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
myrzilka [38]
3 years ago
10

Area of triangle=42, the width is x+3 and the length is 2x+8, find the value of x

Mathematics
1 answer:
beks73 [17]3 years ago
8 0

Step-by-step explanation:

Area of triangle = 1/2 × the width × the length

42 = 1/2(x+3)(2x+8)

42 = 1/2×2×(x+3)(x+4)

42 = (x+3)(x+4)

(x+3)(x+4) = 42

x² + 7x + 12 = 42

x² + 7x + 12 - 42 = 0

x² + 7x - 30 = 0

(x-3)(x+10) = 0

x = 3, -10

x can't be -10 because the width and the length should be only + values

x = 3

You might be interested in
51, 70, 60, 68, 69, 39, 53, 46, 81, 76, 48, 22, 23, 54, 48, 65, 39, 59, 55, 46
7nadin3 [17]

Answer:

22,23 i think but not sure

8 0
2 years ago
Match the graph with its equation.
hram777 [196]
The equation to this is A 5X+4Y=-20
5 0
3 years ago
Help pls this is really hard and I’ve been doing this for a long time
Mashutka [201]

Answer:

it would most likely land on green because of the fact that there is more green and i think that the next possibility would be yellow

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Female III-4 is pregnant via male III-5. The owner of this breeding pair wants to know the probabilities of several possible out
faust18 [17]

Answer: the following are required for IV-3 to have condition

Explanation:

-II-4 passes an X b chromosome to III-4 (probability = 1/2).

-If III-4 has the genotype X B X b (accounted for by the above probability), then she passes an X b chromosome to IV-3 (probability = 1/2).

-III-5 passes a Y chromosome to IV-3 (probability = 1/2).

All of these requirements are needed in sequence, so you apply the product rule here, too (1/2 x 1/2 x 1/2 = 1/8).

Once the individual probabilities are known, the sum and/or product rules can be used for various combinations (both conditions, either condition, etc.).

6 0
3 years ago
Which exponential function has the greatest average rate of change over the interval [0, 2]? A. B. x 0 1 2 3 g(x) 8 10 C. D. An
Anna007 [38]

Answer:

Step-by-step explanation: i need help

7 0
3 years ago
Other questions:
  • Connie says that main st appears to be parallel to elm st is connie correct
    6·1 answer
  • 0.2 is 10 times as much as ?? and <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B10%7D%20" id="TexFormula1" title=" \frac
    12·1 answer
  • 8;12 Greatest common factor what is the answer
    14·1 answer
  • A local grocery store is advertising a discount of 20% off a large bag of peaches, which normally costs $5.
    9·2 answers
  • Which graph represents 4x + 7y &lt; -21
    15·1 answer
  • PLEASE HELPPPP WITH MATHH
    12·1 answer
  • Please help if u get these all right i will mark brainliest
    6·2 answers
  • I need help asap deadline 1600
    14·1 answer
  • Help please, I suck at maths
    12·2 answers
  • Find the equation of a line?​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!