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DaniilM [7]
4 years ago
7

Need help for #2 nd #8, really urgent!!

Mathematics
2 answers:
BigorU [14]4 years ago
7 0
That is the right answer
xxMikexx [17]4 years ago
4 0
#2 Answer: x=4
if 5^2 = 25 than 2^2=x
It means that x=4

#8 Answer: 3
let the space for number be 0 than
420*6 = 2520
next stage is to find the remainder:
2538-2520=18
than 18/6 = 3.

The missing number is 3
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Which values of x satisfy this equation?
grandymaker [24]
There are no values of X that equation true .
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4 years ago
sophia is 6 years older than her brother eric. the sum of their ages is 28. write and solve an equation to find sophia and Eric'
zimovet [89]

s = 6 + e

s + e = 28

We can use this system of equations to find the exact values of s and e.

We have a current value of s, so we can find the exact value of e now.

e + e + 6 = 28

<em><u>Combine like terms.</u></em>

2e + 6 = 28

<em><u>Subtract both sides by 6.</u></em>

2e = 22

<em><u>Divide both sides by 2.</u></em>

e = 11

Now we have an exact value of e, and can solve for the value of s.

s = 6 + 11

s = 17

Sophia is 17 years old, and Eric is 11 years old.


6 0
3 years ago
help me brainlist if you right Mona is inviting 10 friends to a party. Each friend wants 5 cookies and each box has 10 cookies.
seropon [69]

Answer:

its 5 boxes

Step-by-step explanation:

5 0
3 years ago
Let t = cosA + sinA<br> find values of t if <br> 2 - sin2A = 2(cosA + sinA)
Zinaida [17]

2 - \sin(2A) = 2(\cos A + \sin A)\\\\2-2\sin A\cos A=2\cos A+2\sin A\\\\2\sin A\cos A+2\cos A+2\sin A-2=0\\\\1+2\sin A\cos A+2\cos A+2\sin A-3=0\\\\\sin^2 A+\cos^2 A+2\sin A\cos A+2\cos A+2\sin A-3=0\\\\(\sin A+\cos A)^2+2\cos A+2\sin A-3=0\\\\(\sin A+\cos A)^2+2(\cos A+\sin A)-3=0\\\\\\t^2+2t-3=0\\\\t^2+2t+1-4=0\\\\(t+1)^2=4\\\\t+1=2\qquad\vee \qquad t+1=-2\\\\\\\boxed{t=1\qquad\vee\qquad t=-3}

When A\in\mathbb{R}

t=\cos A+\sin A\in[-\sqrt{2};\sqrt{2}]\approx[-1.4142;1.4142]

and there is only one answer t = 1.

For A\in\mathbb{C} both values are correct.

4 0
4 years ago
Find the area of the parallelogram that has a base of 4 m and a height of 5.5
konstantin123 [22]
The formula for the area of a parallelogram is
A=b*h      where b=base and h=height
plug in the data we know
A=4*5.5
A=22m²

Answer=B
7 0
3 years ago
Read 2 more answers
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