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3 years ago

How do I solves these problems

Mathematics

1 answer:

77julia77 [94]3 years ago

3 0

1) 2z= -6
divide both sides by 2
2z/2= -6/2
2 on the left cancels out
z= -3

2) y/-5= 20
multiply both sides by -5
(-5)(y/-5)= (-5)(20)
-5 on the left cancels out
y= -100

Hope this helps! :)

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if I have a 68% overall and I get a A+ on a final exam that is worth 20% of my grade what would my grade be? There is 86 questio

erik [133]

Answer:

i guess your new grade would be 88%. If you past 100%, you might pass for that grade. Even if you get a 90%, you'll still be able to pass.

Step-by-step explanation:

3 0

3 years ago

If you want to graph the relationship to compare the unit prices, what should the x- and y-axes represent?

Rashid [163]

Answer:

The x-axis should be the units and the y-axis should be the prices.

Step-by-step explanation:

IF you guys have time, this is my explanation:

In a graph, we always think of "rise over run" or "y over x." Another way to write this is "y PER x." For example, 90 percent is "90 per 100," which can also be written as, "90 OVER 100." So, do we have price per unit or unit per price?

The answer would be, "unit per price." This is because the question asks to compare the unit prices, not the price units. Think unit price = unit PER price. Price unit = price PER unit. So the question asks, "For every unit, what will the price be?"

Therefore, units is x and prices are y because we are trying to compare price per unit, which we now know is y PER x.

7 0

3 years ago

Read 2 more answers

HELP PLEASE IM BEGGING <br> Numbers: 4,31,35,45,52,56,66

luda_lava [24]

Answer:

i think this is the answer 289

Step-by-step explanation:

have a great day

5 0

3 years ago

Read 2 more answers

Can someone help me please ? Thanks!

notka56 [123]

Use pythagorean theorem for all of them
a. 3, 4, 5
3^2+4^2?5^2
9+16?25
25=25
right

b. 5, 6, 7
5^2+6^2=7^2
25+36=49
61>49
acute

c. 64+81=144
145>144
acute

hope this helps!

6 0

4 years ago

Read 2 more answers

The set M represents multiples of 4 from 6 to 38. M=8,12,16,20,24,28,32,36 The set N represents even numbers from 4 to 13. N=4,6

Tomtit [17]

Answer:

The correct option is B. 2

So there are two elements that is 8, 12 in the set M⋂N .

Step-by-step explanation:

Given:

M is a set of multiples of 4 from 6 to 38

i.e M = { 8, 12, 16, 20, 24, 28, 32,36 }

N is a set of even numbers from 4 to 13

i.e N = { 4, 6, 8, 10, 12 }

To Find:

M⋂N = ?

Solution:

Set:

A set is a well-defined collection of distinct objects, considered as an object in its own right.

Examples :

M is a set of multiples of 4 from 6 to 38

i.e M = { 8, 12, 16, 20, 24, 28, 32,36 }

N is a set of even numbers from 4 to 13

i.e N = { 4, 6, 8, 10, 12 }

M⋂N = set of those numbers which are present in M as well as in N

∴ M⋂N = { 8, 12 }

So there are two elements that is 8, 12 in the set M⋂N .

8 0

3 years ago