1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ANTONII [103]
2 years ago
5

the height of a triangle is 7cm greater than its base and its area is 15cm squared. find the value of its height

Mathematics
1 answer:
Rudiy272 years ago
5 0

Answer:

Step-by-step explanation:

Let base be b, height be h

h = 7+b or we can say that b = h -7

A = 15 cm²

General formula for area of a triangle

A = b · h

Substitute what we know to find the height h

15 = (h-7) · h

15 = h² -7h

0 = h²-7h -15

h = (7 ±√49 + 4·1·15)/2

h = (7 ±√109)/2

h ≈ -1.72 reject this solution because height cannot be negative

h ≈ 8.72 cm

You might be interested in
Help ????????????????????
IgorLugansk [536]
The perimeter of a triangle is when u add all of the sides together
(8x - 7w) + (2x + 6y) + (3y + 5w) = 
10x + 9y - 2w is ur perimeter

8w + 12x - 9y
8w + 12x - 9y
8w + 12x + 5y
8w + 12x - 9y

the 1st, 2nd, and 4th answer choices are the same....so 3 of them are equal
7 0
2 years ago
What the rule for the transformation is<br>​
AleksandrR [38]
Answer: (x + 3, y - 4)

Explanation: The shape in the middle goes to the right three and down four to match the shape at the bottom
8 0
2 years ago
A school needs 5,000 to buy new books for the library. So far the school has raised 75%
ohaa [14]

Answer:

Results are below.

Step-by-step explanation:

Giving the following information:

Total money needed= $5,000

Percentage raised= 75%

<u>To calculate the amount collected and the difference required, we need to use the following formulas:</u>

Total collected= 5,000*0.75

Total collected= $3,750

Difference= 5,000 - 3,750

Difference= $1,250

4 0
3 years ago
Can someone please help me with math?
Fofino [41]
You most likely will win a token. you have the advantage as the most they can win is 1 token if you lose, but you can win 3 tokens.
6 0
3 years ago
What is the difference between d and 7?
Goryan [66]

Answer:

d - 7

Step-by-step explanation:

The word "difference" tells us that we will be using subtraction. Also, subtraction is not the same if you reverse the terms like, x - 2 and 2 - x are not the same. In your question it say "d and 7" so that's the order we use in the algebraic expression.

3 0
11 months ago
Other questions:
  • Which graph represents (,y)-pairs that make the equation y = 2x true?
    15·1 answer
  • keisha runs each lap in 8 minutes. she will run less than 7 laps today. what are the possible numbers of minutes she will run to
    6·2 answers
  • Evaluate the function at the given value of the independent variable. Simplify the results. (If an answer is undefined, enter UN
    12·1 answer
  • (7y2 - 3y)-(4y2 + 2y'- 2)
    14·1 answer
  • Which of these equations represents a line
    10·1 answer
  • Write y=2/3x+7 in standard form using intergers
    7·1 answer
  • Consider the triangle reduction.
    7·1 answer
  • What is the sum of the first seven ​
    11·1 answer
  •  GEOMETRY)
    11·1 answer
  • Determine if the statement is possible(p) or impossible(i).
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!