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stich3 [128]
3 years ago
7

Can someone help me with these 5 questions

Mathematics
1 answer:
svetlana [45]3 years ago
5 0

Answer: 1. 2x + 8

2. 11x + 9

3. -9x + 23

4. -62

5. -13x + 11

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Three students, Matthew, Thompson and Amos shared #15000 in the ratio of 5:2:x respectively. If Matthew's share is 7500, calcula
jasenka [17]

Answer:

The value of x is 3.

Step-by-step explanation:

Matthew earned 7500 of 15000, which is exactly half the total amount, meaning that the fraction corresponding to his earnings is 1/2.

Rate of 5:2:x, with number 5 corresponding to Matthew, mean that his fraction of the earnings, in function of x is given by:

\frac{5}{5 + 2 + x} = \frac{5}{7 + x}

Both fractions are equal, so:

\frac{5}{7 + x} = \frac{1}{2}

Applying cross multiplication:

7 + x = 10

x = 10 - 7

x = 3

The value of x is 3.

5 0
3 years ago
Plz show work if needed
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What is the perimeter of triangle PQR whit vertices p(-2,-3) Q(7,-3) and R(-2,-3) in the coordinate plane
rosijanka [135]

<em>PQR with vertices P(–2, 9), Q(7, –3), and R(–2, –3)</em>

<em>first distance P(–2, 9), Q(7, –3) </em>

<em>The distance (d) between two points is given by the following formula: </em>

<em>Answer= 15</em>

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HELP ME FIND SLOPE RATE CHANGE WILL GIVE BRAINLIEST
il63 [147K]

Answer:

1. RS= slope of 5/2

2. Pt= slope of -6/1 or -6

3.PQ= slope of 1/5

4. TS=slope of 0

5. QR= slope of -1/2

Step-by-step explanation:

Rise / run then simplify

5 0
3 years ago
How can 1/5x-2=1/3x+8 be set up as a system of equation
erik [133]
Hello :
<span>1/5x-2=1/3x+8
let ; y = </span><span>1/5x-2 ..... (1)
       y=1/3x+8  .....(2)
by (1) : 1/5 x =y+2
             x = 5y +10....(*)
by (2) : 1/3x = y-8
             x = 3y-24 ....(**)
(*) :5y-x = -10
(**) : 3y-x =24     ......( last answer )


</span>
4 0
4 years ago
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