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2 years ago

6. Multiply: (x – 4)(x + 5)

Mathematics

2 answers:

Elena-2011 [213]2 years ago

6 0

Answer:

x^2+x-20

Step-by-step explanation:

(x-4)(x+5)

=x^2-4x+5x-20

=x^2+x-20

Hope This Helped

Anvisha [2.4K]2 years ago

3 0

Answer:

$x^2+x-20$

Step-by-step explanation:

1) Use the 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.

$x^2+x-20$

What is the FOIL method

It stands for:

First, Outside, Inside, Last

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The product of 2x^2+6x-8 and x+3 in standard form

anzhelika [568]

Answer:

2x³ + 12x² + 10x - 24

Step-by-step explanation:

(2x² + 6x - 8)(x + 3) Distribute

2x³ + 6x² + 6x² + 18x - 8x - 24 Combine like terms

2x³ + 12x² + 10x - 24 This expression is in standard form

If this answer is correct, please make me Brainliest!

6 0

4 years ago

how would a enter a payment that was accepted with a 4 month, 8% note in a payment of a $4800.00 account

Anon25 [30]

Answer:

Enter a payment of 5192.52.

Step-by-step explanation:

Consider the provided information.

The payment is $4800 with a 4 month, 8% note.

The amount can be calculated as:

$Amount=p(1+\frac{r}{m})^{mt}$

Where p is money invested, r is annual interest rate, t is number of years and m is number of period.

Now substitute p = 4800 r = 0.08 and m = 4 in the above formula.

$Amount=4800(1+\frac{0.08}{4})^4$

$Amount=4800(1+0.02)^4$

$Amount=4800(1.02)^4$

$Amount=4800(1.08243216)$

$Amount=5195.52\ approximately$

Hence, enter a payment of 5192.52.

6 0

3 years ago

I need help with this math

Zinaida [17]

Answer:

Step-by-step explanation:

∠1 + ∠2 = 180 {Supplementary angles}

6x + 15 + 3x + 3 = 180

6x + 3x + 15 + 3 = 180

Combine like terms

9x + 18 = 180

Subtract 18 from both sides

9x = 180 - 18

9x = 162

x = 162/9

x = 18

∠2 = 3x +3

= 3*18 + 3

= 54 + 3

∠2 = 57°

8 0

3 years ago

Read 2 more answers

Two triangles have side lengths 3,4,5 and 6,____10, respectively. The triangles are similar to each other.

Sergeu [11.5K]

Answer:

Step-by-step explanation:

3,4,5 and 6,_,10 are similar. what do you notice between the two? 6 is twice of 3. 10 is twice of 5. so then 4 would be half of 8.

hope i helped ;)

8 0

3 years ago

Please help me solve for x =

Sladkaya [172]

Answer:

x = 13

Step-by-step explanation:

Given that Δ NML and Δ PST are similar right triangles, we can set up the following proportional statement to establish their relationship:

$\frac{ML}{NM} = \frac{ST}{PS}$

$\frac{8}{10} = \frac{x - 1}{x + 2}$

Cross multiply:

8(x + 2) = 10 (x - 1)

8x + 16 = 10x - 10

Subtract 8x from both sides:

8x - 8x + 16 = 10x - 8x - 10

16 = 2x - 10

Add 10 to both sides:

16 + 10 = 2x - 10 + 10

26 = 2x

Divide both sides by 2:

$\frac{26}{2} = \frac{2x}{2}$

13 = x

Verify whether x = 13 is the correct value:

$\frac{ML}{NM} = \frac{ST}{PS}$

$\frac{8}{10} = \frac{x - 1}{x + 2}$

$\frac{8/2}{10/2} = \frac{4}{5}$

$\frac{x -1}{x+2} = \frac{13 - 1}{13 + 2} = \frac{12}{15} = \frac{12 / 3}{15 /3} = \frac{4}{5}$

This shows the proportional relationship between $\frac{ML}{NM} = \frac{ST}{PS}$ , and that ΔNML and ΔPST are indeed similar right triangles.

Therefore, the correct answer is x = 13.

4 0

3 years ago

6. Multiply: (x – 4)(x + 5)​

6. Multiply: (x – 4)(x + 5)