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3 years ago

A computer bracket was supposed to be 4 inches long, but the automated

Mathematics

1 answer:

Lilit [14]3 years ago

6 0

Multiple so it’s 20 Bc 5x4=20 or you would add do the math you will figure it out

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In geometry, Heron's formula (sometimes called Hero's formula), named after Hero of Alexandria, gives the area of a triangle by

uysha [10]

Answer:

C) $6.495\: ft^2$

Step-by-step explanation:

a = 7 ft, b = 3 ft, c = 5 ft (Given)

Therefore, a + b + c = 7 + 3 + 5 = 15 ft

Let's calculate semi Perimeter of the triangle which is given by s

$s =\frac{a+b+c}{2}=\frac{15}{2} = 7.5 \: ft$

Now, by Heron's formula, area of triangle ABC is given as:

$A(\triangle ABC) =\sqrt{s(s-a) (s-b)(s-c)}$

$\therefore A(\triangle ABC) =\sqrt{7.5(7.5-7) (7.5-3)(7.5-5)}$

$\therefore A(\triangle ABC) =\sqrt{7.5(0.5) (4.5)(2.5)}$

$\therefore A(\triangle ABC) =\sqrt{42.1875}$

$\therefore A(\triangle ABC) =6.49519053$

$\therefore A(\triangle ABC) =6.495\: ft^2$

8 0

4 years ago

Helppp please!!!! Thank you!!

vovangra [49]

Answer:first one A

Step-by-step explanation:

4 0

3 years ago

the demand for a product for the last six years has been 15, 15, 17, 18, 20, and 19. The manager wants to predict the demand for

Marta_Voda [28]

Answer and explanation:

Given : The demand for a product for the last six years has been 15, 15, 17, 18, 20, and 19. The manager wants to predict the demand for this time series using the following simple linear trend equation : $tr_t = 12 + 2t$

To find : What are the forecast errors for the 5th and 6th years?

Solution :

Data : 15, 15, 17, 18, 20, and 19.

The simple linear trend equation is given as, $tr_t = 12 + 2t$

For t = 5 years

$tr_t = 12 + 2(5)$

$tr_t = 12 +10$

$tr_t = 22$

Observed $tr_t = 20$

Predicted $tr_t = 22$

Forecast error = Observed – Predicted = 20 – 22 = -2

Absolute forecast error = |-2| = 2 .

For t = 6 years

$tr_t = 12 + 2(6)$

$tr_t = 12 +12$

$tr_t = 24$

Observed $tr_t = 19$

Predicted $tr_t = 24$

Forecast error = Observed – Predicted = 19 – 24 = -5

Absolute forecast error = |-5| = 5.

7 0

4 years ago

Kayla Can buy 2 pounds of bananas for $7. Write an equation to represent the cost , c, for b bananas.

gregori [183]

Well this is kind of difficult because we have no way to determine a constant for each banana; however, we can still formulate an equation to form some sort of solution.

$2 \: lbs \: bananas = 7 \: dollars$
Divide both sides by two:

$1 \: lbs \: bananas = 3.50 \: dollars$

Now, we can continue to go forward as long as know how many pounds each banana bunch weighs and how many bananas are in the bunch.

We could say there are "x" bananas in each pound of bananas:

$x \: bananas \div 1 \: lbs \: bananas = 3.50 \: dollars$
Or:

$b \div 1 \: lbs \: bananas = 3.50c$
Or to isolate "c":

$(b \div 1 \: lbs \: bananas) \div 3.50 = c$

8 0

3 years ago

3. Tell how to convert from an improper fraction to a mixed number.

AveGali [126]

Answer:

Step-by-step explanation:

1. Divide the numerator by the denominator.

2. Write down the whole number answer.

3. Write down any remainder above the denominator.

3 0

3 years ago