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Ivenika [448]
3 years ago
13

I need help with the whole question asap

Mathematics
2 answers:
galben [10]3 years ago
8 0
We know that there are 24 hours in one day. We are going to use this for the whole question. For each question we are going to do 24 hours multiplied by the decimal form of the percentage for that particular activity (we find the decimal value by moving the decimal twice to the left)

School: 24*.25 = 6 hours
Eating: 24*.1 = 2.4 hours
Sleep: 24*.4 = 9.6 hours
Homework: 24*.1 = 2.4 hours
Free time: 24*.15 = 3.6 hours

Hope this helps!
Pavlova-9 [17]3 years ago
6 0
Ok , so you need to see that 100% must be 1 full day ( which is 24 hours )  
Now saying school is 25% of 24 hours , therefore bringing you to the answer of 6 hours .  
  
     .25
   x 24
_______
       6


 
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Decrease 40 by 12.5%
vredina [299]

Answer:

35

Step-by-step explanation:

Multiply 40 by 0.125 (12.5%) and you get 5

Subtract 5 from 40

35

6 0
3 years ago
If k = -3 what is the value of k + (2k - 10) ?<br><br> A. –19<br> B. –7 <br> C. 1<br> D. –14
gladu [14]

Answer:

A

Step-by-step explanation:

We have the expression k+(2k-10)

We want to find the value when k is -3. So, substitute -3 for k and evaluate:

\Rightarrow (-3)+(2(-3)-10)

Multiply:

=-3+(-6-10)

Subtract:

=-3+(-16)

Add:

=-19

Therefore, our answer is A.

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3 years ago
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3 0
4 years ago
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On a coordinate plane, a dashed straight line has a positive slope and goes through (negative 3, negative 7) and (0, 2). Everyth
Semenov [28]

Answer:

y < 3x + 2

Step-by-step explanation:

We will be solving this in slope-intercept form, which is a form that gives us the slope and the y-intercept of the graph explicitly:

y=mx+b, m is the slope and b is the y-intercept

We are given that everything to the left of the resulting line is shaded, so we know that the inequality sign will be < (less than). That already eliminates the second and fourth options. We also know the y-intercept, or the point where the graph crosses the y-axis and x is 0. because it is given to us (2, which comes from the point (0,2)). To figure out the slope, we can use the formula since we are given two points [(-3, -7) and (0, 2)] the line passes through. The formula, which is mapped out below, tells us that the slope is just the difference in rise (vertical movement) divided by the difference in run (horizontal movement).

m=\frac{-7-2}{-3-0} =\frac{-9}{-3} =3

Now we have all the information we need to find the inequality. The slope is 3, the y-intercept is 2, and the sign is <. The first inequality fits these criteria, meaning the correct linear inequality is y < 3x + 2

4 0
2 years ago
A family will travel 225 miles
Gennadij [26K]

Answer:

t ≤ 225r

Step-by-step explanation:

Distance = 225 miles

Time taken = t

Average speed = r miles per hour

Recall :

Speed = distance / time

Time, = distance / speed

t = 225 miles / r

All possible values of t :

t ≤ 225r

4 0
3 years ago
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