MATHEMATICS MIDDLE SCHOOL

Given y=x2 + 9x + 20 find the zeroes.

Answers

Answer 1
Answer:

Answer:

x=-5   x=-4

Step-by-step explanation:

y=x^2 + 9x + 20

We need to factor the equation

What 2 numbers multiply to 20 and add to 9

4*5 = 20

4+5 =9

y=(x+5) (x+4)

To find the zero's we set the equation equal to zero

0= (x+5) (x+4)

Using the zero product property

x+5 = 0   x+4=0

x=-5   x=-4

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Which statement correctly compares 8/15 and 5/8 A. 8/15 > 5/8 B. 8/15 < 5/8 C. 8/15 = 5/8

Answers

The one is right is B. because 5/8 is bigger than 8/15.
we can find a common denominator
8/15 becomes 64/120
5/8 becomes 75/120
from this we can see that 5/8 is larger so the answer is B

A stereo at an electronics store originally costs $300, but it is on sale for 25% off. If a customer buying the stereo has a coupon for $40.00 off of any purchase, what will his final price be on the stereo?

Answers

Answer: $185


Step-by-step explanation:

Given: The original cost of the stereo at an electronics store= $300

Discount on the stereo= 25%=0.25

The price of stereo after discount= $300-0.25 of $300

=300(1-0.25)\n=300(0.75)=\$225

If a customer buying the stereo has a coupon for $40.00 off of any purchase, then the final price of the stereo = $225-40=$185

Hence, the final price of stereo which customer has to pay=$185

Answer:

$185 will his final price be on the stereo.

Step-by-step explanation:

Given : A stereo at an electronics store originally costs $300, but it is on sale for 25% off. If a customer buying the stereo has a coupon for $40.00 off of any purchase.

To find : What will his final price be on the stereo?

Solution :

A stereo at an electronics store originally costs $300.

Discount on the stereo = 25%

The price of stereo after discount is given by,

P=300-25\%\text{ of }300

P=300-(25)/(100)* 300

P=300-75

P=\$225

If a customer buying the stereo has a coupon for $40.00 off of any purchase.

i.e. the final price of stereo is $225-$40=$185

Therefore, $185 will his final price be on the stereo.

Frank and Linda just finished a meal and received their bill for $47.60. They would like to leave their server a 20 percent tip. Which expression could be used to find the total bill including gratuity?

Answers

100%of their bill is $47.60

they want to pay 20% additionally, so that would be written as . . .

$47.60(100% + 20%)

$47.60(120%)

$47.60(1.20)

The expression that can be used to determine the total bill is 1.20 x ($47.60)

What is the expression?

The total bill paid is the sum of the cost of the meal and the value of the tip.

Cost of the meal = $47.60

Cost of the tip = 0.20 x $47.60

Total cost of the meal = 1.20 x ($47.60)

To learn more about the total cost of an item, please check: brainly.com/question/25717996

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A vendor has 14 balloons for sale: 7 are yellow, 3 are red, and 4 are green. A balloon is selected at random and sold. If the balloon sold is yellow, what is the probability that the next balloon selected at random is also yellow

Answers

The first probability was 7/14. There is now one less balloon and one less yellow so it is 6/13.

what is the volume of a rainwater collection tank that is shaped like a cylinder with a diameter of 10 cm when using 3.14 for\pi

Answers

The equation to find the volume of a cylinder is V=\pi×r²×h. To find r you just divide the diameter which is 10 by 2 so r is 5. Just plug everything in and solve, V=\pi×5²×243.84. You should get V≈19,151.15

Which of the following lists the angles from smallest to largest?M, S, T
T, M, S
S, M, T

Answers

The answer TMS

Step-by-step explanation:

Answer:

TMS

Step-by-step explanation:
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