All categories

2 years ago

If you have 12 circles an you shade in3/4 of them, how many circles do you shade?

Mathematics

1 answer:

aleksandrvk [35]2 years ago

4 0

This is a formula if you need one. DON'T forget to cross-multiply

3/4 = x/12

You might be interested in

Solve for g. C = d/g

icang [17]

Answer:

I believe that g=dc

Step-by-step explanation:

You swap positions with g and c along with their sign of operation.

7 0

2 years ago

Please help me with this one

Vladimir79 [104]

Is 10 and 15 because they both have a value of .909

8 0

2 years ago

Question 12 (2 points)

Leviafan [203]

Solving is :
X=2
Y=1

Step by step
(2x-3) + 5 = 3x
2x+2=3x
X=2

Substitute x by 2
Y=1

5 0

2 years ago

Write the slope intercept form of an equation with a slope of 5 and y-intercept of -4

Delvig [45]

Answer:

y = 5x - 4

Step-by-step explanation:

5 is the slope so it goes in front of the x and -4 is the y Intercept so it goes last.

5 0

2 years ago

5cosx -2sin(x/2) +7=0<br>Help me to find x step by step<br>pls

miskamm [114]

Answer:

x = 180

Step-by-step explanation:

First, you need to know

1. Double-angle formula:

cos(2x) = $cos^{2}x - sin^{2}x$

2. Pythagorean identity:

$cos^{2}x + sin^{2}x = 1$

Back to your problem, replacing the variable by the above:

$5cosx-sin\frac{x}{2}+7 = 0$

$5(cos^{2}\frac{x}{2}-sin^{2}\frac{x}{2}) - 2sin\frac{x}{2} + 7 = 0$ By Double-angle formula

$5(1 - 2sin^{2}\frac{x}{2}) - 2sin\frac{x}{2} + 7 = 0$ By Pythagorean identity

Given $y = \frac{x}{2}$

$5(1-2sin^{2}y) - 2siny + 7 = 0$

$10sin^{2}y+2siny-12=0$

$5sin^{2}y+siny-6=0$

$(5siny + 6)(siny - 1)=0$ , we know -1 < sinx < 1, for every x ∈ R

$siny = 1, y =90$

$y = \frac{x}{2}$

$x = 180$

8 0

2 years ago