Need answers pls !!! I need it now can u pls help me

Mathematics

1 answer:

gregori [183]3 years ago

3 0

I don't know which quadratic equations you have learned. you can choose the quadratic formula: x= -b +- square root of D divided by 2 times a. There is also factoring or solving by undoing.

2/6 is also equal to 1/3. so if you multiply 69 by (1/3) it equals 23. giving you 23 kit kats.

x= 4. 225 is 15 times bigger than 15. so if you divide 60 by 15 it gives you your answer of 4.

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Solve for r. r - 76 = 9

Oliga [24]

Answer:

r=85

Step-by-step explanation:

r-76=9

add 76 to both sides

r=85

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3 years ago

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You buy $16 worth of food at a restaurant. The sales tax is 5.75% and you wish to tip 10%. What is the bill after tax, how much

Mila [183]

Sales tax on food = total cost of food x sales tax = $16 x 5.75% = $0.92
Bill after tax = total cost of food + sales tax on food = $16 + $0.92 = $16.92
Tip owned = total cost of food x tip in percent = $16 x 0.1 = $1.60

Total bill = bill after tax + tip owed = $16.92 + $1.60 = $18.52

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4 years ago

An arch in the shape of the upper half of an ellipse is used to support a bridge that is to span a river 20 meters wide. The hei

MatroZZZ [7]

Title:

<h2>Check the explanation.</h2>

Step-by-step explanation:

The standard form of an ellipse is $\frac{x^{2} }{a^{2} } + \frac{y^{2} }{b^{2} } = 1$ .

The span of the river is 20 meters. As per the given condition, y-axis will pass through the middle point of the river. That is why, the value of a will be $\frac{20}{2} = 10$ .