Ask question

Ask question

All categories

-Dominant- [34]

3 years ago

15

1. Solve proportion 12/15 = 18/b

1 answer:

omeli [17]3 years ago

3 0

We solve the as follows:

<span>1. Solve proportion 12/15 = 18/b
</span>( 12/15 = 18/b ) b<span>
( 12b/15 = 18 ) 15/12
b = 18(15/12)
b = 45/2

2. Solve equations

A. -x + 4 = x +6
</span>-x + 4 - x = x +6 - x
<span>-2x + 4 - 4 = 6 - 4
-2x = 2
x = -1

B. 5n + 7 =7(n+1) -2n
5n + 7 = 7n + 7 - 2n
5n -7n + 2n = 7 - 7
0 = 0

C. -4(p+2) + 8 = 2(p-1) - 7p + 15
-4p - 8 + 8 = 2p - 2 - 7p + 15
-4p + 7p - 2p = -2 + 15 + 8 - 8
p =13

3. Solve a/b x - c = 0 for x
</span>a/b x - c = 0
( a/b x = c ) b/a
x = bc / a

You might be interested in

Need help with special right triangles

svetoff [14.1K]

Answer:

explain what you need help about then i will try to help you

Step-by-step explanation:

6 0

2 years ago

1. Which of the following equations has a solution of 6?

matrenka [14]

Answer:

i dkn

Step-by-step explanation:

so hi 8X equals 56x equals blank check does 8 equal 56 this is correct

4 0

3 years ago

Question 12(Multiple Choice Worth 5 points)

zubka84 [21]

where is the figure? I can't see it

8 0

1 year ago

Help ASAP!!!!!!!!!!!!!!!

Stells [14]

Answer: 4.0 * 10^0 kg = 4.0 kg essentially

Step-by-step explanation:

No need to convert these to numbers...

Weight of 1 bee: 1 * 10^-4 = (0.0001 kg)

Number of bees: 4 * 10^4 = (40000 bees)

(1 * 10^-4) * (4 * 10^4) =

(1 * 4) * (10^-4 * 10^4) =

(10^0 because when multiply exponential numbers, you add the exponents)

4 * 10^0 =

4 * 1 = 4 kg

7 0

1 year ago

Find the value of x. Please help! Thanks.

emmasim [6.3K]

Answer:

$\huge\boxed{x=\sqrt{30}}$

Step-by-step explanation:

ΔABC and ΔBDC are similar (AAA).

Therefore the corresponding sides are in proportion:

$\dfrac{AC}{BC}=\dfrac{BC}{CD}$

substitute

$AC=7+3=10\\{BC}=x\\CD=3$

$\dfrac{10}{x}=\dfrac{x}{3}$ <em>cross multiply</em>

<em /> $(10)(3)=(x)(x)\\\\30=x^2\\\\x^2=30\to x=\sqrt{30}$ <em />

8 0

2 years ago