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3 years ago

What is the coefficient and the constant in 4+x=15?

Mathematics

1 answer:

Dmitriy789 [7]3 years ago

7 0

Problem: 4+x=15
- Subtract 4 from both sides
4+x-4=15-4
- Refine
x = 11

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Delicious77 [7]

Step-by-step explanation:

3 answer.....

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2 years ago

15% off the original price of $350, plus 6% sales tax

jonny [76]

Step 1. 100-15=85
Step 2. $350 *.85=$297.50
Step 3. $297.50 * .06= $17.85
Step 4. $297.50+17.85=$315.35

Answer: $315.35

7 0

3 years ago

It has been said that newspapers are disappearing, replaced by various electronic media. In 2004, newspaper circulation (the num

shutvik [7]

Answer:

A. $y=-1.2x+59$

B. 42.2 million

Step-by-step explanation:

Part A:

Given:

Newspapers circulated in year 2004, $y_{1}=59\textrm{ million}$

Newspapers circulated in year 2014, $y_{2}=47\textrm{ million}$

Let the time $x$ start at the year 2004. So, $x_{1}=0$

For the year 2014, $x_{2}=2014-2004=10$

Therefore, linear relationship between newspapers circulated and time passed since 2004 is given as:

$y-y_{1}=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}(x-x_{1})\\y-59=\frac{47-59}{10-0}(x-0)\\y-59=-\frac{12}{10}x\\y=-1.2x+59$

Therefore, the equation describing the relationship is: $y=-1.2x+59$

Part B:

For the year 2018, $x=2018-2004=14$

Plug in 14 for $x$ in the above equation and solve for $y$ . This gives,

$y=-1.2(14)+59\\y=-16.8+59\\y=42.2$

Therefore, in the year 2018, the newspaper circulation will be 42.2 million.

8 0

3 years ago

A person throws a ball from an initial height of 48 ft and an initial upward velocity of 8 ft/sec.

antoniya [11.8K]

I believe it’s B i’m so sorry if i’m wrong!!!

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2 years ago

What is the y-intercept in the equation LaTeX: y=-3x+7y = − 3 x + 7?

poizon [28]

B answer is letter B

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3 years ago