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4 years ago

11

[15 / (7 - 2 * 2) + 2]+ 6 / 3=

1 answer:

AVprozaik [17]4 years ago

5 0

The answer is 9

first of all you solve the small brackets, then the bigger brackets, after that you solve the multiplication and division, then finally you solve the addition and subtraction

[ 15 ÷ (7-4) + 2 ] + 6 ÷ 3
[ 15 ÷ (3) + 2 ] + 6 ÷ 3
[ 5 + 2 ] + 6 ÷ 3
[7] + 6 ÷ 3
7 + 2
9

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An aircraft has a maximum of 30 first class seats and 220 economy seats.

Sidana [21]

Answer:

$x\leq 30$

$y\leq 220$

$240x+120y$

Step-by-step explanation:

Let

x ----> the number of first class seats

y ----> the number of economy class seats

we know that

An aircraft has a maximum of 30 first class seats

so

$x\leq 30$

An aircraft has a maximum of 220 economy seats

$y\leq 220$

A flight will be cancelled if the money taken for the seats is less than $28,800.

so

$240x+120y$

therefore

Three inequalities that represent the situation are

$x\leq 30$

$y\leq 220$

$240x+120y$

8 0

3 years ago

X^3 = 125/27 simplify. a. 25/9 b. +- 25/9 c. 5/3 d+- 5/3

s2008m [1.1K]

Answer:

C

Step-by-step explanation:

4 0

4 years ago

Add. (5y - 1) + (-2y + 4) A) 3y - 5 B) 3y + 3 C) 7y + 3 D) 7y - 3

Ivan

(5y - 1) + (-2y + 4) = 5y - 1 - 2y + 4
= 5y - 2y - 1 + 4
= 3y + 3 [OPTION B]

8 0

3 years ago

In a certain English class, \small \frac{1}{4} of the number of girls is equal to \small \frac{1}{6} of the total number of stud

strojnjashka [21]

Answer:

The ratio of the number of boys to the number of girls in the class 1 to 2 or 1/2.

Step-by-step explanation:

Consider the provided information.

Let g is number of girls, and b is number of boys.

The total number of students is b + g.

It is given that, In a certain English class, 1/4 of the number of girls is equal to 1/6 of the total number of students.

$\frac{g}{4} = \frac{b + g}{6}$

Solve the above equation.

$6g=4b+4g$

$2g=4b$

$\frac{b}{g}=\frac{2}{4}$

$\frac{b}{g}=\frac{1}{2}$

Hence, the ratio of the number of boys to the number of girls in the class 1 to 2 or 1/2.

8 0

4 years ago

A car covers 635km by going for 4 hours at a certain speed,then for 3 hours at 4km/h faster,and then for 2 hours at 5 km/h slowe

mezya [45]

First speed is 158.75 km/hr

Step-by-step explanation:

Step 1: Given the car travels 635 km in 4 hours. Find speed of the car.

Use formula for Speed = Distance/Time

⇒ Speed = 635/4 = 158.75 km/hr

4 0

3 years ago