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tensa zangetsu [6.8K]
2 years ago
9

Can someone help me with this please?

Mathematics
1 answer:
GarryVolchara [31]2 years ago
7 0

Answer:

16.49

Step-by-step explanation:

21^2 - 13^2 = 272

square root 272 = 16.49

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How many inches are in 2\1 2 feet?
mamaluj [8]

Answer:

30 inches

Step-by-step explanation:

1 ft= 12 inches

12×2= 24

1/2 of 12 is 6

24+6=30

30 inches

3 0
3 years ago
Read 2 more answers
9. Solve for x,<br>9x - 25<br>5x + 7<br>N​
kati45 [8]

Answer:

x = 8

Step-by-step explanation:

Simplifying

9x + -25 = 5x + 7

Reorder the terms:

-25 + 9x = 5x + 7

Reorder the terms:

-25 + 9x = 7 + 5x

Solving

-25 + 9x = 7 + 5x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-5x' to each side of the equation.

-25 + 9x + -5x = 7 + 5x + -5x

Combine like terms: 9x + -5x = 4x

-25 + 4x = 7 + 5x + -5x

Combine like terms: 5x + -5x = 0

-25 + 4x = 7 + 0

-25 + 4x = 7

Add '25' to each side of the equation.

-25 + 25 + 4x = 7 + 25

Combine like terms: -25 + 25 = 0

0 + 4x = 7 + 25

4x = 7 + 25

Combine like terms: 7 + 25 = 32

4x = 32

Divide each side by '4'.

x = 8

Simplifying

x = 8

7 0
3 years ago
a 3 pound tub of butter at n dollars per pound costs $3.85. select the equation that most accurately depicts the word problem
Oksi-84 [34.3K]
<span>the equation that most accurately depicts the word problem  is
3xn=$3.85
proof
n=</span>
<span>n=$3.85/3=$1.28
the price is $1.28 per pound, 3 pound costs 3x$1.28=$3.85
</span>
4 0
3 years ago
Read 2 more answers
In the triangle, angle RST is 90°. RS= 4cm and ST=3 cm. What is the length of RT? R 4 cm S T 3 cm​
s344n2d4d5 [400]

Step-by-step explanation:

RT^2=RS^2+ST^2

RT^2=16+9=25

RT=√25=5

The answer is 5

5 0
2 years ago
Solve for n <br><br> 11/6=n+7/9<br><br><br> (Plz no trolling; will mark brainiest)
xxTIMURxx [149]

Answer:

n=\frac{19}{18}

Step-by-step explanation:

Ir order to find the value of n in the given linear equation: \frac{11}{6} = n + \frac{7}{9} you have to perform the properties of equalities to obtain an equivalent equation.

You have to perform these properties in each side of the equation.

Applying the subtraction property (which is the subtraction of the same number to each side of the equation):

Adding \frac{7}{9} to each side:

\frac{11}{6} - \frac{7}{9} = n + \frac{7}{9} - \frac{7}{9}

This way you can obtain the value of n

\frac{11}{6} - \frac{7}{9} = n

Solving the subtraction of the fractions and simplifying:

\frac{(11)(9)-(7)(6)}{(6)(9)} = n\\\frac{57}{54} = n\\n=\frac{19}{18}

7 0
3 years ago
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