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Andreyy89
3 years ago
7

If x-3 = 10, then x =

Mathematics
2 answers:
rjkz [21]3 years ago
7 0

X-3=10


Add 3 to both sides


×=10+3


X=13


To check


13-3=10


It checks

aalyn [17]3 years ago
6 0
Add 3 on both sides
x = 13
I hope this helps you!
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Zero property 2x^3+x^2-3x=0
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The answer is
X= -3/2 or x=1
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4 years ago
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Find all the missing dimensions when a=9, b=13, c=64°
DerKrebs [107]

Answer:

Part 1) c=12.14\ units

Part 2) m\angle A=41.78^o

Part 3) m\angle B=74.22^o

Step-by-step explanation:

step 1

Find the measure of side c

Applying the law of cosines

c^2=a^2+b^2-2(a)(b)cos(C)

we have

a=9\ units\\b=13\ units\\C=64^o

substitute

c^2=9^2+13^2-2(9)(13)cos(64^o)

c^2=81+169-234cos(64^o)

c^2=250-234cos(64^o)

c^2=147.4212

c=12.14\ units

step 2

Find the measure of angle A

Applying the law of sines

\frac{a}{sin(A)}=\frac{c}{sin(C)}

substitute the given values

\frac{9}{sin(A)}=\frac{12.14}{sin(64^o)}

solve for sin(A)

sin(A)=\frac{sin(64^o)}{12.14}(9)

sin(A)=0.6663

m\angle A=sin^{-1}(0.6663)=41.78^o

step 3

Find the measure of angle B

we know that

The sum of the interior angles in any triangle must be equal to 180 degrees

so

m\angle A+m\angle B+m\angle C=180^o

substitute the given values

41.78^o+m\angle B+64^o=180^o

m\angle B+105.78^o=180^o

m\angle B=180^o-105.78^o

m\angle B=74.22^o    

5 0
3 years ago
Solve the equation : x/2-12=(-48)
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Answer:

x=(-60)

Step-by-step explanation:

x/2-12=(-42)

add 12 to -42

x/2=(-30)

divide -30 by 1/2

x=(-60)

5 0
4 years ago
Marcie likes to collect stickers, but she also likes to give them away. Currently, Marcie has 87 stickers in her collection. If
pishuonlain [190]

Answer: 97 stickers

Step-by-step explanation:

Marie has 87 stickers in her collection.

Each week she collects 5 and gives away 3.

The total number of stickers she gains per week is therefore:

= 5 - 3

= 2 stickers per week

In 5 weeks therefore, she would have collected:

= 2 * 5

= 10 stickers

Add that to the original number:

= 87 + 10

= 97 stickers

3 0
3 years ago
Mean and median of 3,7,2,4,7,5,7,1,8,8.
just olya [345]

Answer;

mean=5.2

median=6

Step-by-step explanation:

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3 years ago
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