3 years ago

Find the area of the triangle below.

Mathematics

1 answer:

Advocard [28]3 years ago

5 0

Answer:

21.78m² is the answer...

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Find the measure of the indicated angle (?). Round to the nearest tenth

Anna35 [415]

Answer:

? = 43.8°

Step-by-step explanation:

cos ? = 13/18 = 0.7222

? = 43.8°

5 0

3 years ago

Part of the proceeds from a garage sale was $455 worth of $5 bills and $20 bills. If there were 6 more $5 bills than 20$ bills f

Feliz [49]

Answer:

$\large \boxed{\text{17 \$20 bills and 23 \$5 bills}}$

Step-by-step explanation:

Let x = the number of $20 bills.

Then x + 6 = the number of $5 bills and

20x + 5(x + 6) = 455

$\begin{array}{rcl}20x + 5(x + 6) & = & 455\\20x + 5x + 30 & = & 455\\25x + 30 & = & 455\\25x & = & 425\\x & = &\dfrac{425}{25}\\\\x & = &\mathbf{17}\\\end{array}$

x = 17 = number of $20 bills

x + 6 = 17 + 6 = 23 = number of $5 bills

$\text{There were }\large \boxed{\textbf{17 \$20 bills and 23 \$5 bills}}$

Check:

$\begin{array}{rcl}20\times17+ 5(17 + 6) & = & 455\\340 + 5\times23& = & 455\\340 + 115 & = & 455\\455 & = & 455\\\end{array}$

OK.

7 0

3 years ago

11/n = 8/5 solve for n

iragen [17]

Answer:

n = 55/8

Step-by-step explanation:

You can solve it by cross multiplying. Where you multiply the denominator of the fraction on the left side with the numerator on the right side, and vice versa.

11/n = 8/5

n x 8 = 11 x 5

8n = 55

n = 55/8

(or 6.875)

3 0

3 years ago

Read 2 more answers

Simplify the expression in exponential notation.<br><br> a • a • a

vladimir2022 [97]

the answer would be a³

8 0

3 years ago

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The track team has a goal of running at least 21 miles per week during practice. The team meets for practice 4 days a week. Writ

jok3333 [9.3K]

Answer:

5.25 miles per practice

Step-by-step explanation:

you have to divide 21 by 4 and you 5.25 you can also use a calculator to solve this problem out

6 0

4 years ago