Ask question

Ask question

All categories

2 years ago

5

Please show your work and make sure that you don't answer unless you are 100% sure that your information is accurate. Topic: Geo

metry

2 answers:

fenix001 [56]2 years ago

8 0

4x40= 160
6x40= 240
160/12= 13.33
240/12= 20
13.33x20= 266.6

The answer is 266.6 square feet

Mama L [17]2 years ago

4 0

266.6 feet is the answer the dude up top showed his work

You might be interested in

How do the expressions 8+k2−6 and 8(k+2)−4k compare when k = 7?

Andreas93 [3]

Answer:

8+k2-6>8(k+2)-4k

Step-by-step explanation:

8+7×2-6 and 8(7+2)-4×7

8+14-16 and (56+16)-28

6 and 44

8 0

2 years ago

Evaluate the expression 2n, if n = 4. first answer gets brainlist i'm on my exam now so im serious.

DedPeter [7]

Answer:

The answer is 8. 2n means 2*n, which is 2*4.

Step-by-step explanation

4 0

3 years ago

Read 2 more answers

Clarity needs 225% more turkey the original recipe is 2 and a half how much turkey is that

pantera1 [17]

Answer:

5/2

Step-by-step explanation:

2 + 1/2

4/2 + 1/2 = 5/2

3 0

2 years ago

Sum of 4x^3+2x^2-4x+3 and 7x^3-4x+7x+8

Flura [38]

Answer:

11x^3−2x^2+3x+11 this is the correct answer

3 0

3 years ago

The angle between a diagonal and the longer base of the isosceles trapezoid MNFD is 45°. NK is an altitude to the longer base. I

Elanso [62]

Answer:

$NK \approx 7.001$ , $MK = 2$ , $MF \approx 7.001$ , $A_{AMNFD} = 49.007$

Step-by-step explanation:

According to the statement, we find the following inputs:

$\angle MDK = \angle DMF = 45^{\circ}$ (Due to the condition of isosceles trapezoid)

$MD = 9$

$NF = 5$

Given than longer base and shorter base are parallel to each other, we conclude that:

$\angle KND = 180^{\circ} -\angle NKD - \angle KDN$

$\angle KND = 180^{\circ}-90^{\circ}-45^{\circ}$

$\angle KND = 45^{\circ}$

$\angle FND = 90^{\circ}-\angle KND$

$\angle FND = 45^{\circ}$ (By definition of complementary angles)

$\angle FND = \angle NFM = 45^{\circ}$ (Due to the condition of isosceles trapezoid)

$\angle MDK = \angle DMF = \angle FND = \angle NFM = 45^{\circ}$

$\angle NOF = \angle MOD = \angle MOF = \angle FOD = 90^{\circ}$ (By definitions of complementary and vertical angles and the theorem that states that sum of internal angles within a triangle equals 180º)

$MO = DO = \frac{\sqrt{2}}{2}\cdot MD$ (By theorem for 45-45-90 Right Triangle)

$NO = OF = \frac{\sqrt{2}}{2}\cdot NF$ (By theorem for 45-45-90 Right Triangle)

If we know that $MD = 9$ and $NF = 5$ , then we find that:

$DO = MO \approx 6.364$

$NO = OF \approx 3.536$

The value of MK is obtained from the following relationship:

$MK = \frac{MD-NF}{2}$

$MK = \frac{9-5}{2}$

$MK = 2$

And the value of KD is calculated from this expression:

$KD = MD-MK$

$KD = 9-2$

$KD = 7$

Now by the Pythagorean Theorem we find that:

$NK = \sqrt{(NO+DO)^{2}-KD^{2}}$

$NK = \sqrt{9.9^{2}-7^{2}}$

$NK \approx 7.001$

And considering the symmetry characteristics of an isosceles trapezoid, we determine MF:

$MF = NO + DO \approx 7.001$

Lastly, the area of the isosceles trapezoid is determined by the following formula:

$A_{AMNFD} = NF\cdot NK + MK\cdot NK$

$A_{AMNFD} = NK\cdot (NF+MK)$

If we know that $NK \approx 7.001$ , $NF = 5$ and $MK = 2$ , then the area of the figure is:

$A_{AMNFD} = (7.001)\cdot (5+2)$

$A_{AMNFD} = 49.007$

8 0

2 years ago