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Sonja [21]
3 years ago
9

Simplify the following: 8h – 4g + 5g + 2h

Mathematics
1 answer:
Talja [164]3 years ago
5 0

8h - 4g + 5g + 2h \\  \\ (8h + 2h) -(4g - 5g) \\  \\ 10h - ( - g) \\  \\ 10h + g
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What is the change in value of the 5 digit in these two numbers? 658 201 and 675 201
Rashid [163]
The change in value of the 5th digit is, 2.

50,000 to 70,000. Which is an addition of 20,000
3 0
3 years ago
Please help me with 2 and 3 and use the elimination process!
grandymaker [24]

Answer:

2. Judy =$5

Ben= $4

Step-by-step explanation:

2. Let Judy =  x  and Ben =  y

8x + 10y = 80

9x + 5y = 65

Solve these simultaneous equations.

8 x  +  10 y  =  80

18 x  +  10 y  =  130

Take the second equation away from the first equation

− 10 x  =  − 50

x  =  5

This means that Judy gets paid $5 an hour.

Therefore, Ben gets paid $4 an hour.

Answer:

3. 24 quarters and 16 dimes

Step-by-step explanation:

3. Let the number of dimes = x and the number of quarters = y

                                    Value      Value

Type        Number       of             of

of             of                EACH      ALL

coin         coins            coin        coins

-------------------------------------------

dimes         x              $0.10       $0.10x

quarters      y             $0.25      $0.25y

-------------------------------------------

TOTALS    40                            $7.60

x + y = 40

0.10x + 0.25y = 7.60

Get rid of decimals by multiplying every term by 100:

10x + 25y = 760

So we have the system of equations:

x + y = 40

10x + 25y = 760

         

We solve by substitution.  Solve the first equation for y:

x + y = 40

y = 40 - x

Substitute (40 - x) for y in 10x + 25y = 760

      10x + 25(40 - x) = 760

      10x + 1000 - 25x = 760

           -15x + 1000 = 760

                  -15x = -240

                       x = 16 = the number of dimes.

Substitute in y = 40 - x

                     y = 40 - (16)

                     y = 24 quarters.

$1.60 + $6.00 = $7.60

I hope that helped, sorry for taking so long :-)

8 0
3 years ago
What is the equation of the line parallel to x = 7, passing through the point (-4, 1)? A. X = -4 B. X = 1 C. Y = -4 D. Y = 1
77julia77 [94]

Answer:

x=-4

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Please help me I need it right now
Nana76 [90]

Answer:

X+y=180, Y=Z, X+Z=180

Step-by-step explanation:

Hope this helps. i remember doing this.

6 0
3 years ago
Two researchers are studying the decline of orangutan populations. In one study, a population of 784 orangutans is expected to d
zhuklara [117]
Step 1:
Set Variables (We will use x & y)

x = years
y = total orangutan population

Step 2:
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Step 3:
Set equations equal to each other & solve

784 - 25x = 817 - 36x
784 = 817 - 11x
-33 = -11x
3 years = x
5 0
3 years ago
Read 2 more answers
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