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NeX [460]
2 years ago
15

Multiply using FOIL or Table method (x + 4) (x + 5)

Mathematics
1 answer:
mylen [45]2 years ago
5 0

Answer:

{x}^{2}  + 9x + 20

Step-by-step explanation:

1) Use FOIL method: (a + b) (c + d) = ac + ad + bc + bd.

{x}^{2}  + 5x + 4x + 20

2) Collect like terms.

{x}^{2}  + (5x + 4x) + 20

3) Simplify.

{x}^{2}  + 9x + 20

<em><u>Therefor</u></em><em><u>,</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>answer</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><u>x</u><u>²</u><u> </u><u>+</u><u> </u><u>9x</u><u> </u><u>+</u><u> </u><u>20</u>.

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I really need help with this question. Can I get a explanation too?
aniked [119]

Answer:

C

Step-by-step explanation:

Find the surface area:

Bottom base: 57 × 27 = 1,539

Top base: 21 × 27 = 567

Rectangular face: 23 × 27 = 621

Rectangular face: 23 × 27 = 621

Trapezoidal face: (21 + 57) ÷ 2 × 15 = 585

Trapezoidal face: (21 + 57) ÷ 2 × 15 = 585

1,539 + 567 + 621 + 621 + 585 + 585 = 4,518

The surface area is 4,518 square inches

3 0
3 years ago
Can someone answer this plssss
Tpy6a [65]

Answer:

AB : Y= 4  CB: Y= -1

Step-by-step explanation:

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3 0
3 years ago
What is the simplified value of the expression below? 8.5 + (12 + 4) times 2 minus 7
Zolol [24]

Answer:

33.5  

-by-step explanation:

8.5 + (12 + 4) × 2 - 7

Use PEMDAS ( I think this is right hope it helps!)

8 0
3 years ago
Given f(x) = 2^x and g(x)=x+1, (fog)(x)=​
mixas84 [53]

Answer:

(f ○ g)(x) = 2^{x+1}

Step-by-step explanation:

Substitute x = g(x) into f(x) , that is

(f ○ g)(x)

= f(g(x))

= f(x + 1)

= 2^{x+1}

3 0
3 years ago
Read 2 more answers
What is the value of x?<br> 6-2/3(x+5)=4x
gogolik [260]

It was 14

3

x + 8

3

= 0

Factorization:

−2

3

(7x − 4) = 0

Solutions:

x = 8

14

≈ 0.571429

7 0
2 years ago
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