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
Mandarinka [93]
3 years ago
11

The perimeter of the equilateral triangle represented the expression 21x + 15. The perimeter is 78 units. Find the value of x an

d the length of each side.
Mathematics
1 answer:
musickatia [10]3 years ago
3 0

Answer: x=42

Step-by-step explanation:

side1=15

side2=21

side3=42

I think my answer will be helpfull

You might be interested in
The value of expression b is eight times the value of expression a. determine what number belongs in the box of expression. expl
klemol [59]
I think it would be 32. This is because you have to make the expression 8 times greater, and 4 times 8 is 32.
5 0
3 years ago
Suppose three people ate a meal in a restaurant. The cost of each of their meals is m. One person intends to tip 10%, the second
Zanzabum
Your answer would be D
6 0
3 years ago
Read 2 more answers
Please help ASAP !! :)
Mila [183]

Answer:

  1. temperature is decreasing as time passes
  2. x-axis
  3. hot drink temperature (°C)

Step-by-step explanation:

1. Each value of temperature is lower than the one previous, so we can say the temperature is decreasing. We also notice that the rate of decrease is getting smaller, possibly because the temperature is approaching a horizontal asymptote.

__

2. The horizontal axis, where temperature is plotted, is conventionally called the x-axis.

__

3. The label on the vertical axis is "temperature" and the graph title is "cooling a hot drink ...", so we presume the dependent variable is the temperature of a hot drink.

7 0
4 years ago
Xinxuweisddeueyehcjduxhx​
Tamiku [17]

Answer:

<h2 /><h2 /><h2>⠀⠀⠀⠀⠀⠀8 2</h2><h2>⠀⠀⠀⠀⠀+ ⠀ 6</h2><h2>⠀⠀⠀⠀_________</h2><h2>⠀⠀⠀⠀⠀⠀8 8</h2>

<h3><u>6</u><u> </u> is the answer.</h3>

5 0
3 years ago
Read 2 more answers
Describe the shape resulting from a vertical, angled, and , horizontal cross section of a rectangular prism.
Dennis_Churaev [7]
For example, lets say:
L = 10
H = 6
W = 4

Imagine the shape is facing slightly towards your left
A left vertical cross section (perpendicular to the base) of the cuboid would result in a 10 by 6 rectangle
A right vertical cross section (perpendicular to the base) of the cuboid would result in a 6 by 4 rectangle
A horizontal cross section (parallel to the base) of the cuboid would result in a 10 by 4 rectangle
An angled cross section (through the middle) would also give a rectangle but the dimensions would be different. If the cut went from one '4' edge to the one in the opposite corner, the length of that would be found using Pythagoras
a² + b² = c²
6² + 10² = c²
36 + 100 = 136
√136 ≈ 11.66cm
11.66 by 4 rectangle

The shows that the resulting shape will always be a rectangle for these cross sections.
<em>The only case in which it would not, would be if one of the faces of the cuboid was a square - in which case one of the cross sections would also be a square.</em>

6 0
4 years ago
Other questions:
  • Which of the following is NOT a characteristic of a plane? A. It cannot be seen. B. It is imaginary. C. Its width can be measure
    6·2 answers
  • You want to invest
    5·1 answer
  • How do you plot 2 2/3 on a number line?
    14·1 answer
  • Azul has 4 green picks and no orange picks.You add orange picks so that there are 2 oranges picks for every 1 green pick.How man
    11·1 answer
  • I need the answer to this
    10·1 answer
  • Merchant buys shipment of spices for $76.00 and sells for $100.00. If he profits an extra $2.00 for each sack sold, how many sac
    12·1 answer
  • Which of the following pairs show(s) triangles that are similar but not congruent?
    14·1 answer
  • If u answer this I'll make a random question with a 100 points on it so u can get it
    9·2 answers
  • Write .0043 as a percentage
    9·1 answer
  • What are the factors of the trinomial?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!