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3 years ago

I will mark brainliest if correct please answer fast I will give 10 points to the first person who answers

Mathematics

1 answer:

attashe74 [19]3 years ago

4 0

Answer:

$99\ in^{2}$

Step-by-step explanation:

Area of any triangle could be always calculated as base length multiplied by the height perpendicular to the aforementioned base divided by 2. Therefore:

A = 18 * 11 / 2 = 198 / 2 = 99

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I need help plzzzzzzzzzz

Artist 52 [7]

Answer:1014

Step-by-step explanation:

1014 I think this because 2029 is 1014.5 and they can’t have half a marble so they rack get about 1014

8 0

3 years ago

Decide if each number on the list is a perfect cube

katrin2010 [14]

Answer:

Only D,F, and G are perfect cubes.

Step-by-step explanation:

A) Technically not a perfect cube.

B) Not a perfect cube

C) Not a perfect cube

D) Yes. 3*3=9

E) Not a perfect cube

F) Yes. 8*8=64

G) Yes. 10*10=100

H) Not a perfect cube

7 0

3 years ago

The base of a triangle is 9/4 times of its height. If the area of triangle is 144 cm2. Find the height and the base.

Mazyrski [523]

Step-by-step explanation:

Given that the base of triangle is 9/4 times of its height . And area is 144 cm² . Let the height be h , then its base be 9h/4 .

• According to Question :-

$\tt\to Area_{(\triangle)}=\dfrac{base\times height}{2}\\\\\tt\to 144cm^2 = \dfrac{9h\times h}{4\times 2 } \\\\\tt\to h^2 =\dfrac{12\times 12 \times 2 \times 2 }{3\times 3 }\\\\\tt\to h =\sqrt{\dfrac{12\times 12 \times 2 \times 2 }{3\times 3 }}\\\\\tt\to h =\dfrac{(12)(2)}{3} \\\\\tt\to \boxed{\orange{\tt h = 8 cm }}$

Therefore ,

Height = h = 8cm .
Base ,= 9h/4 = 18cm .

5 0

3 years ago

Please Help! Best gets Brainlest

Len [333]

Answer:

A. g=11

Step-by-step explanation:

We want to find which choice makes the equation true. Let's plug in each answer choice.

A. g=11

26=7(11-9)+12

26= 7(2)+12 Solve inside the parentheses.

26= 14+12 Multiply 7 and 2.

26= 26 Add 14 and 12.

This answer must be correct, but let's check the other choices .

B. g=12

26=7(12-9)+12

26= 7(3)+12 Solve inside the parentheses.

26= 21+12 Multiply 7 and 3.

26≠33 Add 14 and 12.

This choice is not correct.

C. g= 13

26=7(13-9)+12

26= 7(4)+12 Solve inside the parentheses.

26= 28+12 Multiply 7 and 4.

26≠40 Add 28 and 12.

This is also not correct.

D. g= 14

26=7(14-9)+12

26= 7(5)+12 Solve inside the parentheses.

26= 35+12 Multiply 7 and 5.

26≠47 Add 35 and 12.

This choice is not correct either.

The value of g that make the expression 26=7(g-9)+12 a true statement is A. g=11.

5 0

3 years ago

A small painting has an area of 400 cm^2. The length is 4 more than twice the width. Find the dimensions of the pool. Solve by c

anygoal [31]

A = l*w
l = 2w + 4
400 = (2w + 4)*w
0 = 2w^2 + 4w - 400

Then use the quadratic equation where a=2, b=4, and c=-400.

w = 13.2
l = 30.4

6 0

3 years ago