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Semmy [17]
3 years ago
7

I need help. i don’t understand this question .

Mathematics
1 answer:
user100 [1]3 years ago
6 0

So the question is asking to solve for y

You know RS=7y-4

You know ST=y+5

You know RT=28

RS+ST=RT as shown in the diagram, This means that you can use that equation and replace RS,ST, and RT with what you know they are equal too. So you end up with the equation:

(7y-4)+(y+5)=28, Now you have to solve for y

7y-4+y+5=28

8y+1=28

8y=27

y=3.375

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Which organism is a consumer?<br> Oak tree<br> Rosebush<br> Prairie dog<br> Tomato plant
BlackZzzverrR [31]

Answer:

prairie dog

Step-by-step explanation:

because this eats the other organisims

7 0
2 years ago
Suppose a basketball player has made 291 out of 389 free throws. If the player makes the next 2 free throws, I will pay you $38.
VMariaS [17]

Answer:

The expected value of the proposition is -$0.76.

Step-by-step explanation:

It is provided that a basketball player has made 291 out of 389 free throws.

Then rate of him making a free throw is,

P(\text{free throw})=\frac{291}{389}=0.7481

The probability that he makes the next 2 free throws is:

P(\text{Next 2 free throws})=(0.7481)^{2}=0.5596

The payout rules are:

  • If the player makes the next 2 free throws, I will pay you $38.
  • Otherwise you pay me $50.

Compute the expected value of the proposition as follows:

Expected value = $38 × P (Makes both) + (-$50) × P (Misses both)

                          =($38\times 0.5596)+(-$50\times (1-0.5596))\\=21.2648-22.02\\=-0.7552\\\approx -$0.76

Thus, the expected value of the proposition is -$0.76.

5 0
3 years ago
Richard mows 1/3 of his yard in 1/2 hour. How much of his yard would Richard mow in 1 hour?
Vlada [557]
I hope this helps you




if he mows 1/3 yard in 1/2 hour


? yard in 1 hour



?.1/2=1.1/3


?=2/3 yard in 1 hour
3 0
3 years ago
Read 2 more answers
E
NeTakaya

Answer:

$45 after the discount

Step-by-step explanation:

Set up a proportion.

     \frac{x}{50} = \frac{10}{100}      $50 is the total amount and make the 10% a decimal

x(100) = 50(10)

100 = 500

100 ÷ 500

x = 5     <-- We have to subtract this amount from the total

$50 - $5 = $45 <-- total after the discount

<u>Hope this helps!!</u>

4 0
3 years ago
Read 2 more answers
a sporting goods store has 39 bicycles. if 2/3 of this quantity are sold how many bicycles were sold? please show work
horrorfan [7]

Answer:

26

Step-by-step explanation:

GIRL 2/3's

2/3*39

2/3*39/1= 78/3 ( DIVIDE ) =26

2/3's of 39  =26

7 0
3 years ago
Read 2 more answers
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