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stepladder [879]

3 years ago

11

Convert 1/2 yard in inches

1 answer:

Tom [10]3 years ago

8 0

1/2 yard =18 inches

(multiply value by 36)

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Sarah bought pencils and markers for school. She bought 3 times as many pencils as markers.

Serhud [2]

Answer:

Sarah bought 30 pencils

Step-by-step explanation:

1. Let define p, as the number of pencils bought, and m, as the number of markers bought.

2.

$0.15p+0.30m=7.50$

$p=3m$

3. Substitute p in the first equation to 3m since p=3m as defined.

$0.15(3m) + 0.30m=7.50\\0.45m+0.30m=7.50\\0.75m=7.50\\m=10$

plug m into equation p=3m to find the number of pencils bought

$p=3m=3(10)=30$

7 0

3 years ago

If 3x−y=12, what is the value of <br> 8x<br> 2y<br> ?

anygoal [31]

If 3x-y=12, what is the value of 8x/2y?

Answer:

$\frac{8x}{2y} =\frac{4x}{3x-12}$

Step-by-step explanation:

$3x-y=12$

$-y=12-3x$

$y=3x-12$ -------------------------(equation 1)

Now,

$\frac{8x}{2y} =\frac{8x}{2(3x-12)}$ ---------(from equation 1)

$=\frac{8x}{6x-24}$

$=\frac{8x}{2(3x-12)}$

$=\frac{4x}{3x-12}$

Therefore, the value of $\frac{8x}{2y} =\frac{4x}{3x-12}$

3 0

3 years ago

A right △ABC is inscribed in circle k(O, r). Find the radius of this circle if:

natta225 [31]

We have been given that a right △ABC is inscribed in circle k(O, r).

m∠C = 90°, AC = 18 cm, m∠B = 30°. We are asked to find the radius of the circle.

First of all, we will draw a diagram that represent the given scenario.

We can see from the attached file that AB is diameter of circle O and it a hypotenuse of triangle ABC.

We will use sine to find side AB.

$\text{sin}=\frac{\text{Opposite}}{\text{Hypotenuse}}$

$\text{sin}(30^{\circ})=\frac{AC}{AB}$

$\text{sin}(30^{\circ})=\frac{18}{AB}$

$AB=\frac{18}{\text{sin}(30^{\circ})}$

$AB=\frac{18}{0.5}$

$AB=36$

Wee know that radius is half the diameter, so radius of given circle would be half of the 36 that is $\frac{36}{2}=18$ .

Therefore, the radius of given circle would be 18 cm.

8 0

4 years ago

What is the coefficient of the term 67xy 1/7, 6, 6xy, and 6/7 Which one do I pick?

Scorpion4ik [409]

You would pick You would choose 6xy, or 67xy, unless that is with the 1/7,
and this is because the definition of a coefficient is "<span>a numerical or constant quantity placed before and multiplying the variable in an algebraic expression",
so both of these have variables.</span>

6 0

3 years ago

Someone please help me out with this?

expeople1 [14]

I had the same thing what school do you go to i got it wrong

5 0

3 years ago