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3 years ago

7th grade work ! I’ll give brainliest!

Mathematics

1 answer:

marysya [2.9K]3 years ago

3 0

Answer:

Step-by-step explanation:

-418 + 387 - 94 - 132

-31 - 94 - 132

-125 - 132= -257 feet

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Julia makes friendship bracelets. She was recently given nine bracelets from different people. At Christmas, she plans to give a

sergey [27]

Answer:

The number of bracelets with she start are 48.

Step-by-step explanation:

Given:

Julia was recently given 9 bracelets. She plans to give 1/3 of her bracelets. She will be left with 23.

Now, we need to find with how many did she start.

Let the bracelets with she start be $x$ .

She plans to give $\frac{1}{3}ofx$ = $\frac{x}{3}$ .

According to question:

$x-9-\frac{x}{3}=23$

On solving the equation:

$\frac{3x-27-x}{3} =23$

<em>Multiplying both sides by 3 we get:</em>

$3x-27-x=69$

$2x-27=69$

<em>Adding both sides by 27 and then dividing by 2 we get:</em>

$x=48$

Therefore, the number of bracelets with she start are 48.

6 0

3 years ago

How many oz of nuts are there in a box that holds 3.2 pounds

melisa1 [442]

Answer:

51.2 oz

Step-by-step explanation:

Stoichiometry

3.2 lb x 16 oz

÷ 1 lb =51.2 oz

3 0

3 years ago

in a proportional relationship the ratio y/x is constant. Show that this ratio is not constant for the equation y=a-14

Colt1911 [192]

To show that the ratio $\frac{y}{x}$ is not constant for the function $y=a-14$ we only need to evaluate this function at 2 points and then show that the ratio is not the same for those two points. Note that here $a$ represents $x$ .

To find the counter examples here, I will use the values $a=20$ and $a=28$ . For $a = 20$ , the equation tells us that the output is

$y=20-14=6$ . For this value of $a$ the point is point is $(20,6)$ . The ratio $\frac{y}{x} =\frac{6}{20}$ . For the $a=28$ , $y=28-14=14$ . For this value of $a$ the point is $(28,14)$ . The ratio $\frac{y}{x} =\frac{14}{28} =\frac{1}{2}$ . Clearly this ratio is not constant for all ordered pairs.