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3 years ago

How would i do this problem and show my work x+9= -12

Mathematics

2 answers:

boyakko [2]3 years ago

5 0

To solve this problem just do the following,
x+9=-12
-9 -9
x=-21
Check
-21+9=-12 = True

Hope this helps!=)

Nadya [2.5K]3 years ago

5 0

X + 9 = -12 equals x = -21.

First, subtract 9 from both sides. / Your problem should look like: x = -12 - 9.
Second, simplify -12 - 9 to get -21. / Your problem should look like: x = -21, which is your answer.

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Find the missing side length of the right triangle 5in 15in

kumpel [21]

Answer:

15, because the sides are congruent except for the bottom ones

Step-by-step explanation:

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2 years ago

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Jackie cut a 2 yard spool into 5 equal lengths of ribbon?

lidiya [134]

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3 years ago

Two triangles can be formed with the given information. Use the Law of Sines to solve the triangles. A = 56°, a = 12, b = 14

Eva8 [605]

We know that
case 1)
Applying the law of sines
a/Sin A=b/Sin B
A=56°
a=12
b=14
so
a*Sin B=b*Sin A----> Sin B=b*Sin A/a---> Sin B=14*Sin 56°/12
Sin B=0.9672
B=arc sin (0.9672)------> B=75.29°-----> B=75.3°

find angle C
A+B+C=180°-----> C=180-(A+B)----> C=180-(56+75.3)----> C=48.7°

find c
a/Sin A=c/Sin C----> c=a*Sin C/Sin A----> c=12*Sin 48.7°/Sin 56°)
c=10.87-----> c=10.9

the answer Part 1)
the dimensions of the triangle N 1
are
a=12 A=56°
b=14 B=75.3°
c=10.9 C=48.7°

case 2)
A=56°
a=12
b=14
B=180-75.3----> B=104.7°

find angle C
A+B+C=180°-----> C=180-(A+B)----> C=180-(56+104.7)----> C=19.3°

find c
a/Sin A=c/Sin C----> c=a*Sin C/Sin A----> c=12*Sin 19.3°/Sin 56°)
c=4.78-----> c=4.8

the answer Part 2)
the dimensions of the triangle N 2
are
a=12 A=56°
b=14 B=104.7°
c=4.8 C=19.3°

3 0

3 years ago

Describe the error in the work shown. 62 + 3 + 5 x 2 36 + 8 x 2 36 + 16 52

makkiz [27]

Answer:

There is an error in the application of the DMAS rule, The answer as per the DMAS rule is 75.

Step-by-step explanation:

There is an error in the implication of the DMAS rule of Mathematics.

DMAS rule determines the arrangement of mathematical functions to be performed in an expression where multiple functions are present.

The DMAS Rules describes the following arrangement of the mathematical functions.

1st Division

2nd Multiplication

3rd Addition

4th Subtraction

Applying the above rule the solution is as follow

62 + 3 + 5 x 2

First, we need to solve the Multiplication because there is no division

62 + 3 + 10

Now perform the addition function

65 + 10

6 0

2 years ago

Marco has $400. Each week, Marco adds $5 to his bank account.

lesantik [10]

Answer:

I'm pretty sure it's 400w+5=s

Step-by-step explanation:

400w because thats how much he earns each week +5 because that's how much he added =s which equals the total cost in his savings

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3 years ago