

294 m2

Step-by-step explanation:

$\frac{hxb} 2$ so therefore $\frac{28x21}{2} = 294$

You might be interested in

a plane traveled 5185 miles with the wind in 8.5 hours and 4845 miles against the wind in the same amount of time. find the spee

Artyom0805 [142]

You can use scale to solve. 5185/8.5=610

4845/610= about 8 hours.

6 0

3 years ago

What is the surface area of the rectangular prism formed from this net?

Reika [66]

E is the answer to this question

6 0

2 years ago

A problem contains the points (0,0),(1,-2) and (-1,-4). What is the equation of this parabola in standard form?

Bas_tet [7]

Answer:

The general equation of the parabola y = -3 x² + x

Step-by-step explanation:

Step(i):-

Given points are (0,0) , (1, -2) and ( -1 , -4 )

Given the standard parabola

y = ax²+ b x + c ...(i)

Passing through the point (0,0)

c = 0

Passing through the point (1,-2)

-2 = a(1) +b(1)

a + b = -2 ...(ii)

Passing through the point (-1, -4)

- 4 = a - b

a - b = -4 ...(iii)

Step(ii):-

Adding (ii) and (iii) equations , we get

2 a = -6

a = - 3

substitute a = - 3 in equation (ii)

-3 + b =-2

b = -2 + 3 = 1

Final answer:-

The general equation of the parabola

y = ax²+ b x + c

y = -3 x² + x + 0

y = -3 x² + x

4 0

3 years ago

Find the value of the variables. If your answer is not an integer, leave it in simplest radical form.

stepladder [879]

We know that we can use trigonometry to solve for x here.

If we use tangent, we can solve for x directly:

$tan(theta)=\frac{opposite}{adjacent}$

$tan(60)=\frac{x}{6}$

$6*tan(60)=x$

$x=6\sqrt{3}$

So therefore we have solve for x, which is D) $6\sqrt{3}$ .

4 0

3 years ago

Help meee. Multiply the polynomials.

ryzh [129]

So even just multiplying 3x2 by 6x we know it has to be D because it’s the inly one with 18x3 but i went ahead and worked out the whole problem using the box method

it’s in the attached picture

6 0

3 years ago