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3 years ago

Does 3.2 - 4d=2.3d+3 no solution or identity

Mathematics

2 answers:

Fynjy0 [20]3 years ago

7 0

D=0.04286 is the answer

Setler79 [48]3 years ago

4 0

This equation does have a solution and it is 0.03174603

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Steve cut a circular piece of mirror glass with the diameter of 20 cm in order to make a frame for it he needed to calculate the

Marianna [84]

Answer:

The circumference is 62.8 cm.

Step-by-step explanation:

To find the circumference, use 3.14 * 20 = 62.8

7 0

4 years ago

Y=-3×-2 graph can someone please help me with this please

Basile [38]

Answer:

Step-by-step explanation:

Negative ×negative always gives gives a positive

8 0

2 years ago

Kerry and three friends went out for dinner. They split a large pizza and each person had a salad and a soda. They want to leave

klio [65]

Answer:

Each person will pay $ 7.20

Step-by-step explanation:

First we find the total bill

Pizza $18.60

Salad $2.50

Total $ 23.35

Sales Tax would be= 8 1/4% of $ 23.35 =$ 1.926= $ 1.93

Tip = 15% of $ 23.35= $ 3.5025

Total Bill paid= $ 23.35 + $ 1.93+ $3.50= $ 28.7825 or $ 28.78

Now dividing the bill among 4 persons = $ 28.78/4= $ 7.196 or $ 7.20

Paying the bill equally is better and convenient than paying alone as each person gets an equal share of pizza, salad and the soda.

3 0

3 years ago

Solve for x.

Ivahew [28]

ANSWER

$x=\frac{2-\sqrt{10}} {3}$

or

$x=\frac{\sqrt{10}+2} {3}$

We have

$3x^2-4x-2=0$

Since we cannot factor easily, we complete the square.

Adding 2 to both sides give,

$3x^2-4x=2$

Dividing through by 3 gives

$x^2-\frac{4}{3}x= \frac{2}{3}$

Adding $(-\frac{2}{3})^2$ to both sides gives

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

The expression on the Left Hand side is a perfect square.

$(x-\frac{2}{3})^2= \frac{2}{3}+\frac{4}{9}$

$\Rightarrow (x-\frac{2}{3})^2= \frac{10}{9}$

$\Rightarrow (x-\frac{2}{3})=\pm \sqrt{\frac{10}{9}}$

$\Rightarrow (x)=\frac{2}{3} \pm {\frac{\sqrt{10}}{3}$

Splitting the plus or minus sign gives

$x=\frac{2- \sqrt{10}} {3}$

or

$x=\frac{\sqrt{10}+2} {3}$

3 0

3 years ago

Read 2 more answers

What is the solution to the equation? <br> x – 19 = 1

Romashka-Z-Leto [24]

+ 19 on both sides, -19 becomes 0, 1 becomes 20 x=20

3 0

3 years ago