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Darina [25.2K]
3 years ago
10

Can someone please please answer this and explain it? my math teacher didn’t :( will give brainliest points for explanation!!! (

Ignore work above that was for a different question)

Mathematics
1 answer:
AnnZ [28]3 years ago
8 0

Answer:

QR = 1

Step-by-step explanation:

PR = PQ + QR

PR = x + 19

PQ = 9

So now put what you know in the equation above.

PR = 9 + 2x + 19

PR also equals x + 19

so

x + 19 = 9 + 2x + 19

x + 19 = 2x + 28

19 - 28 + x = 2x

-9 + x = 2x

-9 = 2x - x

-9 = x

===================

QR = 2x + 19

QR = 2*-9 + 19

QR = -18 + 19

QR = 1

This really is kind of a nasty question. You don't expect to get a minus number of x.

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Janet drove 300 miles in 4.5 hours. Write and equation to find the rate at which she was traveling.
Kobotan [32]

If you would like to know the rate at which she was travelling, you can calculate this using the following steps:300 miles ... 4.5 hoursx miles = ? ... 1 hour300 * 1 = 4.5 * x300 = 4.5 * xx = 300 / 4.5x = 200 / 3x = 66.67 miles per hour Janet was travelling at the rate 66.67 miles per hour.


Read more on Brainly.com - brainly.com/question/1927497#readmore

7 0
3 years ago
Lowest denominator 1/15 9/5 3/8
Stels [109]
<span>LCD(<span>115</span>, <span>95</span>, <span>38</span>) = LCM(15, 5, 8) = 23×3×5 = 120</span>
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3 0
3 years ago
Read 2 more answers
A sales person at a car dealership earns A monthly salary of $2400 and $250 for each vehicle sold how many vehicles is the sales
Ivahew [28]

Answer:

Step-by-step explanation:

Let x represent the number of vehicles that the sales person sold in a month.

The sales person at the car dealership earns a monthly salary of $2400 and $250 for each vehicle sold. Let y represent the total amount he earns for selling x vehicles in a month. Therefore,

y = 250x + 2400

To determine the number of vehicles that the sales person needs to sell in a month to earn exactly $4000, we would substitute

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4000 = 250x + 2400

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He would have to sell 7 vehicles because he cannot sell 6.4 vehicles and if he sells 6 vehicles, it would be lesser than $4000

8 0
3 years ago
Fred cut an 84 centimeter rope into 2 parts and gave his sister one part. Fred's part is 56 centimetres long. His sister cut her
Vladimir79 [104]
Hi,
Since Fred's part was 56 cm, his sister's was 84-56=28
She cut it into 4 parts, so 28/4=7 cm
Her rope was 7 cm long.
Hope this helps you.
7 0
3 years ago
Pls help! I WILL MARK BRAINLIEST IF YOU ARE CORRECT
Anna11 [10]
The correct answer is C
8 0
3 years ago
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