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3 years ago

-10y + 18 = -3(5y -7) +5y

Mathematics

2 answers:

murzikaleks [220]3 years ago

7 0

There aren't any solutions. I recommend using MathPapa algebraic calculator for problems like this. Here's the link: https://www.mathpapa.com/algebra-calculator.html

BARSIC [14]3 years ago

6 0

I hope this helps you

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The percentage of students in school that attended the talent show for the years 2008 to 2013 are shown. This year, the school h

Elodia [21]

Answer:

352 students

Step-by-step explanation:

Given

See attachment for table

$n = 400$

Required

Attendance of students in this year's show

First, we calculate the mean of the table

$Mean= \frac{\sum x}{n}$

So, we have:

$Mean= \frac{85\% + 91\% + 92\% + 87\% +84\% + 89\%}{6}$

$Mean= \frac{528\%}{6}$

$Mean= 88\%}$

Multiply the mean by the total students

$Expected = Mean * n$

$Expected = 88\% * 400$

$Expected = 352$

7 0

2 years ago

15 years from now Ravi's age will be 4 times his present age what is Ravi's present age

irga5000 [103]

Answer:

Ravi’s present age will be 5.

Step-by-step explanation:

From the given, Let Ravi’s present age is taken as "a" years.

After 15 years, his age = (a+15) years.

By the given, it is identified that the age of Ravi after 15 years is equal to the 4 times of his present age.

Given,

$a+15+4a\\4a-a+15\\3a=15\\a=15/3\\a=5$

Then, it has been found that the present age of Ravi is 5 when his age after 15 years will be 4 times of his present age.

6 0

3 years ago

Read 2 more answers

Please help! I do not understand. Letter b) cannot be the answer

ivanzaharov [21]

If he has 1/4 of a cup, that means he must fill it up 4 times to equal 1 cup (1/4*4). if he wants 2 cups he must fill it up 8 times.

3 0

3 years ago

A theatre has 50 seats on the front row. There are 4 additional seats in each following row.

alexandr402 [8]

$\boxed { \boxed { T_n = a_1 + d(n - 1)}}$

$\text {Given that }a_1 = 50 \text { and } d = 4$

$T_n = 50 + 4(n - 1)$

$T_n = 50 + 4n - 4$

$T_n = 46 + 4n$

$\boxed { \boxed {T_n = 46 + 4n }}$

When n = 20,
$T_{20} = 46 + 4(20) = 126$

$\boxed { \boxed {\text{Answer: The 20th term is 126}}}$

4 0

3 years ago

RSM QUESTION NEED HELP!!!!!! A pharmacist has a 13 % alcohol solution and another 18 % alcohol solution. How much of each must h

Luden [163]

Answer:

40 grams of 13% alcohol solution and 10 grams of 18% alcohol solution.

Step-by-step explanation:

13%(x) + 18%(50-x) = 14%*50g Multiply them all

0.13x + (9-0.18x) = 7

0.13x-0.18x + 9 = 7 Simplify the equation and subtract 0.13x from 0.18x

9-0.05x = 7 Add 0.05x to each side

9 = 7+0.05x Subtract 7 from both sides

0.05x = 2 Multiply each side by 100

5x = 200 Divide both sides by 5

x = 40

50 - 40 = 10

40 grams and 10 grams

Your welcome

4 0

3 years ago

Read 2 more answers