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vesna_86 [32]
3 years ago
6

Pls help me....I have put a picture with the question

Mathematics
1 answer:
makkiz [27]3 years ago
5 0
For the first one, it should be 5x=50-30 which 5x=20 and x=4 so she needs to read 4 books
For the second one, it should be
(50-(7*5)/5)*7 or (50-35/5)*7= 5*7=35
Sorry if I'm wrong!
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Answer:

Step-by-step explanation:

58/8

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3 years ago
Students who attend Washington Middle School are either in seventh or eighth grade.
IgorLugansk [536]

Answer:

There are 1240 students at Washington middle school.  

Step-by-step explanation:

Percentages and Portions

We can find portions of a whole by correctly managing the percentages of each part. We know 25% of all students at Washington middle school were on the honor roll. From that portion, 60% of the students are seventh graders. That means 40% of the 25% are eight graders, i.e. 40*25%=10% were from eight grade.

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There are 1240 students at Washington middle school.  

Let's test the answer. 25% of 1240 students are on the honor roll, which is 310 students. 40% of 310 students are from 8th grade, 40%*310 = 124 as stated in the problem

3 0
3 years ago
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Alona [7]

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Step-by-step explanation:

5 0
3 years ago
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 You can find an axis of symmmetry of quadratic function by using this formula:

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An axis of f(x):

x=-\dfrac{6}{2 \cdot 1}=-\dfrac{6}{2}=-3

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x=-\dfrac{0}{2 \cdot (-1)}=\dfrac{0}{2}=0

Of h(x):

x=-\dfrac{-4}{2 \cdot 2}=\dfrac{4}{4}=1

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3 years ago
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