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3 years ago

25% of the items were on sale. There were 120 items How many were on sale?

Mathematics

2 answers:

Liono4ka [1.6K]3 years ago

8 0

There were 30 items on sale. Hope this helps and please give Brainliest!

Sergeu [11.5K]3 years ago

5 0

The answer is 30 items.

25% is one fourth of 100%, so you take 120 and divide it by 4, ending up with 30. :)

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Multiply 3xyz ^ 2 / 6y ^ 4 by 2y / x z ^ 4

Marat540 [252]

$\dfrac{3xyz^2}{6y^4}=\dfrac{3}{6}\cdot\dfrac{xyz^2}{y^4}=\dfrac{1}{2}\cdot\dfrac{xz}{y^3}=\dfrac{xz}{2y^3}\\\\\\\dfrac{3xyz^2}{6y^4}\cdot\dfrac{2y}{xz^4}=\dfrac{xz^2}{2y^3}\cdot\dfrac{2y}{xz^4}=\dfrac{2}{2}\cdot\dfrac{xyz^2}{xy^3z^4}=1\cdot\dfrac{1}{y^2z^2}=\dfrac{1}{y^2z^2}$

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3 years ago

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What's is the answer to the equation 4(x+7)=9(x-1)+22 ?

Aleks [24]

Hello, there!

What's the answer to the equation 4(x + 7) = 9(x - 1) + 22

Answer: x = 3
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Explanation:

First, let's simplify this
4 * x = 4x

4 * 7 = 28

Now, we have 4x + 28 = 9(x - 1) + 22

Now, let's simplify the right side by using the distributive property as well.

9 * x = 9x

9 * -1 = -9

Now, we have 4x + 28 = 9x -9 + 22

Let's combine like terms on the right side

-9 + 22 = 13

Npw, we have 4x + 28 = 9x + 13

Let's isolate the x. To do this, we will first subtract 28 from each side.

4x + 28 = 9x + 13
-28 -28

4x = 9x - 15

Now, we will subtract 9x from each side.

4x = 9x - 15
-9x -9x

-5x = -15

Now, we will multiply each side by -1 to make x a positive number.

-5x = -15
*-1 *-1

5x = 15

Finally, we will simplify this completely. To do this, we will divide each side by 5.

5x = 15
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x = 3

Our final answer is x = 3

I hope I helped!

Let me know if you need anything else!

~ Zoe

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4 years ago

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Misha Larkins [42]

Answer:

The answer to the expression in simplest form is:

$\frac{\frac{1}{3}}{\frac{1}{4}}=\frac{4}{3}$

Step-by-step explanation:

Given the function

$\frac{\frac{1}{3}}{\frac{1}{4}}$

solving to get the simplest form

$\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{\frac{a}{b}}{\frac{c}{d}}=\frac{a\cdot \:d}{b\cdot \:c}$

$\frac{\frac{1}{3}}{\frac{1}{4}}=\frac{1\cdot \:4}{3\cdot \:1}$

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Thus, the answer to the expression in simplest form is:

$\frac{\frac{1}{3}}{\frac{1}{4}}=\frac{4}{3}$

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3 years ago

Being 10 miles apart, two cars started moving towards each other. After one hour they met, and during that time the first car co

Vladimir [108]

The speed of the first car was 6 miles/hour

<h3>Further explanation</h3>

Acceleration is rate of change of velocity.

$\large {\boxed {a = \frac{v - u}{t} } }$

$\large {\boxed {d = \frac{v + u}{2}~t } }$

<em>a = acceleration ( m/s² )</em>

<em>v = final velocity ( m/s )</em>

<em>u = initial velocity ( m/s )</em>

<em>t = time taken ( s )</em>

<em>d = distance ( m )</em>

Let us now tackle the problem!

<u>Given:</u>

Distance between two cars = d = 10 miles

Time Taken = t = 1 hour

Distance covered by the first car = d₁ = 2 + d₂

<u>Unknown:</u>

Speed of the first car = v₁ = ?

<u>Solution:</u>

$d = d_1 + d_2$

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$10 = 2 + 2d_2$

$10 - 2 = 2 d_2$

$8 = 2 d_2$

$d_2 = 8 \div 2$

$d_2 = 4 \texttt{ miles}$

$\texttt{ }$

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$v_1 = d_1 \div t = 6 \div 1 = 6 \texttt{ miles/hour}$

<h3>Learn more</h3>

Velocity of Runner : brainly.com/question/3813437
Kinetic Energy : brainly.com/question/692781
Acceleration : brainly.com/question/2283922
The Speed of Car : brainly.com/question/568302

<h3>Answer details</h3>

Grade: High School

Subject: Physics

Chapter: Kinematics

Keywords: Velocity , Driver , Car , Deceleration , Acceleration , Obstacle

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3 years ago

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maxonik [38]

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