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Elina [12.6K]
3 years ago
11

Please to this step by step with answer

Mathematics
1 answer:
qwelly [4]3 years ago
4 0
First you would have to multiply 12 times 5 (60) then multiply 7 times 18 (126) you subtract both [ 126 - 60] = (66) that would be your final answer. They both need to have worked 66 minutes to have the same number of boxes.
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If f(x)=square root of 1/2x -10+3 which inequality can be used to find the domain of f(x)?
zlopas [31]
Hello :
f(x) = <span>√(0.5x-10) +3

</span>inequality can be used to find the domain of f(x) is :  0.5x-10 <span>≥ 0  
</span>0.5x ≥10
x ≥10/0.5
x ≥ 20

the domain of f(x) is :  D = <span>[</span><span>20 ; + ∞[ </span>
7 0
3 years ago
Read 2 more answers
10x – 2 – 6x = 3x – 2 + x
mina [271]

Answer:

C

Step-by-step explanation:

4x-2=4x-2

when u simplify the equations you get 4x-2=4x-2 therefore they are the same line which results in infinitely many solutions.

(pls mark brainliest)

3 0
2 years ago
Read 2 more answers
8x=5. ————
dezoksy [38]
1) 7(x-2)=x+16. 1) Given
2) 7x-14=x+6 2) Distributive Property of Equality
3) 7x-14+14=x+16+14. 3) Addition P.O.E
4) 7x=x+30. 4) Simplify
5) 7x-x=x+30-x. 5) Subtraction P.O.E
6) 6x=30. 6) subtraction P.O.E
7) 6x/6=30/6. 7) Division P.O.E
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5 0
3 years ago
Given: 1 and 2 are supplements, and 3 and 2 are supplements.
Ronch [10]

The <em><u>correct answers</u></em> are:

Supplementary; ∠2 and ∠3; substitution; 2.

Explanation:

Supplementary angles are angles whose measures sum to 180°.  Thus this is the first answer.  

Since we are told that ∠2 and ∠3 are supplementary, their measures sum to 180° and they are the second answer.

We know that m∠1 + m∠2 = 180° and m∠2 + m∠3 = 180°.  We can substitute "m∠2 + m∠3" for 180° in the first equation; this is the substitution property.

To isolate m∠1 on the right, we will subtract m∠2 from each side, and get that m∠1 = m∠3 and the angles are congruent.


5 0
3 years ago
Read 2 more answers
BRAINLIEST can someone please help!!!!!
Zielflug [23.3K]

I don't know about the first one but for the second one:

{2}^{3x + 2}  -  {2}^{3x}  = 48 \\ \Leftrightarrow {2}^{3x}  {2}^{2}  -  {2}^{3x}  = 48 \\ \Leftrightarrow  {2}^{3x} ( 4  - 1) = 48 \\ \Leftrightarrow 3 \times  {2}^{3x}  = 48 \\ \Leftrightarrow  {2}^{3x}  = 16 \\ \Leftrightarrow  {2}^{3x}  =  {2}^{4}  \\ \Leftrightarrow 3x = 4\Leftrightarrow x =  \frac{4}{3}

4 0
3 years ago
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