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2 years ago

(6x -8)(2x -3) B) 12x2 + 24 U) 70x L) 8x2 - 21x + 11 E) 12x2 -34x + 24

Mathematics

2 answers:

deff fn [24]2 years ago

5 0

Answer is E!
12x^2-34x+24

ss7ja [257]2 years ago

4 0

Answer:

E) 12x^2 - 34x +24

Step-by-step explanation:

6x times 2x Is 12x^2

6x times -3 = -18x

-8 times 2x = -16x

-8 times -3 = 24

combine terms and you get the answer

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Mr. Barth is painting an arrow on the school parking lot. He draws the edges between the following points on the coordinate plan

andreyandreev [35.5K]

Answer:

70 square units

Step-by-step explanation:

I have plotted the points on the coordinate system and connected roughly using a red line. Image is attached.

The arrow created, consists of a TRIANGLE and a RECTANGLE. The area of the arrow would be:

Area of Arrow = Area of Triangle + Area of Rectangle

Area of Triangle = 0.5 * base * height

Base is 12 units

Height is 7 units, so

Area of Triangle = 0.5 * 12 * 7 = 42

Now,

Area of Rectangle = length * height

Length is 7

Height is 4

Area of Rectangle = 7 * 4 = 28

Area of Arrow = 42 + 28 = 70 square units

4 0

2 years ago

Conor has a roll of fence that is 25 feet long. He needs 8 yards of fence to go around a flower bed. Does he have enough fence t

vlabodo [156]

Answer:

Yes he has enough fence to go round the flower bed.

Step-by-step explanation:

1 yard = 3 feet

25 feet = 25/3 = 8.33 yards

Yes he has enough fence to go round the flower bed.

8 0

2 years ago

Find the area of the triangle with the given measurements. Round the solution to the nearest hundredth if necessary. A = 46°, b

horrorfan [7]

We will use the law of cosines
side a² = b² + c² -2bc • cos(A)
side a² = 729 + 196 -2*27*14 * cos (46)
side a² = 925 -(756 * 0.69466)
side a² = 399.83704 
side a = 19.995925585 
We could round that to 20
a = 20 b = 27 c =14

We can calculate a triangle's area when we know all 3 sides by using Heron's Formula
area = square root (s • (s - a) • (s - b) • (s - c))

where s is the semi-perimeter 
semi-perimeter = (side a + side b + side c) ÷ 2
s = (20 + 27 + 14) / 2
s = 30.5
Now we use Heron's Formula
area = square root (s • (s - a) • (s - b) • (s - c))
area = square root (30.5 • (30.5 - 20) • (30.5 - 27) • (30.5 - 14))
area = square root (30.5 • (10.5) • (3.5) • (16.5))
area = square root (18494.4375)
 area = 135.9942553934 which rounds to
136 square feet
Source:
http://www.1728.org/triang.htm

7 0

1 year ago

Theo recorded the means and mean absolute deviations of his language arts and Biology scores. He found the difference in the mea

Rina8888 [55]

The answer is actually A.2 because I just took the test.

8 0

2 years ago

Read 3 more answers

Two sides of an obtuse triangle measure 9 inches and 14 inches. The length of longest side is unknown. What is the smallest poss

julia-pushkina [17]

Answer:

17 inches

Step-by-step explanation:

An obtuse triangle is the triangle in which one of the side is the longest. It contains an obtuse angle and the longest side is the side that is opposite to the vertex of the obtuse angle.

Let the three sides of the obtuse triangle be a, b and c respectively with c as the longest side. Let a = 9 inches and b = 14 inches.

Now we know that for an obtuse triangle,

$c^2 > a^2 +b^2$