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3 years ago

What is the missing number in the number sentence ?

2 answers:

5 0

Hello there.

Question: <span>What is the missing number in the number sentence ?

Answer: It would be 4.
Both sides should be equal therefore the number you need is 4.

</span>Hope This Helps You!
<span>Good Luck Studying ^-^</span>

balu736 [363]3 years ago

4 0

The parentheses don't really matter, due to the whole equation is multiplication. So:
(8 * 4) * 6 = 8 * ( ? * 6)
The number missing on the right would be 4.

Hope this helps!

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What is the sum of the roots of the polynomial shown below? x^3+2x^2-11x-12

tekilochka [14]

The answer to your question is -2.

8 0

4 years ago

Cynthia Besch wants to buy a rug for a room that is 20 ft wide and 26 ft long. She wants to leave a uniform strip of floor aroun

Radda [10]

Answer:

16 ft by 22 ft

Step-by-step explanation:

The Area of the carpeting she must have = 352 ft²

To solve for this, we have:

Length × Width = Area of a rectangle

352ft² = Length × Width

352ft² = (20 - x) (26 - x)

352 = 520 - 20x - 26x + x²

352 = 520 - 46x + x²

Collect like terms

x² - 46x + 520 - 352

x² - 46x + 168

We factorise

x² - 4x - 42x + 106

(x² - 4x) -(42x + 106)

x(x - 4) -42(x - 4)

(x - 4)(x - 42)

x - 4 = 0, x = 4

x - 42 = 0, x = 42

We choose the least value for x

Hence, x = 4

Length = 20 - 4 = 16ft

Width = 22- 4= 22ft

The dimensions the rug should have is 16ft by 22 ft, meaning 16ft wide and 22ft long

4 0

3 years ago

A prop for the theater club’s play is constructed as a cone topped with a half-sphere. What is the volume of the prop? Round you

DedPeter [7]

3.14 x 9^2 x 14/3 = 1186.92

4/3 x 3.14 x 9^3 = 1526.04

1186.92 + 1526.04 = 2712.96 = 2713 cubic inches

3 0

2 years ago

Cynthia Besch wants to buy a rug for a room that is 18 ft wide and 32 ft long. She wants to leave a uniform strip of floor aroun

valina [46]

Answer:

12x26

Step-by-step explanation:

Area of a room A = 18*32 = 576 sq ft

She can leave 6 ft around the rug, so

312 sq ft = 12 * 26

5 0

3 years ago

A, B, and C are pegs on the bank of a canal which has

Elden [556K]

Answer:

116.67 m

Step-by-step explanation:

Two triangles are said to be similar if their corresponding angles are equal and the ratio of their sides are in the same proportion.

From the image attached:

∠A = ∠C = 90° (right angled triangle).

∠ABE = ∠CBD (vertically opposite angles are equal to each other)

The angle-angle similarity postulate states that If two angles of one triangle are equal to two angles of another triangle, then both triangles must be similar. Hence:

Since, ∠A = ∠C and ∠ABE = ∠CBD, we can say that ΔABE and ΔCBD are similar triangles. Since they are similar, the ratio of their corresponding sides is equal. Therefore:

BC / AB = CD / AE

BC = 140 m, AB = 30 m, AE = 25 m

substituting:

140 / 30 = CD / 25

CD = (140 / 30) * 25

CD = 116.67 m

The width of the canal = CD = 116.67 m

7 0

3 years ago