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4 years ago

10

Round to the nearest ten and hundred 829

2 answers:

Marysya12 [62]4 years ago

6 0

Nearest 10th = 830
Nearest 100th = 800

Musya8 [376]4 years ago

4 0

To the nearest ten, 829 would become <em><u>830</u></em> because the ones digit (9) is closer to 30 than it is to 20. So we would round up.

To round to the nearest hundred, we look at the tens and ones digit. 29 is less than 50 so we would have to round down to <em><u>800</u></em> instead of rounding up to 900.

Hope that helps :)

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PLEASE HELP!!!!

MrMuchimi

$\displaystyle\\
\bf\\
log_{x+5} 36 = 2\\\\
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(x+5)^2 = 6^2\\\\
x+5= 6\\\\
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6 0

3 years ago

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H shows the ratio of pencils to pens sold at the school bookstore. If the bookstore sells 15 pencils, what is the ratio of penci

My name is Ann [436]

Answer:

$Ratio = \frac{3}{2}$

Step-by-step explanation:

See attachment for complete question.

We start by solving for the equation of the graph (The graph shows a linear equation)

Represent pencils with x and pen with y

From the graph, we have that:

$(x_1,y_1) = (6,4)$

$(x_2,y_2) = (12,8)$

Solve for slope (m)

$m = \frac{y_2 - y_1}{x_2 - x_1}$

$m = \frac{8 - 4}{12- 6}$

$m = \frac{4}{6}$

$m = \frac{2}{3}$

The equation is calculated using:

$y - y_1 = m(x - x_1)$

Where

$m = \frac{2}{3}$

$(x_1,y_1) = (6,4)$

$y - 4 = \frac{2}{3}(x - 6)$

$y - 4 = \frac{2}{3}x - \frac{2}{3} * 6$

$y - 4 = \frac{2}{3}x - \frac{2 * 6}{3}$

$y - 4 = \frac{2}{3}x - \frac{12}{3}$

$y - 4 = \frac{2}{3}x - 4$

Add 4 to both sides

$y - 4 +4= \frac{2}{3}x - 4 + 4$

$y= \frac{2}{3}x$

Now, to the question.

When pencils is 15 implies that

$x = 15$

Solving for x, we have:

$y= \frac{2}{3}x$

$y= \frac{2}{3} * 15$

$y= \frac{2* 15}{3}$

$y= \frac{30}{3}$

$y= 10$

i.e. Pen = 10

Ratio = x ; y

$x : y = 15 : 10$

Convert to fraction

$\frac{x}{y} = \frac{15}{10}$

Simplify

$\frac{x}{y} = \frac{3}{2}$

Hence,

$Ratio = \frac{3}{2}$

8 0

3 years ago

Read 2 more answers

I have to simplify this expression but I don't know

Karolina [17]

Answer:

Eh it's very simple

Use the laws of exponents.

$(2^{5} \times 2^{ - 3}) \div (2^{3}) ^{2}$

Then further simplify to

$2 ^{5 - 3} \div 2^{3 \times 2}$

Then it becomes

$2^{2} \div 2^{6}$

Final answer is

$2^{2} \div 2 ^{6} = 2^{ - 4}$

Heres the answer, hope it helped.

Don't forget to give thanks. :)

4 0

3 years ago

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telo118 [61]

Answer:

c.) 2 1/3

Step-by-step explanation:

i know

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3 years ago

If a and b are roots of 3x2-6+2=0then find a+b

Gennadij [26K]

Answer:

a + b = 2

Step-by-step explanation:

Given

ax² + bx + c = 0 ( equation in standard form )

Then the sum of the roots = - $\frac{b}{a}$

3x² - 6x + 2 = 0 ← is in standard form

with a = 3, b = - 6 , then

sum of roots = - $\frac{-6}{3}$ = 2

6 0

3 years ago

Read 2 more answers