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Nuetrik [128]
3 years ago
12

Can someone help please? I don’t understand this.

Mathematics
1 answer:
sleet_krkn [62]3 years ago
3 0

Answer:

PS = 28 units.

Step-by-step explanation:

See the attached diagram.

This is a figure of rectangle with length (3y + 3) and width 4y.

Now, the perimeter of the rectangle is 2[(3y + 3) + 4y] = 2(7y + 3)

The perimeter of the rectangle is given to be 104 units.

So, 2(7y + 3) = 104

⇒ 7y + 3 = 52

⇒ 7y = 49

⇒ y = 7

Therefore, PS = 4y = 4(7) = 28 units. (Answer)

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Henry was able to help 4 out of 9 of students that requested help in the math lab and Michelle helped 45% of the total students
WARRIOR [948]
For Henry: 4 out of 9 is equal to 4 divided by 9. That gives you approximately 0.444. Multiply that by 100 to get the percentage and you get 44.4%.

Henry: 44.4%
Michelle 45%

MICHELLE HELPED MORE STUDENTS
4 0
3 years ago
Jim, Dan and David share some sweets in the ratio 3:1:5. Jim gets 21 sweets. How many more sweets does David get over Dan?
nadezda [96]

Answer:

David gets 28 more than Dan

Step-by-step explanation:

Jim: Dan : David: total

3   :    1    :  5       : 3+1+5 = 9

Jim gets 21

21/3 = 7

Multiply each number by 7

Jim: Dan : David: total

3*7 :  1*7  :  5 *7  :  9*7

21  :   7     :  35   :  63

David has 35 and Dan has 7

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David gets 28 more than Dan

8 0
4 years ago
ABC is an isosceles triangle in which AC =BC.
aev [14]

Given:

ABC is an isosceles triangle in which AC =BC.

D and E are points on BC and AC such that CE=CD.

To prove:

Triangle ACD and BCE are congruent​.

Solution:

In triangle ACD and BCE,

AC=BC                  (Given)

AC\cong BC

\angle C\cong m\angle C                  (Common angle)

CD=CE                  (Given)

CD\cong CE

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\Delta ACD\cong \Delta BCE           (SAS congruence postulate)

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3 0
3 years ago
Read 2 more answers
There are a total of 64 students in a drama club and a yearbook club. The drama club has 14 more students than the yearbook club
yawa3891 [41]
Answer:

39 students in the drama club, 25 in the yearbook club.

Explanation:

X=number of students in the drama club
Y=number of students in the yearbook club

X+Y=64
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X−X+Y+14=64−Y
Y+14=64−Y
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Y+Y+14−14=64−14−Y+Y
2Y=50
Divide by 2
Y=25
X+25=64
Subract 25
X=64−25
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8 0
3 years ago
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Answer:

a) 7 members,

b) 3.

c)  4.

Step-by-step explanation:

I hope the following will help you understand what this diagram means:-

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