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4 years ago

Write an algebraic expression for arin has $520 and is earning 75$ each week babysitting

1 answer:

8 0

Since we know he earns $75 a week we can write
$75x
And we know he already has $520, so just add that.
+$520

So we would set up our algebraic expression like this.
$75x + $520

Good Luck! :)

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3 years ago

Students sold 275 tickets for a fundraiser at school. Some tickets are for children and cost $3, which the rest are adult ticket

stiks02 [169]

Make a system of equation
(C + A = 275)5
3C + 5A = 1,025
5C + 5A = 1,375
Subtract (elimination method)
-2C = -350, divide by -2
C = 175 children tickets
275 - 175 = 100 adult tickets
Solution: 175 children tickets and 100 adult tickets

7 0

3 years ago

An engine runs for 3.2 hours. How many seconds did it run?

andrey2020 [161]

Answer:

11520 seconds

Step-by-step explanation:

3.2 x 60= 192 minutes

192 x 60= 11520 seconds

6 0

3 years ago

In the gift shop of the History of Flight museum, Elisa bought a kit to make a model of a jet airplane. The actual plane is 27 f

LenKa [72]

The length of the wingspan of the finished model based on the dimensions of the kit is 0.75 feet

Given:

Kit

Plane = 27 feet

wingspan = 18 feet

Model:

Plane = 13.5 inches

Wingspan = x feet

convert 13.5 inches to feet

1 feet = 12 inches

13.5 inches = 1.125 feet

So,

equate Ratio of plane to wingspan

27 : 18 = 1.125 : x

27/18 = 1.125 / x

cross product

27 × x = 18 × 1.125

27x = 20.25

x = 20.25/27

x = 0.75 feet

Therefore, the length of the wingspan of the finished model based on the dimensions of the kit is 0.75 feet

Learn more about ratio:

brainly.com/question/1781657

6 0

3 years ago

Someone please help me with this question asap!

Alexeev081 [22]

Answer:

23.5 in

Step-by-step explanation:

To find the length of HJ in triangle GHJ, create three equations using the given information, then solve simultaneously.

Equation 1

HJ is two inches longer than GH:

⇒ HJ = GH + 2

Equation 2

GJ is 17 inches shorter than the sum of HJ and GH:

⇒ GJ + 17 = HJ + GH

Equation 3

The perimeter of ΔGHJ is 73 inches:

⇒ HJ + GH + GJ = 73

Substitute Equation 1 into Equation 2 and isolate GJ:

⇒ GJ + 17 = GH + 2 + GH

⇒ GJ + 17 = 2GH + 2

⇒ GJ = 2GH - 15

Substitute Equation 1 into Equation 3 and isolate GJ:

⇒ GH + 2 + GH + GJ = 73

⇒ 2GH + GJ = 71

⇒ GJ = 71 - 2GH

Equate the two equations where GJ is the subject and solve for GH:

⇒ 2GH - 15 = 71 - 2GH

⇒ 4GH = 86

⇒ GH = 21.5

Substitute the found value of GH into Equation 1 and solve for HJ:

⇒ HJ = 21.5 + 2

⇒ HJ = 23.5

7 0

2 years ago

Read 2 more answers