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Rama09 [41]
2 years ago
10

I’ll mark the Brainliest :)

Mathematics
1 answer:
Minchanka [31]2 years ago
6 0

Answer:

Step-by-step explanation:

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Can someone plz help me with this plzz
vesna_86 [32]

Answer:

hi how are you wanna be friend

Step-by-step explanation:

6 0
2 years ago
Simplify the expression by combining like terms if possible. If not possible select already simplified. 4a^2+2a+4a^2-5
vichka [17]
So the expression is: 4 a^{2} + 2a + 4 a^{2} - 5

You can combine like terms, which are terms that contain the same variables raised to the same power. That means you can combine the two 4 a^{2}. 4 a^{2} + 4 a^{2} = 8 a^{2} The other terms can't be combined.

Your final answer should be 8 a^{2} +2a-5.
8 0
3 years ago
Eight times a number plus five another number is -13. The sum of the two numbers is 1. What are the numbers?
Pani-rosa [81]
Eight *(a number) plus 5*(another number) is -13.

translates to:

8(x) + 5(y) = -13

The sum of (the number) and (the other number) is 1.

translates to:

(x) + (y) = 1


We have a system of two equations involving two unknowns: x and y.

\rm 8x+5y=-13\\
~~x+~~y=~~~~1

We can easily solve the system using Substitution or Elimination. Let's use Elimination this time.

We'll multiply the second equation by -8 so that the x's match up.

\rm ~~~8x+5y=-13\\ -8x-8y=-8

When we add the equations together, the x's will fall out of the equation, summing to zero. The 5y and -8y will sum to -3y and the right hand side will sum to -21.

\rm -3y=-21

Divide by -3,

\rm y=7

Plug back into one of your original equations to find the value of x,

\rm x+y=1\\
x+7=1

Subtract 7,

\rm x=-6
8 0
3 years ago
When you start from a given set of rules and conditions and determine what must be true you are using _ reasoning
asambeis [7]

Answer:

Deductive

Step-by-step explanation:

4 0
2 years ago
Jim is 5 years older than Cindy. 4 years ago, the sum of their ages was 21. Find each of their ages now.
Dmitry_Shevchenko [17]
Jim is 16 because take away 21-5=16.Now Cindy 21-4=17.Cindy is 17.Jim is 16.
4 0
3 years ago
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