1 year ago

If xx and y vary directly and y is 21 when x is 7, find y when x is 5

Mathematics

2 answers:

Sedaia [141]1 year ago

6 0

Answer: y = 15

Step-by-step explanation:

8_murik_8 [283]1 year ago

3 0

Answer:

y = 15

Step-by-step explanation:

We need to solve for k

y = x

21 = 7k Divide both sides by 7 to solve for k

3 = k

y = xk

y = 5(3)

y = 15

You might be interested in

In un trapezio rettangolo la base minore, il lato obliquo e l'altezza misurano rispettivamente 60 cm. 95 cm è 76 cm. Calcola il

KengaRu [80]

Answer:

$2p=348 cm\: S=6726 cm^{2}$

Step-by-step explanation:

Ciao, come stai?

1) Per prima cosa, dobbiamo trovare la misura della base più grande. Scomponendo la figura possiamo visualizzare un triangolo e un quadrato. Ci sono somiglianze con gli angoli. Quindi è un triangolo rettangolo. Applichiamo il teorema di Pitagora:

$a^2=b^2+c^2\\95^2=b^2+76^2\\57=b$

2) Perimetro:

$2p=60+57+76+60+95\\2p=348 cm$

3) L' area

$\frac{(B+b)h}{2} =\frac{(117+60)76}{2} =6726 \:cm^{2}$

8 0

3 years ago

One evening, it snowed in several towns. The number of inches of snow the towns received are shown in the list below.

Rama09 [41]

Answer:

3/4,3/4,3/4,3/4,1,1,2,11/2,11/2,11/4,11/4

Step-by-step explanation:

we just arrange the number from the smallest to bigger

8 0

2 years ago

A small business earns a profit of $4,500 in

olchik [2.2K]

Answer:

$2750/month

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Write the times of four trains as 12 hr. clock<br> a. 14:32<br> b. 16:30<br> c. 06:45<br> d. 10:29

romanna [79]

Answer:

a 2:32

b 4:30

c 6:45

d 10:29

6 0

2 years ago

WORTH A LOT--- NEED HELP!!! AM SO CONFUSED!!!!!!!!! 5O POINTS!!!!!

erastovalidia [21]

600 x 40 I think the new dimetions will be

3 0

3 years ago