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zhenek [66]
4 years ago
5

The sum of two numbers is 70. One number is 10 more the twice the other number.

Mathematics
1 answer:
GalinKa [24]4 years ago
4 0

Answer:

20 and 50

Step-by-step explanation:

x + y = 70

y = 2x + 10

Use the substitution method:

y = 70 - x

y = 2x + 10

70 - x = 2x + 10

3x = 60

x = 20

x + y = 70

20 + y = 70

y = 50

<u>x = 20</u>

<u>y = 50</u>

<u />

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Given: 4(9b - 10) = 6b - 5(-8b - 2)<br> Prove: b = -5
Vika [28.1K]

Step-by-step explanation:

36b-40=6b+40b+10

36b-6b-40b=10+40

-10b=50

b=-50:10

b=-5

6 0
3 years ago
Your bill is $35.50. What is your total<br> after you leave a 20% tip and pay 5%<br> tax?
lys-0071 [83]
I think this is right 26.98


35.50-20%-5% =26.98

Sorry if I’m wrong
6 0
4 years ago
How do you read this expression 8(8x+7) and 8(3x)+8(7)
Misha Larkins [42]

Answer:

64x+56 & 24x+56

Step-by-step explanation:

I hope this is what you mean because this is not an equation as it is not set equal to anything.


Both problems solved by distributive property -

8*8x + (8*7) = 64x+56

8*3x + (8*7) = 24x+56

4 0
3 years ago
Describe the transformations of : f(x)=x^2 to g(x)=3(x+5)^2+2<br><br> Help!!!
Shalnov [3]

Answer:

see explanation

Step-by-step explanation:

Given f(x) then f(x + a) is a horizontal translation of f(x)

• If a > 0 then a shift to the left of a units

• If a < 0 then a shift to the right of a units

Given f(x) then f(x) + c is a vertical translation of f(x)

• If c > 0 then a vertical shift up of c units

• If c < 0 then a vertical shift down of c units

Given

g(x) = (x + 5)² + 2

This represents a shift to the left of 5 units and a shift up of 2 units

5 0
4 years ago
If you drive for 3 hour at 60 mph and then 2 hours at 70 mph, how far will you travel
Nikitich [7]
To answer this, we need to understand what mph actually means.

Driving 60 mph means is that, if we had a constant speed for one hours we would drive 60 miles. 

mph - miles per hour.

Knowing this, we can now answer the question:

3*60 (three hours for 60 miles per hour)
+
2*70 (two hours for 70 miles per hour)

180 + 140 = 320

The answer is, you would travel 320 miles.

7 0
4 years ago
Read 2 more answers
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