3 years ago

I need help...cause i’m confused

Mathematics

1 answer:

Arisa [49]3 years ago

6 0

the answer is d thats what im choosing because i recall doing a similar problem to this

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When a tree 5 m high cast a shadow 7 m long how long is a shadow cast by a person 2 m tall write a proportion and solve

olga2289 [7]

Answer: 5/7 = 2/x x=4 m

Step-by-step explanation:

3 0

3 years ago

Find 20% of 120. Show work please.

icang [17]

Answer:

Step-by-step explanation:

When you are finding a percent of something, you need to move the decimal over to the left twice in the percentage. Like this:

20% = .20

Then, just multiply that by the number you are trying to find the percent of.

.20 x 120 = 24

7 0

3 years ago

Read 2 more answers

What is the 9th term of the following geometric sequence? 7/9,-7/3,7,-21,63 ??????

dmitriy555 [2]

Given:

The geometric sequence is:

$\dfrac{7}{9},\dfrac{-7}{3},7,-21,63,...$

To find:

The 9th term of the given geometric sequence.

Solution:

We have,

$\dfrac{7}{9},\dfrac{-7}{3},7,-21,63,...$

Here, the first term is:

$a=\dfrac{7}{9}$

The common ratio is:

$r=\dfrac{a_2}{a_1}$

$r=\dfrac{\dfrac{-7}{3}}{\dfrac{7}{9}}$

$r=\dfrac{-7}{3}\times \dfrac{9}{7}$

$r=-3$

The nth term of a geometric sequence is:

$a_n=ar^{n-1}$

Where, a is the first term and r is the common ratio.

Substitute $a=\dfrac{7}{9},r=-3,n=9$ to find the 9th term.

$a_9=\dfrac{7}{9}(-3)^{9-1}$

$a_9=\dfrac{7}{9}(-3)^{8}$

$a_9=\dfrac{7}{9}(6561)$

$a_9=5103$

Therefore, the 9th term of the given geometric sequence is 5103.

5 0

3 years ago

Anyone know this question??

kvv77 [185]

Answer:

Step-by-step explanation:

300*(1.04)^5

364.998581

5 0

3 years ago

Niome is starting a business knits and stitches. She needs help cutting someone's blanket sheet. They ask for a medium amount. S

Murrr4er [49]

I'm a little confused by this. 1/2 is too big, but 1 1/2 is too small?

4 0

3 years ago