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2 years ago

PLEASE SOLVE THE AREA OF THE TRAPAZIODSHOW WORK

Mathematics

2 answers:

Nikitich [7]2 years ago

8 0

Answer:

40.5

Step-by-step explanation:

Basically use the formula 1//2(base1+base2)*height. So it would be 1/2(4.5+9)*6 which would simplify to 40.5.

sveticcg [70]2 years ago

3 0

40.5, add your two bases, divide by 2, then multiply by the height to get 40.5

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Solving Quadratic Equations using the Square Root Property

Afina-wow [57]

Answer:

$x = -2$ or $x = -5$

Step-by-step explanation:

You need to complete the square before you can take the square root of both sides.

$x^2 + 7x + 10 = 0$

Subtract 10 from both sides.

$x^2 + 7x = -10$

To complete the square, you need to add the square of half of the x-term coefficient to both sides.

The x-term coefficient is 7. Half of that is 7/2. Square it to get 49/4. Now we add 49/4 to both sides of the equation.

$x^2 + 7x + \dfrac{49}{4} = -10 + \dfrac{49}{4}$

$(x + \dfrac{7}{2})^2 = -\dfrac{40}{4} + \dfrac{49}{4}$

$(x + \dfrac{7}{2})^2 = \dfrac{9}{4}$

Now we use the square root property, if

$x^2 = k$ , then

$x = \pm \sqrt{k}$

$x + \dfrac{7}{2} = \pm \sqrt{\dfrac{9}{4}}$

$x + \dfrac{7}{2} = \pm \dfrac{3}{2}$

$x + \dfrac{7}{2} = \dfrac{3}{2}$ or $x + \dfrac{7}{2} = -\dfrac{3}{2}$

$x = -\dfrac{4}{2}$ or $x = -\dfrac{10}{2}$

$x = -2$ or $x = -5$

5 0

2 years ago

Fred orders pictures from a photographer. Each picture costs $5.50. A one-time shipping fee of $4.25 is added to the cost of the

Alexus [3.1K]

Answer:

Fred ordered 12 pictures

Step-by-step explanation:

70.25-4.25 (one time shipping fee) =66

then you take 66 and divide it by the cost of each picture

66/5.50= 12 pictures

3 0

2 years ago

Read 2 more answers

How many moles of mgci2 are there in 318 g of the compound?

shusha [124]

Answer:

there are 3.3399 moles in 318 grams! ✔️

Step-by-step explanation:

So we know that 100 grams MgCl2 to mol = 1.0503 mol.

Therefore, to find the number of moles in 318g of the compound, we use the rule of three:

if 1.0503 mol -------------> 100 grams

X <------------- 318 grams

The solution is: X = (318*1.0503)/100 = 3.3399 mol.

Summarizing, there are 3.3399 moles in 318 grams! ✔️

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2 years ago

Evaluate the algebraic expression 18 + (- 31) =

frosja888 [35]

Answer:

-13

Step-by-step explanation:

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2 years ago

Find the surface area of each figure. Round answers to two decimal places. Use 3.14 for pi

ELEN [110]

Answer:

the top wpuld be 73.14 and i cant see the numbers at the bottom

Step-by-step explanation:

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2 years ago

PLEASE SOLVE THE AREA OF THE TRAPAZIOD**SHOW WORK**​

PLEASE SOLVE THE AREA OF THE TRAPAZIODSHOW WORK