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3 years ago

The sales tax on a digital camera is $7.15. What is the sales tax rate?

1 answer:

8 0

You just have to find out the percent 7.15 is of 105. To do that, you set up a proportion with x as the percentage:

$\frac{7.15}{105}=\frac{x}{100}$

Then, cross multiply to get:

$\frac{7.15}{105}=\frac{x}{100}\\715=105x\\105x/105=715/105\\x=6.810$

So, the sales tax rate was 6.8%.

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Mary takes 50 minutes to wash an elephant and NIgel takes 40 minutes to wash an elephant. If they wash and elephant together, ho

oksano4ka [1.4K]

Answer:

25 minutes

Step-by-step explanation:

When there are to people washing one elephant they will take half the time.

So half of the longest time will be the answer to the question.

Mary takes longer then Nigel so once Nigel is finished Mary will still wash her side for 5 minutes extra.

4 0

3 years ago

How do i plot y=0.75x+0.25 on graph

gizmo_the_mogwai [7]

The slope-intercept form is
y
=
m
x
+
b
y
=
m
x
+
b
, where
m
m
is the slope and
b
b
is the y-intercept.
y
=
m
x
+
b
y
=
m
x
+
b
Find the values of
m
m
and
b
b
using the form
y
=
m
x
+
b
y
=
m
x
+
b
.
m
=
0.75
m
=
0.75
b
=
0.25
b
=
0.25
The slope of the line is the value of
m
m
, and the y-intercept is the value of
b
b
.
Slope:
0.75
0.75
Y-Intercept:
0.25

7 0

3 years ago

Read 2 more answers

Which value of m will create a system of parallel lines with no solution? y=mx-6 8x-4y=12 A coordinate grid with one line labele

nydimaria [60]

Answer:

A system of parallel lines will be created where the two lines will never meet and have no common solution at a value of m = 2

Step-by-step explanation:

The equation of the given line is 8·x - 4·y = 12

Which gives;

8·x- 12= 4·y

y = 2·x - 3

Given that the line passes through the points (0, -3) and (1, -1), we have;

$Slope, \, m =\dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}$

When (x₁, y₁) = (0. -3) and (x₂, y₂) = (1, -1), we have;

$Slope, \, m =\dfrac{(-1)-(-3)}{1-(0)} = 2$

y - (-3) = 2×(x - 0)

y = 2·x - 3 which is the equation of the given line

For the lines 8·x - 4·y = 12, which is the sane as y = 2·x - 3 and the line y = m·x - 6 to have no solution, the slope of the two lines should be equal that is m = 2

Given that the line passes through the point (1.5, 0), we have;

y - 0 = 2×(x - 1.5)

y = 2·x - 3...................(1)

For the equation, y = m·x - 6, when m = 2, we have;

y = 2·x - 6..................(2)

Solving equations (1) and (2) gives;

2·x - 3 = 2·x - 6, which gives;

2·x - 2·x= - 3 - 6

0 = 9

Therefore, a system of parallel lines will be created where the two lines will never meet and have no common solution at a value of m = 2.

4 0

3 years ago

To determine whether there is a relationship between the type of school attended and verbal reasoning scores for Irish students,

ZanzabumX [31]

Answer:

The answer is C

Step-by-step explanation:

7 0

3 years ago

Find the 60th term of the arithmetic sequence <br> −29,−49,−69,...

Mariulka [41]

Answer:

-1209

Step-by-step explanation:

Your sequence has first term a1 = -29 and common difference d = -20. Using these in the formula for the n-th term, we can find the 60 term.

an = a1 +d(n -1)

an = -29 -20(d -1)

a60 = -29 -20(60 -1) = -1209

4 0

4 years ago