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kari74 [83]
3 years ago
8

Due to gravity, objects weigh three times as much on Earth as they do on Mercury.

Mathematics
1 answer:
SpyIntel [72]3 years ago
6 0

Answer:

If an object on Mercury weighed 25lb, it would weigh 75lb on Earth

(25 * 3 = 75)

The answer is b  

:")

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in short, you simply pick a few random "x" values, to get the "y", and that's your point, for example say x = 2, then y = -(2)² - 4 => y = -8, that gives us the point of (2, -8), and so on.


we can start off by finding the vertex, the U-turn of the graph, and then just pick a point to its left side and a point to its right side, and we can get the vertex of that by


\bf y=-4x^2-4\implies y=-4x^2+0x-4 \\\\[-0.35em] ~\dotfill\\\\ \textit{vertex of a vertical parabola, using coefficients} \\\\ y=\stackrel{\stackrel{a}{\downarrow }}{-4}x^2\stackrel{\stackrel{b}{\downarrow }}{+0}x\stackrel{\stackrel{c}{\downarrow }}{-4} \qquad \qquad \left(-\cfrac{ b}{2 a}~~~~ ,~~~~ c-\cfrac{ b^2}{4 a}\right) \\\\\\ \left(-\cfrac{0}{2(-4)}~,~-4-\cfrac{0}{4(-4)} \right)\implies (0~,~-4-0)\implies (0,-4)


and since it's a vertical parabola, the axis of symmetry comes from the x-coordinate of the vertex, namely x = 0, check the picture below.

6 0
3 years ago
Mackenzie picked 20 strawberries, 5 blueberries, and 15 raspberries. What was the ratio of the number of strawberries to the tot
Korvikt [17]

Answer:

20:40

Step-by-step explanation:

Because part of the ratio is the total number of berries, we need to add up all of the berries.

20+15+5=40

The number of strawberries picked is 20, so the ratio is 20:40

4 0
2 years ago
In a certain month a family spent $750 on food .In third month the family spent $729 on food .What was percentage decrease in th
seraphim [82]

Answer: 2.8%

Step-by-step explanation:

Give, In a certain month a family spent $750 on food

In third month the family spent $729 on food .

i.e.  Expenditure on food in a certain month = $750

Expenditure on food in third month = $729

Decrease in monthly spending on food = (Expenditure in a certain month )- (Expenditure in third month )

= $750  -  $729

= $21

Now , the percentage decrease in the month spent on food will be :

\dfrac{\text{Decrease in monthly spending on food }}{\text{Expenditure on food in a certain month}}\times100\\\\=\dfrac{21}{750}\times100\\\\=2.8\%

Hence, the percentage decrease in the month spent on food  is 2.8%.

3 0
4 years ago
Jess has dinner at a restaurant. The dinner bill is B dollars. She pays a 21% tip. Match the expressions to their correct meanin
Anastaziya [24]

It is given in the question that

Jess has dinner at a restaurant. The dinner bill is B dollars. She pays a 21% tip.

THerefore,

Jess's bill amount without tip is $ B.

Jess's tip amount is 21 % of B or 0.21B

THerefore Jess's total amount is the sum of Jess's bill amount without tip and Jess's tip amount, that is

= B+0.21 B = 1.21 B

Hence, Jess's total amount is 1.21B .

8 0
4 years ago
Rachael is on a hiking trip with her friends. After 3 hours of hiking and at 6 miles from their starting point, they decide to t
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Answer:the bottom one

Step-by-step explanation:

6 0
3 years ago
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