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3 years ago

Mackenzie needs to order some new supplies for the restaurant where she works. The

Mathematics

1 answer:

d1i1m1o1n [39]3 years ago

3 0

Answer:

211+12s<547 If 2 is equal to 10000

Step-by-step explanation:

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Daniel rides his bicycle 21km west and then 18km north. How far is he from his starting point?

insens350 [35]

This is a right triangle. To find the length of the hypotenuse a^2 + b^2 = c^2.

21^2 + 18^2 = c^2

441 + 324 = c^2

765 = c^2

27.66 km

6 0

4 years ago

What is 4 groups of 2/7?

zysi [14]

Is 2/7 four time

so is 2•4/7=8/7 =1 1/7

8 0

3 years ago

Read 2 more answers

What number must be added to the expression below to complete the<br> square?<br> x² - 18x

kiruha [24]

Answer:

$\boxed {\boxed {\sf 81}}$

Step-by-step explanation:

The standard form of a quadratic is:

$ax^2+bx+c$

To complete the square, the a (leading coefficient) must be 1 and there can only be terms with variables on one side.

The expression given:

$x^2-18x$

follows these rules. Next, we divide the b (linear coefficient) by 2, then square it. Basically:

$(\frac{b}{2})^2$

The b in the expression is -18.

$(\frac{-18}{2})^2$

$(-9)^2= -9*-9= 81$

This is the number that is added.

5 0

3 years ago

How do I solve n x 721= 72.1 and .074 x n = 74

erica [24]

N x 721 = 72.1
721n = 72.1 (put it in an easier format)
n = 0.1 (divide both sides by 721)

0.074 x n = 74
0.074n = 74 (put it in an easier format)
n = 1000 (divide both sides by 0.074)

4 0

3 years ago

Simplify and explain your answer 4/7+2/5(1/5+1/10)

muminat

$\frac{4}{7}+\frac{2}{5}\cdot(\frac{1}{5}+\frac{1}{10})=\frac{4}{7}+\frac{2}{5}\cdot(\frac{2}{10}+\frac{1}{10})=\frac{4}{7}+\frac{2}{5}\cdot\frac{3}{10}=\frac{4}{7}+\frac{1}{5}\cdot\frac{3}{5}\\\\=\frac{4}{7}+\frac{6}{25}=\frac{4\cdot25}{7\cdot25}+\frac{6\cdot7}{25\cdot7}=\frac{100}{175}+\frac{42}{175}=\frac{142}{175}$

6 0

4 years ago