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lions [1.4K]
3 years ago
8

Multiply: (5t - 4)(4t + 5)

Mathematics
1 answer:
ANEK [815]3 years ago
5 0

Answer:

A. 20t² + 9t - 20

Step-by-step explanation:

(5t × 4t) + (5t × 5) - (4 × 4t) - (4 × 5)

= 20t² + (25t - 16t) - 20

= <u>20t² + 9t - 20</u> (A)

<em>Hope </em><em>this </em><em>is </em><em>h</em><em>e</em><em>l</em><em>p</em><em>ful </em><em>and </em><em>useful </em><em>:</em><em>)</em>

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Plz help no guessing
vladimir1956 [14]

Those are alternate interior so congruent angles,

2x + 15 = 3x

15 = x

Choice A

7 0
3 years ago
If y varies directly with x and y=20.4 when x=6, find the value of y when x=-5?
a_sh-v [17]

Answer:

y=-17

Step-by-step explanation:

y=mx

20.4=m×6

20.4÷6=m

3.4=m

y=3.4×-5

y=-17

4 0
2 years ago
Read 2 more answers
Write the following as a complex number in the form a + bi square root -245
Pepsi [2]

Answer:

Step-by-step explanation:

√(-245)=√(49×5×i^2)=7√5 i=0+7√5 i

5 0
3 years ago
Read 2 more answers
Which transformation produces another triangle that has the same area as the one shown?
vfiekz [6]

Answer:

A reflection in the line y = -2, then a translation 2 units right.

Step-by-step explanation:

Transformation is the movement of a point from its initial location to a new location. Types of transformation are rotation, reflection, translation and dilation.

Rigid transformation are transformation that preserves the shape and size of the object. Rotation, reflection, translation are rigid transformation whereas dilation is not a rigid transformation.

Any transformation regarding dilation changes the side length of the object and hence the area.

From the question, only one option is right. The rest options are not right because they involve dilation. The correct option is:

A reflection in the line y = -2, then a translation 2 units right.

7 0
3 years ago
Use the properties of exponents to enter an equivalent expression with a single exponent.
Gelneren [198K]

({10}^{2} ) {}^{4}  =  {10}^{2 \times 4}  =  {10}^{8}

I hope this can help you ^_^

5 0
3 years ago
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