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4 years ago

Number 8 and 9 are confusing and I’d like an explanation on how to do them please

Mathematics

1 answer:

Dahasolnce [82]4 years ago

3 0

For number 9 just take the two functions and multiply or add them I can’t tell what sign that is

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The number of ball hoppers f(t) needed to hold tennis balls for a tournament can be found using function f(t) = t/75. If there a

Alina [70]

Answer:

Step-by-step explanation:

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3 years ago

What is 4 times 1/5 can I have the answer pleas thx

Alja [10]

4 x 1/5 so (1x4)/5 so the answer is 4/5 or .8

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3 years ago

Students who attend Washington Middle School are either in seventh or eighth grade. At the end of the first semester 25% of the

Irina18 [472]

Answer:

There are 1240 students who attended Washington Middle School.

Step-by-step explanation:

Given:

Students who attend Washington Middle School are either in seventh or eighth grade.

At the end of the first semester 25% of the students at Washington Middle School were on the honor roll.

Seventh graders represented 60% of the students on the honor roll.

If 124 students on the honor roll were in eighth grade.

Now, to find the students attend Washington Middle School.

Let the total number of students be $x.$

So, the students at Washington Middle School were on the honor roll:

25% of $x$

$=\frac{25}{100} \times x$

$=\frac{25x}{100}$

$=\frac{x}{4}$

As, given seventh graders represented 60% of the students.

So, the students on the honor roll represented as seventh graders:

$60\%\ of\ \frac{x}{4}$

$=\frac{60}{100} \times \frac{x}{4}$

$=0.6\times \frac{x}{4}$

$=\frac{0.6x}{4}$

As, 124 students on the honor roll were in eighth graders.

Thus,

According to question:

$\frac{x}{4} -\frac{0.6x}{4} =124$

$\frac{x-0.6x}{4} =124$

$\frac{0.4x}{4} =124$

Multiplying both sides by 4 we get:

$0.4x=496$

Dividing both sides by 0.4 we get:

$x=1240.$

Therefore, there are 1240 students who attended Washington Middle School.

6 0

4 years ago

A roll of wallpaper cost £7.85 richard buy 25 rolls of wallpaper estimate

joja [24]

Answer:

Step-by-step explanation:

if we're estimating ,we're going to round up to 8 since you can multiply that easier. 25 times 8 is 200 so estimation will be around 200

7 0

3 years ago

A local amusement park charges $21.50 per daily adult ticket and $14.75 per daily child's ticket. A group of 12 people paid $204

ivanzaharov [21]

Answer:

Step-by-step explanation:

Even though you didn't provide options from which to choose, you don't need them to figure out the system. We need an equation that involves the NUMBER of people and then we need an equation that involves the MONEY earned. Two different things here.

As for the number of people, we know that the number of adult tickets + the number of children = 12 people, so

x + y = 12.

That's the first equation. Now for the money:

21.50x + 14.75y = 204.00

That's your system.

8 0

3 years ago

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