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never [62]
3 years ago
12

A pyramid is made above a cuboid with measure 90cm×50cm×225cm. If the height of the pyramid including cuboid is 240cm, find the

total volume.​
Mathematics
1 answer:
zhenek [66]3 years ago
3 0

Answer: whatever do I care

Step-by-step explanation: I don’t care

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Does the point ( 2, 1 ) satisfy the equation y = 2x?
densk [106]

Answer:

No.

Step-by-step explanation:

Y=2x goes up twice and to the right once, it passes through the origin, therefore it won't touch or go pass by point (2,1)

6 0
3 years ago
Please help me because I don't understand how to do it.:)
lana66690 [7]

Answer:

C  Yes, 75+ 2.5*60 = 225

Step-by-step explanation:

The charges for the electrician

1st hour = 75

Additional hours 60

We have 3 1/2 hours of labor

The first hour is 75 dollars

3 1/2 - 1 = 2 1/2

There will be 2 1/2 hours at the 60 dollar rate

75 + 60 * 2.5 =

75 + 150

225

8 0
3 years ago
Please help, on question 8 and 9, note that, a= 2, b= 3, and c=4.<br><br> *Algebra question*
LuckyWell [14K]

Answer:

did you look hard if yes you would see this is easy also do it like a game

Step-by-step explanation:

4 0
2 years ago
Randomly selecting someone who is over 45 years or over
I am Lyosha [343]
"45 years or over" includes all of the age groups "45-64", "65-74", and "75 or over". These age groups are disjoint (no individual can belong to more than one group), so the probability of picking someone that's at least of 45 years of age is the sum of the probabilities that a person belongs to any one of these groups. That would be

24.8\%+9.6\%+6.6\%=41\%
8 0
3 years ago
Determine the equation for a line that passes through the point M(-7, 3) and
adell [148]

Answer:

y = 2x/7 + 5

Step-by-step explanation:

the first line is defined by

7x - 2y + 3 = 0

in the most common way to write this we need an equation like y = ...

so, we isolate the y-expression in the equation :

2y = 7x + 3

y = (7x + 3) / 2 = 7x/2 + 3/2

the factor of x is the slope of the line, which is expressed by the y/x ratio indicating how many units y will change, when x changes e.g. 1 unit.

7/2 means that y will change by 7 units for every change in x by 2 units.

the slope of a perpendicular line is inverse to the slope of the original line, which means x and y are simply trading places (original x / original y).

so, the perpendicular slope of 7/2 is 2/7 (when x changes by 7 units, then y changes by 2 units).

that means the equation for the perpendicular line is something like

y = 2x/7 + c

the c we determine by using the coordinates of the given point (x and y values).

3 = 2×(-7)/7 + c = 2×(-1) + c = -2 + c

c = 5

so, the complete equation of the perpendicular line is

y = 2x/7 + 5

8 0
3 years ago
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