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kirza4 [7]
3 years ago
14

A school has 18 classes with 35 students in each class. In order to reduce class size to 30,how many new classes have to be form

ed?
Mathematics
2 answers:
Mekhanik [1.2K]3 years ago
5 0
1 class with 5 student
iragen [17]3 years ago
5 0
35 students × 18 classes = 630 total students
630 total students ÷ 30 (new class size) = 21

therefore, it requires 21 new classes to reduce the class size to 30.

Please give me the Brainliest!

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If segment ac has a midpoint of b, and ab=32 and bc=5x+7, what is the length of segemnt bc
Sauron [17]

Answer:

<h3>              BC = 32</h3>

Step-by-step explanation:

B being midpoint of AC means:

BC = AB = 32

3 0
3 years ago
A 5/16 inch bolt weighs 0.43 lb. How many bolts are there in a 125 lb. keg?
Gemiola [76]

Answer:

290 Bolts are There

Step-by-step explanation:

5/16 bolt Here 5/16 is size of Bolt

1 bolt Weighs  of given size weighs = 0.43 lb

Total Weight = 125 lb

Number of Bolts in Bag  = Total Weight of Bag / Weight of 1 Bolt

= 125/0.43

= 290

4 0
3 years ago
Prior to a special advertising campaign, 23% of all adults recognized a particular companyâs logo. At the close of the campaign
pochemuha

Answer:

The answer is "2.4049"

Step-by-step explanation:

Calculating the test of Hypothesis: H_{0}: 23\% \ \text{off all adults which reconize the compony's logo}\\\\H_{1}: \text{more than 23\% of adult recornise the compony's logo}\\\\

that is

H_{0}: p=0.23\ against \ H_{1}:p>0.01\\\\Z=\frac{P-p}{\sqrt{\frac{p(1-p)}{n}}}\sim N(0,1)\\\\

Given:

p= 0.23\\\\ \therefore \\\\1-p=0.77\\\\n=1200\\\\ P=\frac{311}{1200}=0.2591\\\\\therefore\\\\Z= \frac{0.2591-0.23}{\sqrt{((0.23)\times \frac{(1-0.23))}{1200}}}=2.4049

Z=2.576 tabled value. Because Z is 2.4049, that's less than Z stated, there is no indication that a null hypothesis is rejectable, which means that 23% of all adults record the logo of the Company.

8 0
3 years ago
Help i have no idea how to solve this
ASHA 777 [7]

Answer:

AB =24

Step-by-step explanation:

So, since all the sides are equal, you can just take two of the sides and set em equal to each other to find x and then, solve for AB

4x+8 =6x

8= 6x-4x

8=2x

8/2 =x

x= 4

Now, find AB, which is 4x+8

4(4) + 8

16+8 = 24

Hope this helps!

Please mark brainliest if you think I helped! Would really appreciate!

5 0
4 years ago
How many figures (line of symmetry)
soldier1979 [14.2K]
4, vertical, horizontal, and both diagonals
5 0
4 years ago
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