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serg [7]
3 years ago
6

If ∠A and ∠B are complementary, find the value of x given that ∠A=3x-2 and ∠B=x+12

Mathematics
1 answer:
xxMikexx [17]3 years ago
6 0

Answer:

x=20 degrees

Step-by-step explanation:

complementary means the angles equal 90 degrees

so ∠A+∠B=90 degrees

∠A=3x-2 and ∠B=x+12

so subsitute

(3x-2)+(x+12)=90

then solve for x

4x+10=90

4x=80

x=20 degrees is your answer

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All the boxes in a certain warehouse were arranged in stacks of 12 boxes each, with no boxes left over. After 60 additional boxe
AveGali [126]

Answer:

(1) There were fewer than 110 boxes in the warehouse before the 60 additional boxes arrived. (2) There were fewer than 120 boxes in the warehouse after the 60 additional boxes arrived.

Step-by-step explanation:

Given that all the boxes in a certain warehouse were arranged in stacks of 12 boxes each, with no boxes left over.

This implies that boxes are in multiples of 12

i.e. 12, or 24, or 36 or....

Let us say this as 12m for m an integer

Now additional boxes arrived =60

Total number of boxes now = 12m+60

This when arranged in stacks of 14,nothing left out

Or this is multiple of 14

12m+60 = 14n for some positive integer n.

By trial and error we find that if 60 is to be divided by 14, 24 should be added and 24 is a multiple of 12.

So we say originally 24 boxes were there now 84 boxes there.

Hence both options are right.

(1) There were fewer than 110 boxes in the warehouse before the 60 additional boxes arrived. (2) There were fewer than 120 boxes in the warehouse after the 60 additional boxes arrived.

3 0
3 years ago
Use place-value patterns to complete the table. 100 is ten times as much as 1/10 of?
Eva8 [605]
100 is ten times as much as 1/10 of a hundred

ur multiplying n then dividing by ten so they cancel each other out 

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3 0
4 years ago
Evaluate the expression when a = 3,6 = 2 and C=-1.<br> (a + b)(6-0)
ivann1987 [24]
3+2 times (6) equals 48
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3 years ago
a 3 dimensional figure has a square base and 4 lateral faces that meet at a point. Explain the difference between the cross sect
Kruka [31]

Answer:

a slice is made perpendicular to the base through the vertex: triangle

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Step-by-step explanation:

a slice is made perpendicular to the base through the vertex: triangle

slice is made perpendicular to the base and not through the vertex: trapezoid

8 0
3 years ago
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leva [86]

Answer:

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Step-by-step explanation:

we know that

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so

512,800(0.03)=\$15,384

3 0
4 years ago
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