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V125BC [204]
3 years ago
15

Can someone check my math homework? Please I need it to be checked.

Mathematics
1 answer:
dmitriy555 [2]3 years ago
6 0
I have to say this is wrong because you subtracted 3 and 3 is the variable term. So what you need to do is to add 9 to both side to get 3x by it self. Then divide by 3 and then x=6
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I am helping my sister with home work and I don’t rennet how to do this. Here is the question-“ there are 24 dogs in the dog sho
marshall27 [118]
The answer is 8. it's basically just 24÷3
4 0
3 years ago
Please help because I don’t know this please
jeka57 [31]

Answer:

39⇒3

52⇒4

130⇒10

Step-by-step explanation:

hope this helps have a nice day!!!

8 0
2 years ago
Read 2 more answers
911 x 65 what is 911 x 65 not just the answer the work to
alexandr402 [8]

Answer:

Step-by-step explanation:

911

<u>x65</u>

5x1=5

5x10=50

5x900=4500

60x1=60

60x10=600

60x900=54000

5+50+4500+60+600+54000=59,215

6 0
3 years ago
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A is a 4x4 matrix and A^2 + 4A - 5I = 0. If det(A+2I)&gt;0, enter det(A+2I)
maw [93]
\mathbf A^2+4\mathbf A-5\mathbf I=0
\implies\mathbf A^2+4\mathbf A+4\mathbf I=(\mathbf A+2\mathbf I)^2=9\mathbf I
\implies\det\bigg((\mathbf A+2\mathbf I)^2\bigg)=\det(9\mathbf I)
\implies\det(\mathbf A+2\mathbf I)^2=9^4\det\mathbf I
\implies\det(\mathbf A+2\mathbf I)=\pm\sqrt{9^4}
\implies\det(\mathbf A+2\mathbf I)=9^2=81

where we take the positive root because we're told that the determinant is positive.
5 0
3 years ago
What is the solution to 6x=30
Tasya [4]

Answer:

\boxed{x=5}

Step-by-step explanation:

Division property of equality- is dividing both sides of an equation by the same non-zero number it does not change the equation.

First you had to divide by six from both sides of an equation form.

\frac{6x}{6}= \frac{30}{6}

30/6=5

30/5=6

5*6=30

6*5=30

x=5

5=x

Final answer: \boxed{x=5}

Hope this helps!

And thank you for posting your question at here on brainly, and have a great day.

-Charlie

8 0
3 years ago
Read 2 more answers
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