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sergey [27]
3 years ago
9

X^2 - 25 = 25 solve for x

Mathematics
1 answer:
Nezavi [6.7K]3 years ago
3 0

Answer:

\tt x=\pm5\sqrt{2}

Step-by-step explanation:

\tt x^2 - 25 = 25

\tt x^2-25+25=25+25 (Add 25 to both sides)

\tt x^2=50 ( Take square of both sides)

\tt x=x=\sqrt{50},\:x=-\sqrt{50}

\tt x=\pm5\sqrt{2}

~

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What are the measures of angles M and N?<br> m m m m &lt; M = 119° and m
NNADVOKAT [17]

Answer:

m<M = 113 deg

m<N = 61 deg

Step-by-step explanation:

In an inscribed quadrilateral, opposite angles are supplementary.

m<M + m<K = 180

m<N + m<L = 180

m<M + 67 = 180

m<M = 113

m<N + 119 = 180

m<N = 61

7 0
3 years ago
Can someone please do this ill mark brainliest
Svet_ta [14]

Answer:

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8 0
4 years ago
The mean age of Mr Jasmi,Miss Haslinda and their three children is 38 years. The mean age of their three children is 18 years. C
DedPeter [7]
Answer: 68

Explanation:

Let x be the age of Mr Jasmi
y be the age of Miss Haslinda
a + b + c be the age of the 3 children

We can write:
(x + y + a + b + c)/5 = 38

But:
(a + b + c)/3 = 18
a + b + c = 18(3)
a + b + c = 54

Substitute this value to our first equation

(x + y + 54)/5 = 38
x + y + 54 = 38(5)
x + y + 54 = 190
x + y = 190 - 54
x + y = 136

Thus:
Mean age of (mr jasmi and miss Linda) = (x+y)/2

But x + y = 136

=> mean age = 136/2 = 68
4 0
3 years ago
I need a lot of help, I’m really confused on what we are learning currently.
Virty [35]

7m+2=7n−5

Swap sides so that all variable terms are on the left hand side.

7n−5=7m+2

Add 5 to both sides.

7n=7m+2+5

Add 2 and 5 to get 7.

7n=7m+7

Divide both sides by 7.

7

7n

=

7

7m+7

Dividing by 7 undoes the multiplication by 7.

n=

7

7m+7

Divide 7+7m by 7.

n=m+1

3 0
3 years ago
To convert 2.5 hours into minutes, which ratio could you multiply by? Remember that 1 hour = 60 minutes.
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3 years ago
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