All categories

2 years ago

Please help down below

Mathematics

2 answers:

Alex2 years ago

3 0

Answer:

1 7/10 is the answer

Step-by-step explanation:

let me know if not

Mnenie [13.5K]2 years ago

3 0

Answer:

1 and 7/10

Step-by-step explanation:

Start off with making the fractions have common denomators by making 1/2 into 5/10 and 4/5 into 8/10

3-1=2, but the fractions go into negative, eating into the 2 whole number.

5/10-8/10=-3/10, or 1 and 7/10 total.

I hope this helps and you have a great day :)

You might be interested in

Find+the+positive+value+for+α+if+the+radius+of+the+circle+3x^2+3y-6αx+12y-3α=0+is+4

Alik [6]

Answer:

$\alpha=3$

Step-by-step explanation:

<u>Equation of a Circle</u>

A circle of radius r and centered on the point (h,k) can be expressed by the equation

$(x-h)^2+(y-k)^2=r^2$

We are given the equation of a circle as

$3x^2+3y^2-6\alpha x+12y-3\alpha=0$

Note we have corrected it by adding the square to the y. Simplify by 3

$x^2+y^2-2\alpha x+4y-\alpha=0$

Complete squares and rearrange:

$x^2-2\alpha x+y^2+4y=\alpha$

$x^2-2\alpha x+\alpha^2+y^2+4y+4=\alpha+\alpha^2+4$

$(x-\alpha)^2+(y+2)^2=r^2$

We can see that, if r=4, then

$\alpha+\alpha^2+4=16$

Or, equivalently

$\alpha^2+\alpha-12=0$

There are two solutions for $\alpha$ :

$\alpha=-4,\ \alpha=3$

Keeping the positive solution, as required:

$\boxed{\alpha=3}$

8 0

3 years ago

What's the answer for 3/4 (x+3)=9

Vitek1552 [10]

We want to solve the equation :

$\displaystyle{ \frac{3}{4}(x+3)=9$

first, multiply both sides by 4:

$\displaystyle{ \cancel{4} \cdot \frac{3}{ \cancel 4 }(x+3)=4\cdot 9$

$\displaystyle{ 3(x+3)=36$

divide both sides by 3:

$x+3=12$

add -3 to both sides:

$x=9$

Answer: x=9

3 0

3 years ago

What is the missing term (10-4x^2)-(7x+?) =3x-6x^2

Yuliya22 [10]

Hello,

(10-4x²)-(7x+?)=3x-6x²
==>10-4x²-7x-3x+6x²=?
==>?=2x²-10x+10

8 0

3 years ago

How do I Use the numbers 8, 6, and 2 and one to write an expression that includes an exponent and has a value of 8.

liberstina [14]

Answer:

Step-by-step explanation:

8,6,2, and 1

(2^6 / 8) * 1 = (64/8) * 1 = 8 * 1 = 8

7 0

3 years ago

Two sporting goods stores are having discount sales on basketballs at one store a basketball is on sale for 25% off the regular

Reil [10]

Answer:

0.66

Step-by-step explanation:

24.95 x 25%=6.23

24.94 - 6.23 = 18.72

25.80 x 30% = 7.74

25.80 - 7.74 = 18.06

18.72 -18 .06 = 0.66

7 0

2 years ago

Read 2 more answers