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love history [14]
3 years ago
9

I don’t understand, help please ?!

Mathematics
2 answers:
GREYUIT [131]3 years ago
5 0
I think you multiply or add
Ede4ka [16]3 years ago
5 0
Find the area of the rectangle 15x4 =60
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5540 in scientific notation
never [62]

Answer:

Therefore, the decimal number 5540 written in scientific notation is 5.54 × 103 and it has 3 significant figures.

Step-by-step explanation:

PLS BRAINLEST PLS PLS PLS

6 0
3 years ago
Read 2 more answers
50 points! <br> Solve: <br> 5a + 6.9 = 3.6a +16.28
icang [17]
A = 6.7 :) hope this helps I double checked
6 0
3 years ago
Read 2 more answers
can someone help me understand this, please? For some reason my answer is correct but I need to understand how did I found the c
Morgarella [4.7K]

Answer with step-by-step explanation:

The way the question is worded, this actually shouldn't be correct. The correct answer should be 3:4.

Because the trapezoids are similar, we can find the ratio of their perimeters by actually just finding the ratio of their sides.

Why?

By definition, the corresponding sides of a polygon are in a constant proportion. The perimeter is simply the sum of all sides of the polygon. Since we're just adding the sides, the proportion will still be maintained.

Therefore, we'll just need to ratio of their corresponding sides. The only two corresponding sides that are marked are \overline{RS} and \overline{AB}.

The ratio of \overline{RS}:\overline{AB} is 18:24\implies \boxed{3:4}.

The reason why it ideally should be 3:4 and not 4:3 is because the question states RTSU\sim ABCD, which mentions RSTU first, so our answer should follow this respective order. I believe you were marked right anyways because the specific order is not specified, but generally, you want to give your answer respectively by default.

3 0
2 years ago
At the beginning of each year for 14 years, Sherry Kardell invested $400 that earns 10% annually. What is the future value of Sh
Naddik [55]
Hmm if I'm not mistaken, is just an "ordinary" annuity, thus 

\bf \qquad \qquad \textit{Future Value of an ordinary annuity}&#10;\\\\&#10;A=pymnt\left[ \cfrac{\left( 1+\frac{r}{n} \right)^{nt}-1}{\frac{r}{n}} \right]&#10;\\\\\\

\bf \begin{cases}&#10;A=&#10;\begin{array}{llll}&#10;\textit{original amount}\\&#10;\textit{already compounded}&#10;\end{array} &&#10;\begin{array}{llll}&#10;&#10;\end{array}\\&#10;pymnt=\textit{periodic payments}\to &400\\&#10;r=rate\to 10\%\to \frac{10}{100}\to &0.1\\&#10;n=&#10;\begin{array}{llll}&#10;\textit{times it compounds per year}\\&#10;\textit{annually, so once}&#10;\end{array}\to &1\\&#10;&#10;t=years\to &14&#10;\end{cases}&#10;\\\\\\&#10;A=400\left[ \cfrac{\left( 1+\frac{0.1}{1} \right)^{1\cdot 14}-1}{\frac{0.1}{1}} \right]&#10;
3 0
3 years ago
Read 2 more answers
Original price $18 and percent of discount is 65% what is the sale price
liq [111]

Answer:

$6.3

Step-by-step explanation:

Original price = $18

Percentage Discount = 65%

Discount = 18*65% = 18*0.65 = $11.7

Sale Price = Original price - Discount

= $18 - $11.7

= $6.3

7 0
2 years ago
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