3x5²? Please I’m doing a test rn!

Mathematics

2 answers:

Monica [59]2 years ago

8 0

Answer:

Step-by-step explanation:

3x5x5=75

Bas_tet [7]2 years ago

5 0

Answer:

Step-by-step explanation:

5 times 5 is 25

3 times 25 is 75

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¿Cuál es el ángulo suplementario de 9º?

FinnZ [79.3K]

Answer:

171 degrees

Step-by-step explanation:

x + 9 = 180

x = 171

5 0

3 years ago

I thought of a number, added 3 2/7 to it, then I multiplied the result by 1 1/2 , and got

horsena [70]

Answer:

$\frac{25}{21}$

Step-by-step explanation:

First let's convert the mixed numbers into improper fractions.

$3\frac{2}{7}=\frac{23}{7}$

$1\frac{1}{2}=\frac{3}{2}$

$6\frac{5}{7}=\frac{47}{7}$

Let the number be n, so we can write an equation from the word problem as:

$(n+\frac{23}{7})*\frac{3}{2}=\frac{47}{7}$

Now, we do algebra and solve for n:

$(n+\frac{23}{7})*\frac{3}{2}=\frac{47}{7}\\\frac{3}{2}n+\frac{69}{14}=\frac{47}{7}\\\frac{3}{2}n=\frac{47}{7}-\frac{69}{14}\\\frac{3}{2}n=\frac{25}{14}\\n=\frac{\frac{25}{14}}{\frac{3}{2}}\\n=\frac{25}{14}*\frac{2}{3}\\n=\frac{50}{42}\\n=\frac{25}{21}$