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alexandr1967 [171]
4 years ago
12

There are 25 students in Mr. Jones’ art class. Mr. Jones is planning a project where each student needs 0.3 jar of paint. Exactl

y how much paint does Mr. Jones need for the art project?
Mathematics
1 answer:
Katarina [22]4 years ago
7 0

Answer:

7.5 jars

Step-by-step explanation:

There are 25 students in the art class.

Mr Jones is planning that for the project, each of the 25 students will need 0.3 jar of paint.

The amount of paint Mr Jones needs for this project is therefore the product of the number of students in the class by the amount of paint each student needs.

That is:

25 * 0.3 = 7.5 jars of paint

Mr Jones needs 7.5 jars of paint for the art project.

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In a class of 42 students the number of boys is 2/5 of the girls . find the number of boys and girls
Ksju [112]
In plain and short, we simply divide 42 by (2+5) and distribute accordingly.

\bf \cfrac{boys}{girls}\qquad 2:5\qquad \cfrac{2\cdot \frac{42}{2+5}}{5\cdot \frac{42}{2+5}}\implies \cfrac{2\cdot 6}{5\cdot 6}\implies \cfrac{12}{30}
3 0
3 years ago
write in slope intercept form the equasion of the line that is perpendicular to the line y=-1/2x+1 and passes through the point
cricket20 [7]

Answer:

y = 2x - 11

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = - \frac{1}{2} x + 1 ← is in slope- intercept form

with slope m = - \frac{1}{2}

Given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{-\frac{1}{2} } = 2 , then

y = 2x + c ← is the partial equation

To find c substitute (8, 5) into the partial equation

5 = 16 + c ⇒ c = 5 - 16 = - 11

y = 2x - 11 ← equation of perpendicular line

8 0
3 years ago
Which is the correct calculation of the y-coordinate of point A? 0 (0 - 0)2 + (1 - y2 = 2 O (0 - 1)² + (0- y2 = 22 (0-0)² + (1 -
dimaraw [331]

Answer:

The y-coordinate of point A is \sqrt{3}.  

Step-by-step explanation:

The equation of the circle is represented by the following expression:

(x-h)^{2}+(y-k)^{2} = r^{2} (1)

Where:

x - Independent variable.

y - Dependent variable.

h, k - Coordinates of the center of the circle.

r - Radius of the circle.

If we know that h = 0, k = 0 and r = 2, then the equation of the circle is:

x^{2} + y^{2} = 4 (1b)

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y^{2} = 4 - x^{2}

y = \pm \sqrt{4-x^{2}} (2)

If we know that x = 1, then the y-coordinate of point A is:

y = \sqrt{4-1^{2}}

y = \sqrt{3}

The y-coordinate of point A is \sqrt{3}.  

4 0
3 years ago
Please help me if you can. Please also write how you got the answer thank you.
Naily [24]
Bro this confusing at
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