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2 years ago

Please help!

Mathematics

2 answers:

ddd [48]2 years ago

7 0

Answer:

C is wrong. The correct answer is the square root of 65. I'm a skilled math student so not only do I know this is correct, but i also just took the test and scored a 100!

Step-by-step explanation:

4^2+7^2=c^2

65=c^2

square both of them you get the square root of 65=C.

Hope this helps!!

AP2TMH♥

Art [367]2 years ago

5 0

Answer:

I believe it is C. The square root of 47

Step-by-step explanation:

Because the distance from her house to the pool is about 6 and the square root of 47 is 6.8

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sesenic [268]

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2 years ago

Mei subscribed to a magazine at a rate of $24 for 12 issues. When she placed her order, Mei used a coupon that added 3 free bonu

lord [1]

Answer:

initial cost per issue=$2

after subscription cost per issue=$1.6.

Step-by-step explanation:

Initially , Mei subscribed $24 for 12 issues for a magazine .When Mei used a coupen then 3 free bonus issues added to her subcsription .Therefore we can see the coupon reduces the cost per issue of Mei's subscription. Before use of coupon the cost of each issue is $2 and after added 3 more issue of coupon then the cost per issue is $1.6

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3 years ago

Read 2 more answers

Can't figure it out!!

Zanzabum

$\bf slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ f(x_2)}}-{{ f(x_1)}}}{{{ x_2}}-{{ x_1}}}\impliedby 
\begin{array}{llll}
average\ rate\\
of\ change
\end{array}\\\\
-------------------------------\\\\
f(x)= \cfrac{1}{x} \qquad 
\begin{cases}
x_1=2\\
x_2=b
\end{cases}\implies \cfrac{f(b)-f(2)}{b-2}=-\cfrac{1}{10}
\\\\\\
\cfrac{\frac{1}{b}-\frac{1}{2}}{b-2}=-\cfrac{1}{10}\implies 
\cfrac{\frac{2-b}{2b}}{b-2}=-\cfrac{1}{10}\implies \cfrac{2-b}{2b}=-\cfrac{b-2}{10}
\\\\\\
$

$\bf \cfrac{2-b}{2b}=\cfrac{2-b}{10}\implies 20-10b=4b-2b^2\impliedby cross-multiplying
\\\\\\
2b^2-4b-10b+20=0\implies 2b^2-14b+20=0
\\\\\\
b^2-7b+10=0\implies 
(b-2)(b-5)=0\implies b=
\begin{cases}
\boxed{5}\\
2
\end{cases}$

8 0

2 years ago

1. x²+2xy+y²<br>2. x²-8x+16<br>3. 16a⁴_24a²b²+9b

ale4655 [162]

Answer:

1.(x+y)²

2. (x-4)²

3. (4a²-3b²)²

6 0

2 years ago

80km is 9% of what distance?

seropon [69]

Answer:

888.89 km

Step-by-step explanation:

Write the given question as an equation and solve.

80 km = 0.09 × (what distance)

(80 km)/0.09 = what distance . . . . . divide by the coefficient of the variable

888.89 km ≈ what distance

80 km is 9% of 888.89 km

3 0

2 years ago