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3 years ago

38 - 8 ÷ 3 - 3 -7 + 4 + 16

Mathematics

1 answer:

Umnica [9.8K]3 years ago

7 0

Answer:

45.33333333333

Step-by-step explanation:

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Sam is a waiter at a local restaurant where he earns wages of $7 per hour.

DochEvi [55]

Answer:

$7h+5n=E$

$42+5n=E$

Step-by-step explanation:

First write an equation : note key words like "per", "each" and "total".

7 per hour

5 each

6 hours

n= number of people

E= total earnings

total earnings

So:

$7h+5n=E$

$7 per hour plus $5 tips per person equals total earnings

$7(6)+5n=E\\42+5n=E\\$

3 0

2 years ago

Select the pair of equations whose graphs are perpendicular.

viktelen [127]

$k:\ y=m_1x+b_1\ \ \ \ and\ \ \ \ l:\ y=m_2x+b_2\\ \\the\ line\k\ is\ perpendicular\ to\ the\ line\ l\ \ \ \Leftrightarrow\ \ \ m_1\cdot m_2=-1\\----------------------------\\\\A.\\2y=-3x+5\ \ \Rightarrow\ \ \ y=- \frac{3}{2} x+2.5\ \ \Rightarrow\ \ m_1=- \frac{3}{2} \\\\2x+3y=4\ \ \Rightarrow\ \ 3y=-2x+4\ \ \Rightarrow\ \ y=- \frac{2}{3}x+1 \frac{1}{3} \ \ \Rightarrow\ \ m_2=- \frac{2}{3} \\\\m_1\cdot m_2=- \frac{3}{2} \cdot (- \frac{2}{3})=1 \neq -1$

$B.\\5x-8y=9\ \ \Rightarrow\ \ -8y=-5x+9\ \ \Rightarrow\ \ \ y= \frac{5}{8} x-1 \frac{1}{8} \ \Rightarrow\ \ m_1= \frac{5}{8} \\\\12x-5y=7\ \Rightarrow\ \ -5y=-12x+7\ \ \Rightarrow\ \ y= \frac{12}{5}x-1 \frac{2}{5} \ \ \Rightarrow\ \ m_2= \frac{12}{5} \\\\m_1\cdot m_2= \frac{5}{8} \cdot \frac{12}{5}= \frac{3}{2} \neq -1$

$C.\\y=2x-7\ \ \Rightarrow\ \ m_1=2 \\\\x+2y=3\ \Rightarrow\ \ 2y=-x+3\ \ \Rightarrow\ \ y= -\frac{1}{2}x+1 \frac{1}{2}\ \ \Rightarrow\ \ m_2=- \frac{1}{2} \\\\m_1\cdot m_2= 2 \cdot (- \frac{1}{2})= -1\ \ \Rightarrow\ \ y=2x-7\ \ \ \ \perp\ \ \ \ x+2y=3$

$
D.\\x+6y=8\ \ \Rightarrow\ \ 6y=-x+8\ \ \Rightarrow\ \ \ y=- \frac{1}{6} x+1 \frac{1}{3}\ \ \Rightarrow\ \ m_1= -\frac{1}{6} \\\\y=2x-8\ \Rightarrow\ \ m_2= 2 \\\\m_1\cdot m_2= -\frac{1}{6} \cdot2=- \frac{1}{3} \neq -1$

7 0

3 years ago

A six sided number cube is tossed one time and shows the number 4. What is the experimental probability of the number cube showi

gizmo_the_mogwai [7]

A) The experimental probability is 1/1 = 1

b) The experimental probability is 2/6 = 1/3

c) The experimental probability is 4/12 = 1/3

d) The theoretical probability is 1/6

8 0

3 years ago

If Layla gets paid $948 a slow week . The employees Marco gets paid $9 an hour ,Stephanie gets paid $10.50 an hour ,and Destiny

deff fn [24]

Answer:

they all got paid 474$ all together

Step-by-step explanation:

destiny worked 12 hours and made 240.17$

Stephanie worked 12 hours and made 126.17$

Marco worked 12 hours and made 108.17$

this all adds up to 474.50$ which is exactly half of 949$

5 0

3 years ago

The U.S. Flag has 50 white stars, 6 white stripes, and 7 red stripes. What is the relationship between stars and total stripes?

Svetradugi [14.3K]

Answer:

The relationship between stars and total stripes are 50 : 13.

Step-by-step explanation:

When you add all the stripes, it equals 13. There are 50 stars so this is the answer.

8 0

2 years ago

Read 2 more answers

38 - 8 ÷ 3 - 3 -7 + 4 + 16 ​

38 - 8 ÷ 3 - 3 -7 + 4 + 16