Please explain how you got your answer also, thank you :)

Answer: a=225

Step-by-step explanation:

[tex]a > 0\\\\x^2=a\\\\x^2-a=0\\\\(x-\sqrt{a} )(x+\sqrt{a}) =0\\\\\sqrt{a} -(-\sqrt{a} )=30\\\\2\sqrt{a} =30\\\\\sqrt{a} 15\\\\a=15^2\\\\a=225\\\\Proof:\\\sqrt{225} -(-\sqrt{225} )=2*\sqrt{225} =2*15=30\\\\[/tex]

Answer:

6.35

Step-by-step explanation:

9.59-3.24=6.35

Answer:

Step-by-step explanation:

Answer:

AC = AB + BC

18 = (2X - 4) + (3X + 2)

18 = 5X - 2 ( add/subtract like terms)

20 = 5X (-2 take over otherside - 18 + 2)

X = 4

SUB X INTO AB AND BC

AB = 2(4) - 4 = 4

BC = 3(4) + 2 = 14

==============================================

Explanation:

The degree of separation from the two cities is 30-7 = 23 degrees.

Let's say the point C is at the center of the earth. This would mean angle BCA is 23 degrees.

Any longitude line helps form what is known as a great circle or orthodrome. This is a math term that describes a circle that is centered at the same location as the sphere's center. Imagine that you can wrap a string around the earth and this string only follows this particular longitude line. This string is effectively a vertical equator in a way. The question is: what is the length of this string?

Well that would be the circumference of the circle with radius 3960 miles because the longitudinal circle has the same radius as the sphere.

That approximates to...

C = 2*pi*r

C = 2*pi*3960

C = 24,881.4138164311

C = 24,881.41

So a bit less than 25 thousand miles. I used the calculator's stored version of pi rather than something like 3.14 to get the best accuracy possible. This is the full string's length if we want to travel the entire distance around the globe but stay entirely on this particular longitude line

We don't want the full string's length. Instead, we want just a fractional portion of it. Specifically, we want 23/360 of it because of the central angle of 23 degrees. This will give us the distance between the two cities.

So (23/360)*24,881.4138164311 = 1,589.64588271642

This then rounds to 1589.65 when rounding to the nearest hundredth.

The distance between the two cities is approximately 1589.65 miles

This is comparable to the driving distance from Los Angeles, CA to Houston, TX (approximately 1547 miles).

Answer:

1) 20

2) -10

Step-by-step explanation:

1) 2x + 3y² =

2(4) + 3(-2)² =

8 +3(4)=

8 + 12 =

20

2) -5(x + y) =

-5(4 + -2) =

-5(2) =

-10

Answer:

we just need to put the values of x,y,z to

x = 4

y = -2

z = 7

1) 2x + 3[tex]y^{2}[/tex]

  2(4) + 3([tex]-2^{2}[/tex])

  8 + 3 (4)

  8 + 12

 = 20

2) -5(x+y)

   -5 (4 + (-2))

   -5 (4 -2)

   -5 (2)

    = -10

Answer:

Mark me as brainliest ❤️

Answer:

Ello mate, the answer to your problem is 7,250,000.

Step-by-step explanation:

Answer:

I believe its A.

Step-by-step explanation:

a + (n-1) b

= 3 + (7-1) 3

= 3 + 6(3)

= 3 + 18

= 21

Answer:

192

Step-by-step explanation:

given the geometric sequence : 3, 6, 12, ...

T1 = 3

r = 6/3 = 2

T7 =?

T7 = T1. r^(7-1)

= 3 . 2^(7-1)

= 3. 2^6

= 3. 64

= 192

Answer:

The similar triangles are XYZ and MNP. Therefore, the answer is B.

Answer:

[tex] \frac{13}{21} , \: \frac{2}{3} , \: \frac{6}{7} [/tex]

Me too!

My other favourite subject is science.

Mine is also Math,lol all ot the answer and you .

I like math because it’s my best subject.

Answer:

(-2, 3)

Step-by-step explanation:

For x-4 you go left four places and y+6 go up 6 places

Answer:

(-2, 3)

Step-by-step explanation:

Point P has coordinates (2, -3).

The translation is (x - 4, y + 6) which means subtract 4 from the x-coordinate and add 6 to the y-coordinate.

The x-coordinate of point P is 2. Subtract 4 from it, you get -2.

The y-coordinate of point P is -3. Add 6 to it to get 3.

