Find the length of bc Round answer to the nearest hundredth

Solve the proportion

Vinvika [58]

Answer:

1. (3/2)

2. (20)

3. (3)

4. (-9/5)

5. (-8/7)

6. (-2/3), (4)

Step-by-step explanation:

1. 2. 3. 4.

x 3 12 3 x 1 x + 3 3

/ = / / = / / = / / = /

4 8 x 5 9 x 2 5

8x = 12 60 = 3x x² = 9 5x + 15 = 6

÷8 ÷8 ÷3 ÷3 x = √9 -15 -15

5x = -9

x = (3/2) x = 20 x = 3 ÷5 ÷5

x = (-9/5)

5. 6.

4 - x 3 1 x - 3

/ = / / = /

12 7 2x + 1 9

28 - 7x = 36 9 = 2x^2 - 5x - 3

-28 -28 + 3 + 3

12 = 2x^2 - 5x

-7x = 8 -12 -12

÷-7 ÷-7

2x^2 - 5x - 12 = 0

x = (-8/7)

-b +-√b^2 - 4ac

/ = -(-5)√-5^2 - 4 (2)(-12)

2a /

2(2)

= 5-+√121 5 - 11 -6

/ = / = / = (-2/3)

-4 4 4

= 5 + 11 16

/ = / = (4)

4 4

I hope this helps!

3 0

1 year ago

2 u + 12 < 23 0,1 d + 8 > 0 3 - 4 r > 7 13 < 2 z + 3 6 ≥ 9 - 0, 15 i

BartSMP [9]

Answer:

Part 1) $u< 5.5$

Part 2) $d > -80$

Part 3) $r < -1$

Part 4) $z>5$

Part 5) $i\geq 20$

Step-by-step explanation:

The question is

Solve each inequality for the indicated variable

Part 1) we have

$2u+12$

subtract 12 both sides

$2u< 23-12\\2u$

Divide by 2 both sides

$u< 5.5$

The solution is the interval (-∞,5.5)

In a number line the solution is the shaded area at left of u=5.5 (open circle)

The number 5.5 is not included in the solution

Part 2) we have

$0.1d+8 >0$

subtract 8 both sides

$0.1d > -8$

Divide by 0.1 both sides

$d > -80$

The solution is the interval (-80,∞)

In a number line the solution is the shaded area at right of d=-80 (open circle)

The number -80 is not included in the solution

Part 3) we have

$3-4r> 7$

Subtract 3 both sides

$-4r>7-3\\-4r>4$

Divide by -4 both sides

Remember that, when you multiply or divide both sides of an inequality by a negative number, you must reverse the inequality symbol

$r < -1$

The solution is the interval (-∞,-1)

In a number line the solution is the shaded area at left of r=-1.1 (open circle)

The number -1.1 is not included in the solution

Part 4) we have

$13< 2z+3$

Subtract 3 both sides

$13-3$

Divide by 2 both sides

$5$

Rewrite

$z>5$

The solution is the interval (5,∞)

In a number line the solution is the shaded area at right of z=5 (open circle)

The number 5 is not included in the solution

Part 5) we have

$6\geq 9-0.15i$

Subtract 9 both sides

$6-9\geq -0.15i\\-3\geq -0.15i$

Divide by -0.15 both sides

Remember that, when you multiply or divide both sides of an inequality by a negative number, you must reverse the inequality symbol

$20\leq i$

Rewrite

$i\geq 20$

The solution is the interval [20,∞)

In a number line the solution is the shaded area at right of i=20 (closed circle)

The number 20 is included in the solution

6 0

3 years ago

What is the area, in square units, of the trapezoid?

Misha Larkins [42]

Answer:

99

Step-by-step explanation:

plzmark brainliest

6 0

2 years ago

I will give you the brainliest if you answer asap please

IRINA_888 [86]

Answer:

168

Step-by-step explanation:

You just need to triple the answer to get 168.

8 0

2 years ago

Table

viktelen [127]

4) The first and second terms for both ratios need to be in the same order.

Step-by-step explanation:

Given ratio is:

16:36

In order to find any ratio equivalent to given ratio, the ratio can be divided by a number or multiplied to a number.

The equivalent ratio that is given: 72:32

If we multiply the given ratio by 2: We get 32:72

So,

Looking at the options we can conclude that the right answer is

4) The first and second terms for both ratios need to be in the same order.

Keywords: Ratio, Fractions

Learn more about ratios at:

#LearnwithBrainly

3 0

2 years ago