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Contact [7]
3 years ago
13

The base of a right triangle is 18 cm, and the height is 5 cm. What is the area of the triangle?

Mathematics
2 answers:
n200080 [17]3 years ago
7 0

Answer:

45 cm

Step-by-step explanation:

Finding the area of a right triangle is like finding the area of a rectangle, only half. You multiply the base by the height, which would be 90 cm in this case, then divide this by half. So, the area would be 45 cm^2.

Doss [256]3 years ago
3 0

Answer:

45 cm^2

Step-by-step explanation:

The area of a triangle can be found using:

a= (b*h)/2

We know the base is 18 cm and the height is 5 cm. Therefore, we can substitute 18 in for b, and 5 in for h.

a=(18*5)/2

Multiply 18 and 5 first

a=90/2

Divide 90 by 2

a=45

So, the area is 45 cm^2

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Determine the equation of the circle with radius 99 and center (-1,-8)(−1,−8).
kumpel [21]
<h2>Equations of Circles</h2>

Generally, you'd see the equation of a circle organized in the following format:

(x-h)^2+(y-k)^2=r^2

  • (h,k) is the center
  • r is the radius

To determine the equation given the center and the radius:

  1. Plug both pieces of information into the general equation
  2. Simplify

<h2>Solving the Question</h2>

We're given:

  • Radius: 99
  • Center: (-1,-8)

Plug the radius and center into the equation as r and (h,k):

(x-(-1))^2+(y-(-8))^2=99^2\\(x+1)^2+(y+8)^2=9801

<h2>Answer</h2>

(x+1)^2+(y+8)^2=9801

7 0
3 years ago
What is x2+5x=0? Please show all work!
Alexxandr [17]
X2+5x=0
7x+0
divide both sides by 7
7 divided by 0 is 0
x=0
0=0
7 0
4 years ago
Read 2 more answers
R
wolverine [178]

Answer:

Ivy is 6 years old and Rose is 12 years old.

Step-by-step explanation:

To solve this problem, two variables are necessary since we have two unknown variables: Ivy's age and Rose's age.

Ivy's age will be x

and Rose's age will be y

"Ivy is half as old as her sister":

x=\frac{y}{2}

this will be our <u>fist equation.</u>

"In six years, Ivy will be two-thirds as old as Rose"

in six years Ivy will have x+6 years, and Rose will have y +6 years, so for this sentence we have the equation:

x+6=\frac{2}{3}(y+6)

this will be our <u>second equation.</u>

Substituting the value of x from the first equation into the second, and solving for y(Rose):

\frac{y}{2}+6=\frac{2}{3} (y+6)\\\frac{y+12}{2} =\frac{2}{3} (y+6)\\y+12=\frac{4}{3} (y+6)\\3(y+12)=4(y+6)\\3y+36=4y+24\\36-24=4y-3y\\12=y

Rose is 12 years old.

and Ivy (using the fist equation):

x=\frac{12}{2}=6

Ivy is 6 years old.

6 0
4 years ago
25) There are 200 students in 6th periodlunch. The ratio of 7th graders to 8thgraders is 4 to 5. What percent of thestudents are
Sergeu [11.5K]
89% I.e C should be the answer I hope it helps you . it should be 4+5=9 4÷9×200=88.8% approximately 89%
4 0
4 years ago
Determine the missing side length
soldier1979 [14.2K]

Answer:

√85

Step-by-step explanation:

The given shape is a right angled triangle.

Let the missing side length be " x ".

By Pythagoras theorem,

x² = 6² + 7²

x² = 36 + 49

x² = 85

x = √85

Therefore, the missing side length be √85.

8 0
3 years ago
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