The coordinates of the translated point are (-2, 3).

Answer:

Step-by-step explanation:

[tex]f(x)=-2x+4\\g(x)=2x^2-2x-8\\(g\circ f)(x)=g(f(x))\\=g(-2x+4)\\=2(-2x+4)^2-2(-2x+4)-8\\=2(4x^2-16x+16)+4x-8-8\\=8x^2+(-32x+4x)+(32-8-8)\\=8x^2-28x+16[/tex]

Answer:

Loss Amount: 175; Price: 3325

Step-by-step explanation:

You can multiply 3500 by 0.05 (which is 5% in decimal) to find how much is the loss. Then, you subtract the loss from the base price to find the new price.

Answer:

Loss =175, sold = 3325

Step-by-step explanation:

He bough at 3500

So 100 percent is 3500

And they said he had a 5% loss

So in other words, he sold it to Alex at 95% of the price he bought

So

3500 x 95%

3500 x 95/100

=3325

This is the price when Hitler sold it to alex

Now how much did Hitler lose?

3500 - 3325

=175

Answer:

A) Irrational, because it is not a terminating or repeating decimal.

Step-by-step explanation:

Every time a square root results in a decimal, it will always never end, and never repeat. The square root of 35 qualifies for both of these qualities, therefore, making the answer (A). Hope this helps!

Answer:

For a line to be parallel it must have the same slope. So the slope of the new equation is 6.

The slope intercept form is y=mx+b. And we have a point (3,-5). Plug in what we know....

-5=6(3)+b

Solve for b (the y-intercept)

b= -23

Therefore.... y=6x-23

??? does that help????

Answer:

14810 votes

Step-by-step explanation:

The canidate won, so that means that they were the 7 instead of the 5.

Then you divide 20734 by 7, to see how many votes were for each "1". That's 2962.

Now you know that every "1" is worth 2962. Since the other candidate got 5, you multiply 5 by 2962 which is 14810.

The other candidate got 14810 votes.

Hope that made sense

Answer:

The other opponent that lost got 14 810 votes.

Step-by-step explanation:

Hopefully the picture is clear and understandable

:)

Answer:

No, It is not equal to a 60% discount.

Step-by-step explanation:

Think of this. I go into a store and everything is 50% off and I have a coupon myself that is a 50% off discount for a specific item. It may seem like the item is now free, but it isn't. Imagine the item was $1 before any discount. Then the store took 50% off of the $1, leaving it at $0.50. So now with my discount of 50% off the item I will be taking this 50% off of $0.50 = my final discounted cost of $0.25.

Hope I helped you understand :)

Answer:

M={½,11/2}

Step-by-step explanation:

M={x1+x2/2,y1+y2/2}

M={2+-1/2,4+7/2}

M={½,11/2}

Answer:

8/10 = 4/5

Step-by-step explanation:

hi <3

i'm not sure of which method you will have been taught but i'll try to explain the method i was shown.

so, you need to multiply the coefficient of x^2 by the last value

3 x -12 = -36

now, you need to find two values that multiply to make -36 but add to make 5.

9 and 4 would work. it would have to be positive 9 and negative 4, as these would subtract to give the 5 that you need

now we have:

(x - 4)(x + 9)

however, we need to achieve the 3 from somewhere so it needs to be divided somewhere

9 is divisible by 3 so you can divide it there. as 4 cannot divide by 3, you would move the 3 up to be the coefficient.

thus, your final answer would be:

(3x - 4)(x + 3)

hope this helps :)

Answer:

it's gonna be 3(X*2 + 4X - 4)

Step-by-step explanation:

Just factor out 3 from the expression

Answer:

810 km/h

I hope it's helps you

Answer:

2.956

Step-by-step explanation:

[tex]\frac{295.6}{10^2}[/tex]

= [tex]\frac{295.6}{100}[/tex]

= 2.956

Answer:

873.7936

Step-by-step explanation:

295.6 divided by 10 is

29.56.

This can be easily done by moving the decimal up one place to the left. For 29.56 to the power of 2 is really just 29.56 * 29.56

29.56 * 29.56 is

873.7936.

Hope this helps!

Answer:

I think its b and c but I might be wrong let me check again

Step-by-step explanation:

Answer:

Option 2 and Option 3 is correct

Since u helped me it's the least i can do

Explanation:

I Promise this is the right answer

(Happy to Help)

(0.<)

Answer:

53.8462%

1.857

Step-by-step explanation: