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IgorC [24]
3 years ago
13

Which sentence could be used to describe the equation 105 = 78 + y

Mathematics
2 answers:
Whitepunk [10]3 years ago
4 0

Answer:

I think answer A

Step-by-step explanation:

Im very sorry if thats wrong

jekas [21]3 years ago
3 0

Answer:

y = 22

Step-by-step explanation:

One hundred five is equal to seventy-eight plus <em>y</em>.

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Given that y = 18 + 3x²<br> i) express x in terms of y
fgiga [73]

Answer:

\sqrt{-6 + \frac{y}{3}} = x

Step-by-step explanation:

y = 18 + 3x²

- 18 - 18

__________

\frac{-18 + y}{3} = \frac{3x^2}{3} \\ \\ -6 + \frac{y}{3} = x^2 \\ \\ \sqrt{-6 + \frac{y}{3}} = x

I am joyous to assist you anytime.

6 0
3 years ago
Jake thinks that a rhombus is not always a parallelogram.Is jake correct?
OverLord2011 [107]

Answer:

No, a rhombus is a quadrilateral, with four equal-length sides and opposite sides parallel to each other. All rhombuses are parallelograms, but not all parallelograms are rhombuses. The opposite interior angles of rhombuses are always congruent. A parallelogram is just a four sided closed shape where opposite sides are parallel.

I hope this helps!

8 0
3 years ago
Five times a certain number, minus 5, is equal to 7 more than three times the number. What is the number
JulijaS [17]

Answer:

6

Step-by-step explanation:

let’s start with putting the unknown to x, in this case it is the number.

5x-5=7+3x, so now we just solve this equation.

5x-3x=7+5

2x=12

x=6

4 0
3 years ago
HELP me this Solve please
Arlecino [84]

Answer:

Cannot solve fir x because traingles are not similar

Step-by-step explanation:

11+8+12=15+10+x

31=25+x

X=31-25

X=6

4 0
3 years ago
Answer with the explanation step by step
andrey2020 [161]

Answer:

The answer is A. \frac{3(x-21)}{(x+7)(x-7)}.

Step-by-step explanation:

To find the difference of this problem, start by simplifying the denominator, which will look like \frac{3}{x+7}-\frac{42}{(x+7)(x-7)}. Next, multiply \frac{3}{x+7} by \frac{x-7}{x-7}  to create a fraction with a common denominator in order to subtract from \frac{42}{(x+7)(x-7)}. The problem will now look like \frac{3}{x+7}*\frac{x-7}{x-7}-\frac{42}{(x+7)(x-7)}.  

Then, simplify the terms in the problem by first multiplying \frac{3}{x+7} and \frac{x-7}{x-7}, which will look like \frac{3(x-7)}{(x+7)(x-7)}-\frac{42}{(x+7)(x-7)}. The next step is to combine the numerators over the common denominator, which will look like \frac{3(x-7)-42}{(x+7)(x-7)}.

Next, simplify the numerator, and to simplify the numerator start by factoring 3 out of 3(x-7)-42, which will look like \frac{3(x-7-14)}{(x+7)(x-7)}. Then, subtract 14 from -7, which will look like \frac{3(x-21)}{(x+7)(x-7)}. The final answer will be \frac{3(x-21)}{(x+7)(x-7)}.    

4 0
3 years ago
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