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3 years ago

What is the answer to 3/4d-1/2=3/8+1/2d

Mathematics

1 answer:

ElenaW [278]3 years ago

5 0

Answer:

d=7/2

Step-by-step explanation:

3/4d-1/2=3/8+1/2d

multiply all by 8, to make them into whole numbers (makes it easier)

6d-4=3+4d

move terms

6-d-4d=2d

3+4=7

7=2d

d=7/2

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Can anyone help me solve this?

xxMikexx [17]

Answer:

a- 16/100

b- 1/6

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Step-by-step explanation:

8 0

3 years ago

Solve x2 + 1/2x +1/16=4/9

kolezko [41]

<u>Answer:</u>

x = 0.417 or x = -0.917

<u>Step-by-step explanation:</u>

We are given the following expression and we are to solve it for the variable x:

$x ^2 + \frac { 1 } { 2 } x + \frac { 1 } { 1 6 } = \frac { 4 } { 9 }$

We will find the least common multiple of 2. 6 and 9:

$x^2 \times 144 +\frac{1}{2}x \times 144 +\frac{1}{16} \times 144 = \frac{4}{9} \times 144$

Simplifying it to get:

$144x^2+72x+9=64$

$144x^2+72x+9-64=0$

$144x^2+72x-55=0$

Using the quadratic formula to solve for x:

$x=\frac{-b \pm\sqrt{b^2-4ac} }{2a}$

$x=\frac{-72 \pm\sqrt{72^2-4(144)(-55)} }{2a}$

$x=\frac{5}{12}$ or $0.417$

$x=-\frac{11}{12}$ or $-0.917$

3 0

3 years ago

Katalin drove 300 miles on her vacation. She drove an average of 1.9 times faster on the second 150 miles of her trip than she d

viktelen [127]

300=x+1.9x
I got this by dividing the problem into two parts x[the speed of the first half] plus 1.9x [the speed of the second half increased by 1.9] both of those together should give you 300.
I went further and solved this...If you placed 103.5 into this problem for x you should get 300.15!

8 0

3 years ago

What is 67 multiplyed by 55 ?

Brilliant_brown [7]

Hi there! :)

Step-by-step explanation:

Multiply- it's going to be product. It can also multiply by the numbers, fractions, decimals, factors, and multiples.

First, multiply by the numbers.

$67*55=3685$

$335+3350=3685$

Answer: $\boxed{=3685}$

Hope this helps!

Thanks!

-Charlie

Have a great day! :)

6 0

3 years ago

Read 2 more answers

In a bag of marbles, 6 are blue. The probability of picking out a blue marble from the bag is 3/5. How many marbles are in the b

postnew [5]

Answer: 3/5 = (6/10). There are 10 TOTAL marbles in the bag.

Step-by-step explanation:

Since it is a question of fractions, you can assume any reasonable number and work with the numbers. We know initially that there are 6 marbles and they are ALL blue and the rest are another color or colors. So BLUE = 6/10 and the other colors 4/10 for 2/5.

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3 years ago