Johnny has to buy his mother a birthday present. If he spends $90 on 5 necklaces, how much was each necklace?

Mathematics

1 answer:

NARA [144]3 years ago

8 0

Answer:

$450

Step-by-step explanation:

You might be interested in

Circle the two equations that represent the linear function graphed below.

Arlecino [84]

Answer:

poop lol

Step-by-step explanation:

3 0

3 years ago

Question 101 points)

maw [93]

Answer:

$\large\boxed{y=-\dfrac{2}{3}x+\dfrac{13}{3}}$

Step-by-step explanation:

$\text{The slope-intercept form of an equation of a line:}\\\\y=mx+b\\\\m-slope\\b-y-intercept\\\\\text{The formula of a slope:}\\\\m=\dfrac{y_2-y_1}{x_2-x_1}\\\\===============================$

$\text{We have the point:}\\\\(5,\ 1)\ \text{and}\ (-4,\ 7).\ \text{Substitute:}\\\\m=\dfrac{7-1}{-4-5}=\dfrac{6}{-9}=-\dfrac{6:3}{9:3}=-\dfrac{2}{3}\\\\\text{We have the equation in form:}\\\\y=-\dfrac{2}{3}x+b\\\\\text{Put the coordinates of the point (5, 1) to the equation:}\\\\1=-\dfrac{2}{3}(5)+b\\\\1=-\dfrac{10}{3}+b\qquad\text{add}\ \dfrac{10}{3}\ \text{to the both sides}\\\\\dfrac{3}{3}+\dfrac{10}{3}=b\to b=\dfrac{13}{3}\\\\\text{Finally:}\\\\y=-\dfrac{2}{3}x+\dfrac{13}{3}$

4 0

3 years ago

-8x+7+6=-3 Answers No solution -1 4 2

Natali5045456 [20]

Answer:

It's 2

Step-by-step explanation:

Because

-16/-8=2

7 0

3 years ago

7 less than three times the sum of a number and five

Evgen [1.6K]

Expression Form
(3-7)*n+5
n=Unknown Number

4 0

4 years ago

A person in a balloon which is 2,000 feet above the airport finds that the angle of depression to a ship out at sea is 21°. Find

maria [59]

The horizontal distance is given by the formula:
tan θ=opposite/adjacent
where:
θ=21
opposite=2000 ft
adjacent=a
thus calculating for a we get:
tan 21=2000/a
thus
a=2000/tan 21
a=5210.18 ft

Answer: 5210.18 ft

4 0

4 years ago

Read 2 more answers