All categories

2 years ago

Please help i need to pass this test to pass the class

Mathematics

1 answer:

dangina [55]2 years ago

4 0

The answer is C -1/2.

You might be interested in

Plz help me ( no link plz) if you answer right i will make brainly and 15 points

lukranit [14]

Answer:

7.5

Step-by-step explanation:

let x be the ticket and y the popcorn

x+y=15

x+3y=30

solve for x and y using simultaneous equations

x=7.5

y=7.5

3 0

2 years ago

A pharmacist has 80 milliliters of a 25% saline solution. Which expression can be used to find the percentage concentration of t

Ugo [173]

0.25 and y=80.01%. And the rest are wrong.

5 0

3 years ago

2. The center of a circle is at (4,-5). The radius of the circle is 10 units. Write the equation of the

abruzzese [7]

Answer:

Step-by-step explanation:

8 0

1 year ago

The circumference of a circle is 22 cm.

valkas [14]

$\bf \: Circumference \: of \: a \: circle = 2\pi \: r$

$\implies22 = 2 \times \dfrac{22}{7} r$

$\implies22 = \dfrac{44}{7} \times r$

$\implies \: r = \dfrac{22 \times 7}{44}$

$\implies \boxed{ r = \dfrac{7}{2} }$

Now,

$\bf \: Area \: of \: circle = \pi {r}^{2}$

$\rightarrow \: \frac{22}{7} \times ({ \frac{7}{2}) }^{2}$

$\rightarrow \frac{22}{ \cancel7} \times \frac{ \cancel{49}}{4}$

$\rightarrow \: 22 \times \frac{7}{4}$

$\rightarrow \: 11 \times \frac{7}{2}$

$\rightarrow \frac{77}{2}$

$\rightarrow \: 38.5 \: cm {}^{2}$

Area of rectangle = 38.5 cm².

7 0

2 years ago

Solve the following system of equations by elimination. What is the value of x? x = 1.5 x = -1.5 x = 8 x = -8

Andru [333]

Using the elimination method, the value of x in the system of equations is calculated as: 8.

<h3>How to Solve a System of Equations by Elimination?</h3>

To solve a system of equations given using the elimination method, do the following:

Multiply 2x - 5y = 1 by 2 and multiply -3x + 2y = -18 by 5 to get the following:

4x - 10y = 2 --> eqn. 1

-15x + 10y = -90 --> eqn. 2

Add

-11x = -88

Divide both sides by -11

x = 8

Learn more about system of equations on:

brainly.com/question/14323743

#SPJ1

8 0

1 year ago