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Semmy [17]
2 years ago
9

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

ded 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 that apply. (100)(50) = 500 (100)(5) = 500 (130)(5) = 650 StartFraction 130 Over 100 EndFraction = StartFraction 130 Over 100 EndFraction = StartFraction 650 Over 500 EndFraction There are 650 7th graders this year.
Mathematics
2 answers:
allsm [11]2 years ago
5 0

Answer:

B,C,D,E!

Step-by-step explanation:

Pani-rosa [81]2 years ago
3 0

this answer is so u  can make that other person brainliest

Step-by-step explanation:

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Does anyone know what the vertex is?
sveticcg [70]

Answer:

A vertex (or node) of a graph is one of the objects that are connected together. The connections between the vertices are called edges or links. A graph with 10 vertices (or nodes) and 11 edges (links). For more information about graph vertices, see the network introduction.

7 0
3 years ago
The principal of a large high school wants to know if students spend more than 1 hour doing homework per night, on average. To i
MrRissso [65]

Answer:

If we define the random variable X ="time spend by the students doign homework"

And we want to tes t is students spend more than 1 hour doing homework per night, on average (alternative hypothesis), so then the system of hypothesis for this case are:

Null hypothesis: \mu \leq 1

Alternative hypothesis: \mu >1

And they wnat to use a sample size of n = 100 and a significance level of 0.05

Step-by-step explanation:

Previous concepts

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".  

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".

Solution to the problem

If we define the random variable X ="time spend by the students doign homework"

And we want to tes t is students spend more than 1 hour doing homework per night, on average (alternative hypothesis), so then the system of hypothesis for this case are:

Null hypothesis: \mu \leq 1

Alternative hypothesis: \mu >1

And they wnat to use a sample size of n = 100 and a significance level of 0.05

7 0
3 years ago
Solve for X<br> 3(x + 7) &lt; 7(x + 2)
Furkat [3]

Answer:

x > 7/4

Step-by-step explanation:

3(x + 7) < 7(x + 2)

Expand brackets:                 3x + 21 < 7x + 14

Subtract 14 from both sides:  3x +7 < 7x

Subtract 3x from both sides:         7 < 4x

Divide both sides by 4:              7/4 < x

Therefore x > 7/4

5 0
2 years ago
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Answer:

Huh...? You said free points...

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
I do not understand if anyone could help in steps or anything thank you. Solve for A -2(a + 7) = -9
Ne4ueva [31]
<h2>... Answer is in the pictures above... </h2><h3>... Hope this will help... </h3>

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