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3 years ago

What is an equilateral triangle

Mathematics

2 answers:

almond37 [142]3 years ago

7 0

Answer:

When all sides are equal

Step-by-step explanation:

Blababa [14]3 years ago

6 0

An equilateral triangle is a triangle where all three sides are equal lengths, it's usually also equiangular, meaning all three internal angles are equal (at 60 degrees.)

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Which ordered pair is the best estimate of the solution of the system 3x+y=4 x-3y=4?

vovangra [49]

$3x+y=4\ \ \ \ \ \ ..............equation(1)\\x-3y=4\ \ \ \ \ \ ..............equation(2)\\\\ Using~equation~(2), \\\\
x-3y=4\\x=4+3y\\\\Now,\ using\ the\ value\ of\ x\ in\ equation\ (1),\ we\ get,\\\\(4+3y)-3y=4\\\\4=4$

Since all the variables cancel out and the coefficient equal to eachother, this system of equation has <u>infinitely many solutions!</u>

6 0

3 years ago

Write the explicit formula for the geometric sequence.

My name is Ann [436]

Answer:

Step-by-step explanation:

the n th term ( explicit formula ) of a geometric sequence is

• $a_{n}$ = $a_{1}$ $(r)^{n-1}$

where r is the common ratio and $a_{1}$ the first term

here r = $\frac{8}{16}$ = $\frac{16}{32}$ = $\frac{1}{2}$ and $a_{1}$ = 64, hence

$a_{n}$ = 64 $(0.5)^{n-1}$ → D

8 0

3 years ago

The average of four numbers is 98. If three of the numbers are 86,87,and 91 what is the fourth number?

timurjin [86]

To find the average, you have to add all the numbers up and then divide by the amount of numbers you added together.

Equation: (86+87+91+x)/4=98
Solve for x:
86+87+91+x=98*4
264+x=392
x=392-264
x=128

The fourth number is 128

7 0

3 years ago

Find the sum of 3.8 + (-2.9)

MakcuM [25]

Answer:

3.8 - 2.9= .9

ANSWER : .9

6 0

2 years ago

Read 2 more answers

A theater can hold 120 giants or 144 elves. If 90 giants are already inside, how many elves can also be admitted?

navik [9.2K]

Answer:

Step-by-step explanation:

make proportion giants to elves

120/144 = 90/x cross multiply

120x =144*90

120x =12960 divide by 120

x = 108

so if there are 90 giants in the theater there are 108 elves also

considering that total 144 elves can be in the theater subtract 144 and 108 so 36 more elves can be admitted

3 0

3 years ago

Read 2 more answers