All categories

2 years ago

The sum of 9 and a number is twice a number plus 14. Write an equation.

Mathematics

1 answer:

Olin [163]2 years ago

6 0

Answer:

9+x = 2y+14

Step-by-step explanation:

It says 9 plus a number, so plug in x for 'a number', and it says 'is twice a number plus 14'. Plug in '=' for is another variable for 'a number', and last but not least, just put +14 for plus 14

You might be interested in

Concrete can be purchased by the cubic yard. How much will it cost to pour a circular slab 18 ft in diameter by 3 in. for a pati

Viefleur [7K]

So hmmm check the picture below

now

$\bf V=\pi 9^2\cdot \cfrac{1}{4}\implies V=\cfrac{81\pi }{4}
\\\\\\
\textit{there are }27ft^3\ in\ 1yd^3\textit{ thus, let's convert them to }yd^3
\\\\\\
\cfrac{\frac{81\pi }{4}}{27}\iff \cfrac{\frac{81\pi }{4}}{\frac{27}{1}}\implies \cfrac{81\pi }{4}\cdot \cfrac{1}{27}\implies \boxed{\cfrac{3\pi }{4}}$

now, that's how many yard³ are there for that slab, now, how much is the cost?

well, each yd³ costs $40, thus $\bf 40\cdot \cfrac{3\pi }{4}$

6 0

3 years ago

Please help i need this done

Ann [662]

3x - 2 = x + 1
2x = 3
x = 3/2
x = 1.5

3x - 2 = 3(1.5) - 2 = 2.5
or
x + 1 = 1.5 + 1 = 2.5

P = 4(2.5) = 10

perimeter of square is 10 cm so side of square = 2.5cm

3 0

3 years ago

Answer this please... brainliest.........

Naya [18.7K]

Answer:

Her friend is correct

Step-by-step explanation:

40 * 20% = 8

40+8=48

6 0

2 years ago

Read 2 more answers

Which of the following numbers is not between -2.6 and 1.3 on the number line?

Naya [18.7K]

Answer:

1.4

Step-by-step explanation:

-2.6---------------1.3

0.5 is between

-2.1 is between

1.4 is not between

-1.8 is between

7 0

3 years ago

Charley Davis is 1/4 as old as his father. The sum of their ages is 45. How old is each person?

Talja [164]

Answer:36 dad 9 charley

Step-by-step explanation:

8 0

3 years ago