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3 years ago

9

Please help

1 answer:

Whitepunk [10]3 years ago

5 0

Answer:

7.5 units²

Step-by-step explanation:

½ × a × b × sinC

½ × 5 × 8 × sin(22)

7.492131868

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Can someone help me? It's urgent and thank you!

Irina-Kira [14]

Answer:

option A

Step-by-step explanation:

$\frac{x+ 3}{12x} \ \cdot \ \frac{4x}{x^2 +x - 6}\\\\= \frac{x+ 3}{12x} \ \cdot\ \frac{4x}{x^2 +3x - 2x - 6}\\\\= \frac{x+ 3}{12x} \cdot \frac{4x}{x(x + 3) -2(x+3)}\\\\= \frac{x+ 3}{12x} \cdot \frac{4x}{(x + 3)(x -2)}\\\\= \frac{1}{12x} \ \cdot \ \frac{4x}{(x - 2)} \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \\\\= \frac{1}{3} \ \cdot \ \frac{1}{(x - 2)}\\\\= \frac{1}{3(x - 2) }$

5 0

3 years ago

Abe is going to plant 54 oak trees and 27 pine trees. Abe would like to plant the trees in rows that all have the same number of

Virty [35]

Answer:

9

Step-by-step explanation:

The GCF between 54 and 27 is nine.

4 0

3 years ago

Read 2 more answers

Valuate the xpression 4(10-4) power of 2 devided by 4

liq [111]

Hence, the value of the expression is 36.

Solution:

Step 1: Given expression is $4(10-4)^{2} \div 4$ .

BODMAS means do Bracket, Of, Division, Multiplication, Addition, Subtraction

Step 2: Using BODMAS rule first simplify the expression which is in bracket.

⇒ $4(10-4)^{2} \div 4=4(6)^2\div4$

Step 3: Squaring of the number 6.

⇒ $4(6)^2\div4=4\times36\div4$

Step 4: Using BODMAS rule, divide 36 by 4.

⇒ $4\times36\div4=4\times9$

Step 5: Using BODMAS rule, multiply 4 with 9.

⇒ $4\times9=36$

Hence, the value of the expression is 36.

8 0

3 years ago

What is4-8a=4(5-3a)

kenny6666 [7]

Answer:

a=4

Step-by-step explanation:

<u>Question: 4-8a=4(5-3a)</u>

<u />

1) Distribute 4 to 5 and -3a:

4-8a=20-12a

2) Add 12a to both sides:

4+4a=20

3) Subtract 4 from both sides:

4a=16

4) Divide both sides by 4:

a=4

Footnotes:

- The <em>Distributive</em> property says a(b+c)=ab+ac

7 0

3 years ago

Read 2 more answers

Which point is on the line that passes through point Z and is perpendicular to line AB? (–4, 1) (1, –2 ) (2, 0) (4, 4)

AlladinOne [14]

For this case we have that if the line that passes through point z is perpendicular to line AB, it is fulfilled that:

$m * m_ {AB} = - 1$

We find the slope of AB:

$m_ {AB} = \frac {y2-y1} {x2-x1}$

We choose the points that go through AB:

(-2.4)

(0, -4)

$m_ {AB} = \frac {-4-4} {0 - (- 2)}\\m_ {AB} = \frac {-8} {2}\\m_ {AB} = - 4$

So:

$m * -4 = -1\\m = \frac {1} {4}$

On the other hand, the point z is (0,2).

Then the cut point with the "y" axis is 2.

The equation of the line is:

$y = \frac {1} {4} x + 2$

We test the points:

(-4,1)

$1 = \frac {1} {4} (- 4) +2\\1 = -1 + 2\\1 = 1$

Is fulfilled

(1, -2)

$-2 = \frac {1} {4} (1) +2\\-2 = \frac {1} {4} +2$

It is not true

(2,0)

$0 = \frac {1} {4} (2) +2$

It is not true

(4,4)

$4 = \frac {1} {4} (4) +2\\4 = 1 + 2$

It is not true

Answer:

Option A

5 0

3 years ago

Read 2 more answers