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Hunter-Best [27]
3 years ago
6

What is the value of "a"? ill give brainliest to whoever answers this question correctly

Mathematics
2 answers:
bearhunter [10]3 years ago
8 0

Answer:

14 I think

Step-by-step explanation:

DanielleElmas [232]3 years ago
7 0

Answer:

9

Step-by-step explanation:

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Marie is bringing bagels and cream cheese to school as a birthday snack for her class. The cost of b bagels and c packages of cr
emmasim [6.3K]

Answer:

$30.50

Step-by-step explanation:

b = bagels

c = cream cheese

<u>Given</u>

b = 30

c = 2

<u>Work:</u>

0.85b+2.5c

0.85(30) + 2.5(2)

25.5 + 5

30.5

4 0
3 years ago
(4200 + 75) + 5 = ( ? )+ (75+5)
Vera_Pavlovna [14]
4280 because 75+5+4200= 4280
6 0
3 years ago
There were 450 people at a play. The admission price was $2 for adults and $1 for children. The admission receipts were $680. Ho
vampirchik [111]

Answer:

Adults= 110

Children= 340

Step-by-step explanation:

Given data

let adults be x

and children be y

x+y= 450----------1

2x+y=680---------2

from 1

x= 450-y

put this in 2

2(450-y)=680

900-2y=680

900-680=2y

220=2y

y= 220/2

y= 110

x+110= 450

x= 450-110

x=340

4 0
3 years ago
The baby nursery has 2 nurses for every 10 babies. What is the nurse to baby ratio?
earnstyle [38]

Answer:

1 to 5

Step-by-step explanation:

6 0
3 years ago
A petrol kiosk p is 12 km due north of another petrol kiosk q. The bearing of a police station r from p is 135 degree and that f
tiny-mole [99]

Answer:

Distance between P and R is 40.15 km.

Step-by-step explanation:

From the picture attached,

Petrol kiosk P is 12 km due North of another petrol kiosk Q.

Bearing of a police station R is 135° from P and 120° from Q.

m∠QPR = 180° - 135° = 45°

m∠PQR = 120°

m∠PRQ = 180° - (m∠QPR +m∠PQR)

             = 180° - (45° + 120°)

             = 180° - 165°

             = 15°

Now we apply sine rule in ΔPQR to measure the distance between P and R.

\frac{\text{sin}(\angle QPR)}{\text{QR}}= \frac{\text{sin}(\angle PQR)}{\text{PR}}=\frac{\text{sin}\angle PRQ}{\text{PQ}}

\frac{\text{sin}(45)}{\text{QR}}= \frac{\text{sin}(120)}{\text{PR}}=\frac{\text{sin}(15)}{\text{12}}

\frac{\text{sin}(120)}{\text{PR}}=\frac{\text{sin}(15)}{\text{12}}

PR = \frac{12\text{sin}(120)}{\text{sin}(15)}

PR = 40.15 km

Therefore, distance between P and R is 40.15 km.

8 0
3 years ago
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