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3 years ago

Wich of the followings ratios are equivalent to 8:6 select all that apply 4:3 6:8 16 :12 10:8 7:5

2 answers:

8 0

16:12 and 4:3 since you multiply two in both sides to get 16:12 so they're equivalent and then you divide 2 on both sides to get 4:3 so that's equivalent

nekit [7.7K]3 years ago

5 0

The correct answers are 4:3 and 16:12. if you divide 8 and 6, you get 1.3 (repeating). you get that same answer for the other two ratios. if you divide the other ones you get different decimals than don't equal 1.3 (repeating) so you can tell they're not correct.

*if i was a little confusing tell me I can explain it better if you'd like*

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PLEASE HELP kelly invested $1875 in a savings account which earns 3.35% interest compounded quarterly what will the account be w

attashe74 [19]

The account will be worth $2368.20 in 7 years.

The compound interest formula is

$A=p(1+\frac{r}{n})^{n\times t}$

where p is the principal invested, r is the interest rate as a decimal number, n is the number of times the interest is compounded yearly, and t is the amount of time.

3.35% = 3.35/100 = 0.0335.

Using our information, we have:
$A=1875(1+\frac{0.0335}{4})^{4*7}$

which comes out to $2368.20.

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3 years ago

Use the quadratic formula to solve the quadratic equation x2 − 8x − 4 = 0.

vesna_86 [32]

Hope this helps you.

5 0

3 years ago

Help me please, Find a, b, and c.

Mama L [17]

Answer:

a = $6*\sqrt{3}$

b = 12

c = $6\sqrt{2}$

Step-by-step explanation:

Since the triangles are right triangles with 60 and 45 degree angles, their side lengths follow special triangles.

A 45-45-90 right triangle has side lengths $1-1-\sqrt{2}$ .

A 30-60-90 right triangle has side lengths $1 - \sqrt{3} -2$ .

Starting with the top triangle which has a 60 degree angle, its side length 6 corresponds to a side length of 1 in the special triangle. It is 6 times bigger so its remaining sides will be 6 times bigger too.

Side a corresponds to side length $\sqrt{3}$ . Therefore, $a = 6*\sqrt{3}$ .

Side b corresponds to side length 2, b = 2*6 = 12.

The bottom triangle has a 45 degree angle, its side length b= 12 corresponds to $\sqrt{2}$ . This means $\sqrt{2}$ was multiplied by $12 = \sqrt{2} * \sqrt{72}$ . This means that side c is $\sqrt{72}=6\sqrt{2}$ .

3 0

3 years ago

Read 2 more answers

Answer number one and number two please

kodGreya [7K]

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Step-by-step explanation:

5 0

3 years ago

Rt - 2n = y solve for t

Nesterboy [21]

Answer:

$t=\frac{y+2n}{r}$

General Formulas and Concepts:

Pre-Alg

Equality Properties

Step-by-step explanation:

Step 1: Define equation

rt - 2n = y

Step 2: Solve for t

Add 2n to both sides: rt = y + 2n
Divide both sides by r: t = (y + 2n)/r

8 0

4 years ago