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AfilCa [17]
3 years ago
14

A triangle can be formed with side lengths 4, 5, 8, A : true B : false

Mathematics
2 answers:
svetoff [14.1K]3 years ago
8 0
The answer would be true because 4+5 is > 8
masha68 [24]3 years ago
8 0
Answer is true...
triangle can be formed
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Please help me fastttt!!!!
Alika [10]

Answer:

-4

Step-by-step explanation:

2^2 =4

PMDAS

-36 / 4 +5

-9+5

-4

7 0
3 years ago
100 POINTS!!! ALGEBRA 1 PLEASE HELP!!! BRAINLIEST IF CORRECT
Ainat [17]

Answer:

<h2>1. (-6, 0) and (-1, 0)</h2><h2>2. not exist</h2><h2>3. (5, 0)</h2>

Step-by-step explanation:

The zeros of a quadratic function are x-intercepts of parabola.

Graph #1:

x = -6 and x = -1

Graph #2:

not exist

Graph #3:

x = 5

5 0
3 years ago
Read 2 more answers
A rectangle has a length of 12 yards less than 3 times its width. If the area of the rectangle is 135 square yards, find the len
Aleonysh [2.5K]

Answer:

The length is 15 yards

Step-by-step explanation:

Given

Represent the width with W and length with L: So

Area = 135yd^2

L=3W - 12

Required

Determine the length of the rectangle:

Area is calculated as thus:

Area = L * W

Substitute 3W - 12 for L and 135 for Area

135= (3W - 12) * W

135= 3W^2 - 12W

Reorder:

3W^2 - 12W - 135= 0

Divide through by 3

W^2 - 4W - 45 = 0

Expand:

W^2  - 9W + 5W - 45 = 0

W(W  - 9) + 5(W - 9) = 0

(W + 5)(W-9) = 0

W + 5 = 0 or W - 9 = 0

W = -5 or W = 9

But width can't be negative

So:

W = 9

Recall that: L=3W - 12

L = 3 * 9 - 12

L = 15

<em>Hence, the length 15 yards</em>

4 0
3 years ago
If f(x) = 5x, what is f–1(x)?
Verdich [7]
We are given f(x) = 5x
and we are to find inverse of f(x).

Step 1:
Replace f(x) by y.
So,

y = 5x

Step 2:
Isolate x
So,

x = y/5

Step 3:
Replace x by f'(y)
So,

f'(y) = y/5

Step 4:
Replace all occurrences of y by x.
So,

f'(x) = x/5

Therefore, the inverse of f(x) = 5x is f'(x) = x/5
7 0
4 years ago
What is the answer to X^2-61=20
Reika [66]
X^2 -61 =20
X^2= 81x =9 x=-9
7 0
3 years ago
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