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AlladinOne [14]
2 years ago
15

The number of 7th graders attending Middle field Science Academy this year is 130% of last year’s total. If 500 7th graders atte

nded last year, how many attend this year? A tape diagram. There are 130 students who are 7th graders this year out of 100 who were 7th graders last year. There are question mark students this year out of 500 who were 7th graders last year. Which steps should be used to find 130% of 500? Check all
Mathematics
2 answers:
podryga [215]2 years ago
6 0

Answer:

B. (100)(5)=500 C.(130)(5)=650 D.130/100= 650/500 E. There are 650 7th graders this year

Step-by-step explanation:

Just took it on Egde

rodikova [14]2 years ago
6 0

Answer:

its b,c,d,e

Step-by-step explanation:

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PLEASE HELP precal!
sergij07 [2.7K]
Check the picture below

so.. .hmmm the vertex is at the origin... and we know the parabola passes through those two points... let's use either.. say hmmm 100,-50, to get the coefficient "a"

keep in mind that, the parabolic dome is vertical, thus we use the y = a(x-h)²+k  version for parabolas, which is a vertical parabola

as opposed to x = (y-k)²+h, anyway, let's find "a"

\bf y=a(x-0)^2+0\implies y=ax^2\qquad 
\begin{cases}
x=100\\
y=-50
\end{cases}\implies -50=a100^2
\\\\\\
\cfrac{-50}{100^2}=a\implies -\cfrac{1}{200}=a
\\\\\\
thus\qquad \qquad y=-\cfrac{1}{200}x^2\implies \boxed{y=-\cfrac{x^2}{200}}

now.. .your choices, show.... a constant on the end.... a constant at the end, is just a vertical shift from the parent equation, the equation we've got above.. is just the parent equation, since we used the origin as the vertex, it has a vertical shift of 0, and thus no constant, but is basically, the same parabola, the one in the choices is just a shifted version, is all.


5 0
3 years ago
A farmer sells 7.7 kilograms of apples and pears.3/5 of this weight is apples, and the rest is pears. How many kilograms of pear
kompoz [17]

Answer:

The weight of pears is 3.08 kg

Step-by-step explanation:

A farmer sells 7.7 kilograms of apples and pears.

3/5 of this weight is apples.

This means that the weight of apples is:

3/5 of 7.7

=> \frac{3}{5} * 7.7 = 4.62kg

The weight of apples is 4.62 kg.

The weight of pears will therefore be:

7.7 - 4.62 = 3.08 kg

The weight of pears is 3.08 kg.

6 0
3 years ago
The airport has a moving walkway that moves at 2 feet per second. Suppose Calvin can travel 152
Rudiy27

Answer:

0.94 ft/sec

Step-by-step explanation:

Airport: 2 feet per second.

Total distance 152 ft in the same amount of time it takes him to talk 72 feet on the pavement.

152/2 = 76 - This is how many seconds he was walking in the airport.

He walked 76 seconds and moved 152 feet.

So that means if the SAME time was used so 76 seconds he walked 72 feet, then we can do 72ft/76sec to get 0.94ft/sec

5 0
3 years ago
Can I get some help on this please:/
victus00 [196]

Answer:

C

Step-by-step explanation:

4 0
3 years ago
What measurement that is equal to 20 liters
Aliun [14]

Answer:5.28344 gallons

Step-by-step explanation: idk i just looked it up lol.

8 0
3 years ago
Read 2 more answers
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