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Harrizon [31]
3 years ago
12

Simplify the expression: 3(x+2) - 4 - 7x

Mathematics
1 answer:
belka [17]3 years ago
6 0

Answer:

use PEMDAS

Step-by-step explanation:

Parentheses

Exponents

Multiply

Divide

Add

Subtract.

if you do it in that exact order you should get your answer.

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A truck uses 1 tablespoon of gasoline to drive 125 yards. How many miles can the vehicle travel per gallon?
Alborosie

Answer:

18.18 miles.

Step-by-step explanation:

A truck uses 1 tablespoon of gasoline to drive 125 yards.

Now, 1 gallon of gasoline contains 256 tablespoons of gasoline.

So, the truck uses 1 gallon i.e. 256 tablespoons of gasoline to drive (256 × 125) = 32000 yards.

Now, 1-mile distance contains 1760 yards.

Therefore, the truck uses 1 gallon of gasoline to drive \frac{32000}{1760} = 18.18 miles. (Answer)  

8 0
4 years ago
Solve it step by step
tino4ka555 [31]

The interior angles of any triangle sum to 180°, so

(12<em>x</em> + 2) + 26<em>x</em> + (6<em>x</em> + 2) = 180

44<em>x</em> + 4 = 180

44<em>x</em> = 176

<em>x</em> = 176/44 = 4

7 0
3 years ago
Pythagoras Theorem and Quadratic Equations<br> Solve for x:<br> a= (x-2)<br> b= 9<br> c= (x+1)
Alex_Xolod [135]

Answer:

Step-by-step explanation:

Pythagoras theorem

a^2=b^2+c^2

(x-2)^2=9^2+(x+1)^2

x^2-4x+4=81+x^2+2x+1

Collect like terms

-4x-2x=82-4

-6x=78

x=-13

3 0
3 years ago
Read 2 more answers
I need help on this please help
Liula [17]

Answer:

I'm pretty sure the answer is B

Step-by-step explanation:

8 0
3 years ago
How can i write an equation of the linethat passes through (-3,0) and (0,1)
nikklg [1K]
Use the slope formula. after you find the slope put it in slope intercept form.

slope formula is \frac{y2-y1}{x2-x1} (-3x1,0y1) (0x2,1y2)

Slope intercept form is y=mx+b m=slope b=y intercept
6 0
3 years ago
Read 2 more answers
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