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Leokris [45]
3 years ago
7

Identify each statement that is both biconditional and true.

Mathematics
2 answers:
Kryger [21]3 years ago
5 0

Answer:

I think it's A and D

guajiro [1.7K]3 years ago
3 0
It’s gotta be A and D
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What does it mean when i see | | in math? here is an example |-5|?
VashaNatasha [74]

Answer:

Absolute vale bars- it means anything inside the bars are always positive so to your example the answer would be 5

Step-by-step explanation:

7 0
3 years ago
One side of a rectangle is 4 inches longer than the other side. The area of the rectangle is 21 square inches. Find the lengths
hammer [34]

Answer:

l = 7 in; w = 3 in

Step-by-step explanation:

The formula for the area of a rectangle is

A = lw

Data:

A = 21 in²

l = w + 4

Calculation:

                 21 = (w + 4) × w

                 21 = w² + 4w

w² + 4w - 21 = 0

(w + 7)(w - 3) = 0

w + 7 = 0     w - 3 = 0

      w = -7         w = 3

We reject the negative value, so w = 3 in.

21 = l × 3

l = 7

The rectangle is 7 in long and 3 in wide.

5 0
3 years ago
How do you do this question?
max2010maxim [7]

Answer:

∫₁⁵ 2t (t² + t³) dt

Step-by-step explanation:

The area is ∫ₓ₁ˣ² y dx.  To parameterize, replace x₁ and x₂ with t₁ and t₂.  Replace y = f(x) with y = f(t), and replace dx with (dx/dt) dt.

x = 5 + t², so dx = 2t dt.

∫₁⁵ (t² + t³) (2t dt)

∫₁⁵ 2t (t² + t³) dt

6 0
3 years ago
Please help ?!!! Pleaee
Taya2010 [7]
31 is the answer; this is because to get to the place-holder number “0” you have to add 19 to -19, then after this, you add 12, making the total 31.
6 0
3 years ago
The lengths of the sides of a triangle are given below. Classify the triangle as acute, obtuse, or right.
abruzzese [7]

Answer:

  • A. Acute Triangle

Step-by-step explanation:

<u>Lets verify with Pythagorean:</u>

  • 17² = 289
  • 13² + 14² = 169 + 196 = 365
  • 289 < 365

The angle opposite to a greater side is less than 90° and the sum of the squares are close.

It means all three angles<u> are less than 90°</u>.

With this the triangle is <u>acute</u>.

Correct choice is A.

6 0
3 years ago
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