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3 years ago

9d + 4 = 2d + 53 Can someone tell me what d stands for?

Mathematics

1 answer:

lara31 [8.8K]3 years ago

7 0

Answer:

d=7

Step-by-step explanation:

To find d youll have to find it. 9d + 4 = 2d + 53 minus 2d on both sides> 7d+4=53 now minus 4 on both sides> 7d=49 divide 49/7 > d=7

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Step-by-step explanation:

So your solution would be:

$(\frac{3}{5})^{2} + 4 \times 3 - 2$

$=(\frac{3}{5})^{2} + 4 \times 3 - 2$

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Just try to remember PEMDAS.

Parenthesis, Exponent, Multiplication/Division, Addition/Subtraction.

This is the order we follow when going about expressions with many operations.

Let's start with the parenthesis part. Notice that there is an exponent beside the parenthesis enclosing the fraction. Here we use the quotient to a power rule. We distribute the exponent to the numerator and the denominator.

$=(\frac{3}{5})^{2} + 4 \times 3 - 2\\$

$=\dfrac{3^{2}}{5^{2}} + 4 \times 3 - 2$

$=\dfrac{9}{25} + 4 \times 3 - 2$

Now that we got the parenthesis and exponent out of the way, let's move on to the next. Multiplication/Division. Whichever comes first, you do it first.

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