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Mama L [17]
3 years ago
14

A rectangle with dimensions of 3 units by 5 units is enlarged by a scale factor of 1.4 By what percent does its area increase?

Mathematics
2 answers:
Delicious77 [7]3 years ago
8 0

Answer:

128.(6)%

i think this is the ans

vodomira [7]3 years ago
3 0
A_1=3*5=15\\
3.5*1.4=4.9\\
5*1.4=7\\
A_2=4.9*7=34.3\\
\frac{34.3}{15}*100\%=228.(6)\%\\
228.(6)\%-100\%=128.(6)\%
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(5a^2+6a+2)-(7a^2-7a-5)
krok68 [10]

For this case we must simplify the following expression:(5a^ 2 + 6a + 2) - (7a^ 2-7a-5) =

We eliminate the parentheses taking into account that:

- * + = -\\- * - = +

So:

5a ^ 2 + 6a + 2-7a ^ 2 + 7a + 5 =

We add similar terms taking into account that:

Equal signs are added and the same sign is placed.

Different signs are subtracted and the major sign is placed.

5a ^ 2-7a^2 + 6a + 7a +2 +5 =\\-2a ^ 2 + 13a + 7

Answer:

-2a ^ 2 + 13a + 7

8 0
3 years ago
This month the Middle School Media newspaper has 25 pages. Twenty-five schools order the paper for each of their students. Each
musickatia [10]

Answer:

25^4

Step-by-step explanation:

Here, we want to find the expression that shows the total number of pages in all of the news papers

Number of pages per book = 25

Number of schools is 25

Number of classrooms is 25

Number of students per classroom is 25

Now; the number of students in each school

is 25 * 25

Number of students in all of the school will be;

25 * 25 * 25

So the number of pages in all of the schools will be;

25 * 25 * 25 * 25 = 25^4

7 0
2 years ago
Select all the solutions to the inequality: -2x>10
Jlenok [28]
The answer:

-10, -8, -5

Explanation:

If you replace x with every number and solve the inequality, the one ones that correctly complete the inequality are -10, -8, and -5.
4 0
3 years ago
Jane read 3/8 of a book for 6 days. How many books did she read?
otez555 [7]

Hey there!

The answer to your question is 2 \frac{1}{4} books.

To solve this, we must multiply \frac{3}{8} by 6

\frac{3}{8} *\frac{6}{1}=\frac{18}{8} =2\frac{1}{4}

Hope it helps! Have a great day!

7 0
3 years ago
What is 186/248 as a mixed number??
rjkz [21]
You can simply it to 3/4
4 0
3 years ago
Read 2 more answers
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