Ask question

Ask question

All categories

3 years ago

13

The owner of a bike shop sells unicycles and bicycles and keeps inventory by counting seats and wheels. One day, she counts 15 s

eats and 22 wheels. The equation representing the total number of seats is u + b = 15 where u is the number of unicycles and b is the number of bicycles.Select the equation representing the number of wheels .
A. 2u + b = 22
B. 2u + b = 15
C. u + 2b = 22
D. u + 2b = 15

2 answers:

Sphinxa [80]3 years ago

7 0

The correct answer is c u+2b=22

Slav-nsk [51]3 years ago

4 0

The best answer is C.

u+2b=22
Unicycles have one wheel and bicycles have two, so the coefficient of 2 should go before the variable representing each bike.
It should equal 22 because 15 represents the total number of seats and not wheels.

You might be interested in

(2xy-7)/3x+8=1 solve for y

Korvikt [17]

$\frac{2xy - 7}{3x + 8} = 1$
$2xy - 7 = 3x + 8$
$2xy = 3x + 15$
$2xy - 3x = 15$
$x(2y - 3) = 15$
$2y - 3 = \frac{15}{x}$
$2y = 3 + \frac{15}{x}$
$y = 1\frac{1}{2} + \frac{15}{2x}$
$y = \frac{15}{2x} + 1\frac{1}{2}$
$y = 7\frac{1}{2}x^{-1} + 1\frac{1}{2}$

4 0

3 years ago

Simplify square roots<br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B125%7D%20" id="TexFormula1" title=" \sqrt{125} " alt=" \

9966 [12]

The square root of 125 is 15

5 0

3 years ago

Read 2 more answers

Solve the system of equations below using the substitution method. x = y + 7 / 2 4x − 2y = 8

Verdich [7]

Answer:

y = -3

x = $\frac{1}{2}$

Step-by-step explanation:

4(y + $\frac{7}{2}$ ) - 2y = 8 Distribute the 4. Multiply everything in the parentheses by 4

4y + 14 - 2y = 8 4 $(\frac{7}{2})$ = $\frac{28}{2}$ = 14 Combine the like terms 4y and -2y

2y + 14 = 8 Subtract 14 from both sides

2y = -6 Divide both sides by 2

y = -3

Plug -3 in for y in either original equation.

4x - 2y = 8

4x -2(-3) = 8

4x + 6 = 8 Subtract 6 from both sides

4x = 2 Divide both sides by 4

x = $\frac{2}{4}$ = $\frac{1}{2}$

Check:

x = y + $\frac{7}{2}$

$\frac{1}{2}$ = -3+ $\frac{7}{2}$

$\frac{1}{2}$ = $\frac{-6}{2}$ + $\frac{7}{2}$

$\frac{1}{2}$ = $\frac{1}{2}$

4x - 2y = 8

4( $\frac{1}{2}$ ) - 2(-3) = 8

2 + 6 = 8

8 = 8

3 0

1 year ago

45-45-90 triangúlese shown<br><br> Help please <br><br><br> Will give u points

lbvjy [14]

Answer:

x = 7 , y = 7 $\sqrt{2}$

Step-by-step explanation:

A 45- 45- 90 triangle is an isosceles right triangle with the 2 legs being congruent , that is

x = 7

Using Pythagoras' identity in the right triangle, then

y² = 7² + 7² = 49 + 49 = 98 ( take square root of both sides )

y = $\sqrt{98}$ = $\sqrt{49(2)}$ = $\sqrt{49}$ × $\sqrt{2}$ = 7 $\sqrt{2}$

4 0

2 years ago

Read 2 more answers

A store has clearance items that have been marked down by 30%. They are having a sale, advertising an additional 55% off clearan

Inessa [10]

15 percent of the original price

5 0

3 years ago