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3 years ago

8

how much alcohol must be added to 480grams of hand sanitizer that is 24% alcohol to make it a hand sanitizer that is 40% alcohol

?

2 answers:

jeyben [28]3 years ago

6 0

16% more alcohol because 24+16=40 the 480grams doesn’t change

Jobisdone [24]3 years ago

6 0

Answer:

what she/he said

Step-by-step explanation:

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Which graph could represent the equation y=-x^2+4?

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J because this is a quadratic function which is shaped like a u upward

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3 years ago

What is the value of b?

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The value of b is 61°.

you solve by doing this:
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3 years ago

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The graph of a proportional relationship contains the point (8, 4).

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$\bf \qquad \qquad \textit{direct proportional variation}\\\\
\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad y=kx\impliedby 
\begin{array}{llll}
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\qquad variation
\end{array}\\\\
-------------------------------\\\\
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4 years ago

Three girls cut out decimal models of hundredths. Amber doesn't shade any of her models. Grace qualifies three fifths of a model

Varvara68 [4.7K]

Answer:

$Amber = 0$

$Grace = 0.60$

$Marsha =1.70$

Step-by-step explanation:

Given

<em>Decimal Grid = Hundredths</em>

$Amber = None$

$Grace = \frac{3}{5}th$

$Marsha = 1 + \frac{7}{10}th$

To solve for each:

We have:

For Amber:

$Amber = 0 * 100$

$Amber = 0$

For Grace:

$Grace = \frac{3}{5}th$

$Grace = \frac{3}{5} * 100$

$Grace = \frac{300}{5}$

$Grace = 60$

This means that Grace shaded 60 of the hundredth models.

Decimal shaded is:

$Grace = 60 * \frac{1}{100}$

$Grace =\frac{60}{100}$

$Grace = 0.60$

For Marsha:

$Marsha = 1 + \frac{7}{10}th$

$Marsha = \frac{10 + 7}{10}th$

$Marsha = \frac{17}{10}th$

$Marsha = 1.7th$

Multiply this by 100, to get the number of shaded

$Marsha = 1.7 * 100$

$Marsha = 170$

This means that Marsha shaded 170 of the hundredth models.

Decimal shaded is:

$Marsha = \frac{170}{100}$

$Marsha =1.70$

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3 years ago

Half the difference between two numbers is 2. The sum of the

leva [86]

Answer:

as below

Step-by-step explanation:

1st the difference is 4 b/c half of 4 = 2

and

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so check out small number that are 4 apart.. like 2 and 6

2(2)+6 =10

2(3) +7 = 13 aahh hah.. that's it

3 and 7 are the numbers being hunted :P

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3 years ago