MATHEMATICS MIDDLE SCHOOL

Solve this quadratic equation using the quadratic formula.

5 - 10x - 3x2 = 0

Answers

Answer 1
Answer:

Answer:

Step-by-step explanation:

I have enclosed a picture of the quadratic formula because I cannot seem to write the proper formula since it wont let me

✯Hello✯

↪  Alright so first we need to work out values for A B AND C

↪  We need to rearrange this since its the wrong way around

↪  A = -3

B= -10

C= 5

↪  we substitute these values and we get x=0.44 and x=-3.78

❤Gianna❤

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A store owner bought a jacket for $20. She sold it in her store for $35. What is the percent of the markup on the jacket?

Answers

If a store owner bought a jacket for $20 and sold it for $25 the markup would be 40%

What is the area of this rectangle in square yards?

Answers

In the comment of the other answer, you said that the rectangle is 24 x 18 ft.

First, we have to find out how many square feet that is, and then we can convert it to square yards.

The area of a rectangle is the length multiplied by the width.

A = l x w
A = 24 x 18
A = 432 square feet

To find out how many square yards that is, we divide it by 3, because 1 yard is 3 feet.

432 ÷ 3 = 144

The area of a 24x18ft rectangle is 144 square yards.

Tina is making rectangular signs. Each poster has an area of 1800 square inches and the length is 30 inches more than the width. Find the length and width of her sign. If x represents the width of each sign, select all of the equations that could be used to solve this problem. 2(x)+2(x+30)=1800 (x+30)(x)=1800 x(30x)=1800 x(x+30)=1800 Part 2 Find the dimensions of each rectangular sign. width = inches length = inches

Answers

Let the width be x. Since the length is 30inches longer than the width, the length is 30 + x.
Area = length x width = (30 + x)(x)
i.e. (30 + x)(x) = 1800 square inches.

30x + x^(2) =1800 \n x^(2) +30x-1800=0 \n x^(2) -30x+60x-1800=0 \n ( x^(2) -30x)+(60x-1800)=0 \n x(x-30)+60(x-30)=0 \n (x+60)(x-30)=0
x + 60 = 0 or x - 30 = 0
x = -60 or x = 30
but the width cannot be a negative number, hence x = 30inches
i.e. width = 30 inches
length = 30 + 30 = 60 inches.

Given a = 4, b = -2 and c = 8, evaluate 3abc.

Answers

3(4)(-2)(8) is what the equation looks like all you have to do is multiply all these numbers so 3 times 4 equals 12 and 12 times -2 equals -24 then lastly multiply -24 by 8 which gives you the product of -192.
-192 is the answer. you get this by multipling 3 times 4 times 8 times -2.

Express 756 as a product of its prime factors

Answers

 756 = 2 ^(2) *3^3*7

On a map of the united states , 24 centimeters represent 18 miles .how many centimeters reprsent one mile. How long is the line segment between A and B in centimeters? If A and B represent 2 cities what is the actual distance between the two cities

Answers

1.33 equals one mile and 24 centimeters. Also 18 miles is the actual distance. I hope this helped but i was a little confused but i am pretty sure the answers are right
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