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3 years ago

4.

Mathematics

1 answer:

kow [346]3 years ago

5 0

Answer:

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

(x + 7)² + (y - 5)² = 16 ← is in standard form

with centre = (- 7, 5 ) and r = $\sqrt{16}$ = 4 → B

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Logan and Zoey went out to dinner. Zoey’s dinner bill was $5 more than one-half of Logan’s bill If the total of the two bills co

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Answer:

$23.42

Step-by-step explanation:

zoey's bill= .5x+5

logan's bill= x

.5x+5+x=60.26

1.5x+5=60.26

1.5x=55.26

x=36.84

.5(36.84)+5= 23.42

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3 years ago

Given ABC find the values of x and y. In your final answer, include all of your calculations.

kow [346]

So with this, we will be using proportions. To solve for x, our proportion will be $\frac{x}{6} =\frac{6}{x-9}$

Firstly, cross-multiply: $x^2-9x=36$

Next, subtract 36 on both sides: $x^2-9x-36=0$

Next, replace -9x with 3x-12x $x^2+3x-12x-36=0$

Next, factor x^2+3x and -12x-36 separately: $x(x+3)-12(x+3)=0$ . After, rewrite it as $(x-12)(x+3)=0$

Next, solve for x separately in the two parentheses:

$x-12=0\\ x=12$

$x+3=0\\ x=-3$

Since we can't have a negative length, x = 12.

To solve for y, our proportion will be $\frac{y}{9} =\frac{12}{y}$

Firstly, cross-multiply: $y^2=108$

Next, just square root each side, and your answer will be (rounded to hundredths) $y=10.39$

In short, x = 12 and y = 10.39.

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3 years ago

How do you figure out what is 1/4 of 10.

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You can multiply 10 by 1/4 or .25

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Read 2 more answers

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Answer:

10⁵

Step-by-step explanation:

am always eight im sue

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