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2 years ago

What is 98.9940 to the nearest foot ? & 42.426 to the nearest foot

Mathematics

2 answers:

mart [117]2 years ago

6 0

Answer:

98.9940 to 99

42.426 to 42

Step-by-step explanation:

To start off, 5 or more, go next door (round up), so 4 or less stays the same.

To round to the nearest foot, we know that we'll have to round the ones place. So we look at the tenths place for reference:

98.9940

We have to round the 8 using the 0.8. Because 8, as a digit, is larger than 5, we have to go next door—round up:

99.0000 = 99

Same thing for 42.426:

To round to the nearest foot, we know that we'll have to round the ones place. So we look at the tenths place for reference:

42.426

We have to round the 2 using the 0.4. Because 4, as a digit, is less than 5, we stay the same:

42.000 = 42

kkurt [141]2 years ago

3 0

Answer:

1. Round Up To 99

2. Round Down To 42

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Need help with my homework

Volgvan

Answer:

$\displaystyle y=\frac{16-9x^3}{2x^3 - 3}$

$\displaystyle y=-\frac{56}{13}$

Step-by-step explanation:

Equation Solving

We are given the equation:

$\displaystyle x=\sqrt[3]{\frac{3y+16}{2y+9}}$

To make y as a subject, we need to isolate y, that is, leaving it alone in the left side of the equation, and an expression with no y's to the right side.

We have to make it in steps like follows.

Cube both sides:

$\displaystyle x^3=\left(\sqrt[3]{\frac{3y+16}{2y+9}}\right)^3$

Simplify the radical with the cube:

$\displaystyle x^3=\frac{3y+16}{2y+9}$

Multiply by 2y+9

$\displaystyle x^3(2y+9)=\frac{3y+16}{2y+9}(2y+9)$

Simplify:

$\displaystyle x^3(2y+9)=3y+16$

Operate the parentheses:

$\displaystyle x^3(2y)+x^3(9)=3y+16$

$\displaystyle 2x^3y+9x^3=3y+16$

Subtract 3y and $9x^3$ :

$\displaystyle 2x^3y - 3y=16-9x^3$

Factor y out of the left side:

$\displaystyle y(2x^3 - 3)=16-9x^3$

Divide by $2x^3 - 3$ :

$\mathbf{\displaystyle y=\frac{16-9x^3}{2x^3 - 3}}$

ii) To find y when x=2, substitute:

$\displaystyle y=\frac{16-9\cdot 2^3}{2\cdot 2^3 - 3}$

$\displaystyle y=\frac{16-9\cdot 8}{2\cdot 8 - 3}$

$\displaystyle y=\frac{16-72}{16- 3}$

$\displaystyle y=\frac{-56}{13}$

$\mathbf{\displaystyle y=-\frac{56}{13}}$

8 0

2 years ago

George used the diagram below to help determine 30% of 60. Which expression could George have used?

VARVARA [1.3K]

Answer:

(3)(6)

Step-by-step explanation:

1st. Find the answer(60*30%=18)

2nd. Find the option that equals 18 which was (3)(6)

Basically, for all of questions that ask for a different way to express it, multiply the total amount by the percentage(or decimal/fraction) and find the other expression with the same answer.

6 0

2 years ago

Read 2 more answers

The scatter plot shows how the cooking time for a beef roast is related to its weight. Which statement is NOT supported by the t

Kisachek [45]

Answer:

the statement that is not supported by the trend in the scatter plot is d) each additional pound adds about one hour of cooking time.

7 0

3 years ago

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Please someone help me with this!

MaRussiya [10]

The sum of two numbers and their difference is 30.

6 0

2 years ago

Solve it:3/10×7/10=21/100

egoroff_w [7]

I'm gonna guess you're asking if the equation is true or false.
Well, the equation is True. 3/10 * 7/10 is 21/100, or in decimal form 0.21.
Converting 21/100 to a decimal is 0.21.
0.21 = 0.21.
21/100 = 21/100.

7 0

3 years ago