MATHEMATICS HIGH SCHOOL

What is the answer to this problem? 7.5/12=4.2/x

Answers

Answer 1

Answer:

Answer:

x = 67.2

Step-by-step explanation:

7.5/12 = 4.2/x

First, divide 7.5 by 12.

0.625 = 42/x

Next, multiply both sides by x

0.625x = 42

Next, divide by 0.625

x = 67.2

There's your answer!

Answer 2

Answer:

Answer:

Answer is 6.720

Step-by-step explanation:

x = 168/25 = 6.720

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2. Given XYZ, if XY =YZ, and Y = 22,
find Z.

Answers

Answer:

Step-by-step explanation:

Sum of Triangle angles is 180

180 - 22 = 158

If the sides are the equal, the base angles are equal.

So, divide 158 by 2

If the circumference of a circle is 8 pi what is the area of the circle

Answers

The equation for this problem would be A=C^2 divided by 4pi. Plugging in with the numbers it would be, 8pi^2 / 4pi. This then comes to the new equation 64pi / 4 pi when solving this it comes to the solution if 16 being the answer.

Answer: 16

8pi=c
8=d
4=r
4^2pi=a
a=16pi

V=u+at u=1 a=-3 t=1/2 work out the value and of v

Answers

Answer:

v = - $(1)/(2)$

Step-by-step explanation:

Given

v = u + at ← substitute the given values for u, a, t

= 1 + ( - 3 × $(1)/(2)$ )

= 1 + (- $(3)/(2)$ )

= 1 - $(3)/(2)$

= $(2)/(2)$ - $(3)/(2)$

= - $(1)/(2)$

Which of the following is the solution to 4 | x + 3 | ≥ 8?A. x ≤ -5 and x ≥ -1
B. x ≥ -1
C. x ≤ -5 or x ≥ -1
D. x ≥ -5 or x ≥ -1

Answers

First we get rid of the 4 by dividing by it:

4 | x + 3 | ≥ 8 =>
| x + 3 | ≥ 2

Then eliminate the absolute operator like this:

| x + 3 | ≥ 2 =>

-x-3 ≥ 2 or x+3 ≥ 2

Simplify:

-x ≥ 5 or x ≥ -1=>
x ≤ -5 or x ≥ -1

That's answer C

either 4(x + 3) >= 8 or 4(x + 3) <= -8

4x + 12 >=8
4x >= =4
x >= -1
or

4x + 12 <= -8
4x <= -20
x <= -5

Answer is C

What is the value of x in the equation (x-2/3)+(1/60)=(5/6)

Answers

(x-2/3)+(1/60)=(5/6)
x-2/3= 5/6 - 1/60
x-2/3 = 49/60
x - 2 = 49/20
x = 49/20 + 2
x = 89/20

The answer is: x = 89/20 or x = 4.45.

Answer:

(x-2)/3+(1/60)=(5/6)

(x-2)/3+1/60=50/60

(x-2)/3=50/60-1/60

(x-2)/3=49/60

(x-2)=49/20

x=49/20+2

x=49/20+40/20

x=89/20

x=89/20x=4.45

D=a+b+c solve for b
I need some help

Answers

Hi Walker

d=a+b+c

Flip

a+b+c=d

Add -a to both sides

a+b+c-a=d-a

b+c=-a+d

Now add -c to both sides

b+c-c=-a+d-c

b= -a-c+d

I hope that's help:0

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What is 1.2 % of 0.5?

XY is dilated by a scale factor of 1.3 with the origin as the center of dilation to create the image X'Y'. If the slope and length of XY are m and l respectively, what is the slope of X'Y'?