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Marta_Voda [28]
3 years ago
13

The risultate please

Mathematics
1 answer:
Alenkinab [10]3 years ago
6 0

Answer:

See below in bold.

Step-by-step explanation:

√(16 * 49)

= √16 *√49

= 4*7 = 28.

√(225 : 9)

= √225 : √9

= 15:3.

√(0.81) = 0.9.

√(441/25)

= √441/√25

= 21/5.

√(7056 : 36*9

= 84: 6*3

= 84:18

= 14:3

√(5^2 * 2^2)

= 5 * 2

= 10.

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kramer

Answer:

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Step-by-step explanation:

3 0
3 years ago
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Someone help ASAP!!!!!!
Alchen [17]

Answer:

Length, l = 11 ft.

Width, w = 9 ft.

Step-by-step explanation:

From the given data, the area of the rectangle = 99 ft².

Area of the rectangle = Length, l X Width, w

Here, Length, l = 7 more than twice the width

⇒       Length, l = 7 + 2w

Therefore, Area, A = 99 = (7 + 2w)w

⇒ 99 = 7w + 2w²

⇒ 2w² + 7w - 99 = 0

Solve the Quadratic equation using the formula: x = $ \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} $ for the quadratic equation ax² + bx + c = 0.

Therefore, w = $ \frac{-7 \pm \sqrt{7^2 -4(2)(-99)}}{2(2)} $

$ = \frac{-7 \pm \sqrt{49 + 8(99)}}{4} $

$ = \frac{-7 \pm + \sqrt{841}}{4} $

Since, $ \sqrt{841} = 29 $ we get:

$ w = \frac{-7 \pm 29}{4} $

This gives two values of 'w', viz., w = $ \frac{-7 - 29}{4} $, $ \frac{-7 + 29}{4} $

$ \implies w = \frac{22}{4}, \frac{-36}{4} $

⇒ w = $ \frac{22}{4} $, -9.

We take the integer values.

If w = -9, then l = 2(-9) + 7

⇒ l = - 18 + 7 = - 11

Therefore, the length, l of the rectangle = - 11 ft.

and the width, w of the rectangle = - 9 ft.

Hence, the answer.

3 0
2 years ago
to the nearest tenth, what is the volume in cubic inches of the triangular prism below? 6 in (height) 3 in (width) 1.5 in (base)
babymother [125]
To find the volume, use this formula:

A = 0.5bhw
A = 0.5(1.5)(6)(3)
A = 0.5(9)
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3 0
3 years ago
6.<br> What is the midpoint of the line segment whose<br> endpoints (7,-4) and (-3, -2)?<br> are
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Answer: (2, -3)

Step-by-step explanation:

To find the the answer, you will need to use the midpoint formula, which is as following:

(x₁+x₂/2, y₁+y₂/2)

Since we have two coordinates, let's substitute them into the equation.

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We should first add 7 and -3 together, as well as -4 and -2.

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We then divide 4 and -6 by 2. This would give us our midpoint coordinate.

(2, -3)

6 0
2 years ago
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Check the picture below.

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3 years ago
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