Ask question

Ask question

All categories

3 years ago

13

Plz help!!!!! Please!

1 answer:

tresset_1 [31]3 years ago

7 0

For number 6, Tom's unit rate was 0.1254 per meter. Samma's unit rate 0.1299 per meter. So Samma had a faster unit rate by 0.0045.

For number 8:
$10.45 ÷ 5 = $2.90
So the unit rate is $2.90.

Hope this helps. :)

You might be interested in

Mira has breakfast at a restaurant. She leaves a 20% tip of $1.80.

lutik1710 [3]

let's say the breakfast price was "x", so that's the 100%, and we know she gave 20% of that and that is 1.80.

so, 1.80 is 20%, and "x" is the 100%, what is "x"?

$\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 1.80&20\\ x&100 \end{array}\implies \cfrac{1.80}{x}=\cfrac{20}{100}\implies \cfrac{1.8}{x}=\cfrac{1}{5} \\\\\\ 9.0=x\implies 9=x$

3 0

3 years ago

Consider f (x) = StartRoot x squared minus 1 EndRoot and g (x) = StartRoot x squared + 1 EndRoot. What value(s) of x would make

dalvyx [7]

Answer:

Any value of x

<em></em>

Step-by-step explanation:

Given

$f(x) = \sqrt{x^2 - 1}$

$g(x) = \sqrt{x^2 + 1}$

Required

What value of x is $f(g(x)) = g(f(x))$

Solving for f(g(x))

$f(x) = \sqrt{x^2 - 1}$

$f(g(x)) = \sqrt{(\sqrt{x^2 + 1})^2 - 1}$

Solve the inner square

$f(g(x)) = \sqrt{(x^2 + 1 - 1}$

$f(g(x)) = \sqrt{x^2 } }$

$f(g(x)) = x$

Solving g(f(x))

$g(x) = \sqrt{x^2 + 1}$

$g(f(x)) = \sqrt{(\sqrt{x^2 - 1})^2 + 1}$

$g(f(x)) = \sqrt{x^2 - 1 + 1}$

$g(f(x)) = \sqrt{x^2 }$

$g(f(x)) = x$

Equate f(g(x)) and g(f(x))

$f(g(x)) = g(f(x))$

$x = x$

<em>This implies that </em> $f(g(x)) = g(f(x))$ <em> at any value of x</em>

8 0

4 years ago

Bethany lives in London.

Marrrta [24]

Bethany says, Using these exchange rates, £1 is worth 1.17 euros.

<u>Step-by-step explanation</u>

1 euro = 1.07 dollars

£1 = 1.25 dollars

Now ,

⇒ £1 = 1.25 dollars

⇒ £1 = $1.25dollars(\frac{1.07}{1.07})$

⇒ £1 = $(1.07dollars)(\frac{1.25}{1.07})$

⇒ £1 = $(1euro)(\frac{1.25}{1.07})$

⇒ £1 = $(1euro)(1.17)$

⇒ £1 =1.17 euros

Therefore , Bethany says, Using these exchange rates, £1 is worth 1.17 euros.

7 0

4 years ago

The area of a garden is 30 square feet. What are two possible measurements of the perimeter for the garden?

Aleksandr [31]

Answer:

6ft and 5ft

Step-by-step explanation:

Because 6feet times 5 feet is 30 square feet

6 0

3 years ago

What is the area of this trapezoid? Please help me.

JulijaS [17]

Step-by-step explanation:

Area of a trapezoid is 1/2h(b1+b2)

So let's substitute.

1/2*17*(15+27)

1/2*17*42

Answer is 357 cm squared

4 0

3 years ago