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Jobisdone [24]
3 years ago
5

How do I solve the problem 7(p + 3q) Please show how you go the answer.

Mathematics
2 answers:
lions [1.4K]3 years ago
7 0
<span>I hope this helps you

7<span>(<span>p+<span>3q</span></span>)</span></span><span>=<span><span>(7)</span><span>(<span>p+<span>3q</span></span>)</span></span></span><span>=<span><span><span>(7)</span><span>(p)</span></span>+<span><span>(7)</span><span>(<span>3q</span>)</span></span></span></span><span>=<span><span>7p</span>+<span>21q</span></span></span>
MA_775_DIABLO [31]3 years ago
3 0
7(p+3q) cross multiply out, so now you have 7p+21q. This is the same thing as 7p+21q=0
Subtract 21q from both sides of the equation
7p=-21q
Divide by 7...
p=-3q
This is simplified as you can get it. 
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Twice as many students are in the chess club as in the fencing club.The number of students in the fencing club is one fifth the
jekas [21]

Answer:

28 students

Step-by-step explanation:

Let number of students in cooking club = x

Number of students in fencing club = 1/5 x

Number of students in chess club = 2(1/5)x

Since, There are 42 more students in the cooking club than in the chess club

Then ;

Number of students in chess club = Number of students in cooking club - 42

2(1/5)x = x - 42

(2/5)x - x = - 42

(2/5)x - x = - 42

-0.6x = - 42

x = 42 / 0.6

x = 70

Hence, number of students in chess club :

(2/5) * 70 = 28

4 0
3 years ago
Find the missing length using the Pythangorean Theorem and round the answer to the nearest tenth if necessary​
UNO [17]
B=6 i believe! if you use the pythagorean theorem (a^2+b^2=c^2) then you should be able to turn 8^2 and 10^2 into 64 and 100, respectively. 100-64=36 and the square root of 36 is 6. you can plug it in by calculating 8^2 + 6^2, which equals 100! hope this wasn't too confusing XD
5 0
3 years ago
How do you solve 5,6,7,8,9 and 10 on 1/10 of
weqwewe [10]

you have it right 5 is 1 you just divide it by 10 again but for #7 and 10 its 8 over 10 and 6 over 10 cause its not in the 10s yet hope i helped

7 0
4 years ago
PLEASE HELP ME!!!!!!! THIS IS TIMED SO PLEASE HELP!!!!! PLEASE, PLEASE, PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Sidana [21]

Answer:

2/29 i think

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
In a circle of diameter 30 cm a chord of 10cm is drawn. To 2 decimal places, how far is the chord from the center of the circle?
Romashka-Z-Leto [24]

<u>Given:</u>

The circle has a diameter of 30 cm and a chord of 10 cm is drawn.

Radius of the circle = 15 cm

Half of the chord = 5 cm

We need to determine the distance of chord from the center of the circle.

<u>Distance of chord from the center of the circle:</u>

Let us use the Pythagorean theorem, to find the distance between the center and the chord.

Let d denote the distance between the center and the chord of the circle.

Thus, we get;

15^2=d^2+5^2

225=d^2+25

200=d^2

Taking square root on both sides, we get;

14.14=d

Thus, the distance between the center and the chord of the circle is 14.14 cm.

Hence, Option A is the correct answer.

4 0
3 years ago
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