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3 years ago

A letter that represents an unknown number is a(n)

Mathematics

1 answer:

marishachu [46]3 years ago

5 0

A variable represents an unknown number

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The base of a rectangle is 13 centimeters longer than the height.If the perimiter is 58 centimeters find the base and the height

Yuri [45]

Answer:

Base: 8cm. Height: 21cm

Step-by-step explanation:

We know that the base of a rectangle is 13 cm. longer than the height and the perimeter is 58 cm. Here is how we would set up the problem:

2x+2(x+13)= 2x + 2x + 26 = 4x + 26 = 58 (now we use the distributive property:

4x + 26 = 58

-26 -26

4x = 32

So, the base is 8 cm.

Now it's time to find the height.

So, we know the base (in total) is 16 cm. Now we do 58-16=42. Now we divide 42 divided by 2 = 21 cm.

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3 years ago

Simplify if possible

Anarel [89]

The answer is the last choice 2 1/2

8 0

3 years ago

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Help me solve this pls

ddd [48]

Answer:

$\frac{x - 10}{8}$

Step-by-step explanation:

$\frac{3x}{8} - \frac{x + 5}{4}$

The common denominator of both fractions is 8. Therefore,, divide the denominator of each fraction, then multiply what you get by the numerator of each fraction.

Thus:

$\frac{1(3x) - 2(x + 5)}{8}$

$\frac{3x - 2x - 10}{8}$

$\frac{x - 10}{8}$

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3 years ago

15 points. Please help meeee

yaroslaw [1]

Answer:

Step-by-step explanation:

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3 years ago

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Multiply write in simplest form 1/2×2 and <br>3/8

S_A_V [24]

Answer:

The simplest form of 1/2 x 2 is 2 or 2/1 or 4/2.

The simplest form of 3/8 is 3/8.

Step-by-step explanation:

(look at picture)

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3 years ago