All categories

2 years ago

An item is regularly priced at $35 . It is on sale for 80% off the regular price. What is the sale price?

Mathematics

1 answer:

Alexxx [7]2 years ago

6 0

First change 80% to a decimal

80% = 80/100 = 0.80

Next, multiply 35 with 0.80

35 x 0.80 = 28

Next, subtract the number gotten (28) with the regular price (35)

35 - 28 = 7

-------------------------------------------------------------------------------------------------------------------

$7 is the sales price

-------------------------------------------------------------------------------------------------------------------

hope this helps

You might be interested in

To decrease an amount by 24% what single multiplier would you use

guapka [62]

100-24=76
76%=76/100=0.76
single multiplier=0.76

5 0

3 years ago

Solve (using change of base formula) 9^(x-5)=10

Allushta [10]

X=6 1/9 is the answer

4 0

1 year ago

In Pennsylvania the average IQ score is 101.5. The variable is normally distributed, and the population standard deviation is 15

blsea [12.9K]

Answer:

We conclude that the Pennsylvania school district have an IQ higher than the average of 101.5

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 101.5

Sample mean, $\bar{x}$ = 106.4

Sample size, n = 30

Alpha, α = 0.05

Population standard deviation, σ = 15

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 101.5\\H_A: \mu > 101.5$

We use one-tailed z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{106.4 - 101.5}{\frac{15}{\sqrt{30}} } = 1.789$

Now, $z_{critical} \text{ at 0.05 level of significance } = 1.96$

Since,

$z_{stat} > z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis.

Thus, we conclude that the Pennsylvania school district have an IQ higher than the average of 101.5

5 0

2 years ago

ANSWER FAST!!

Vika [28.1K]

Answer:

y = -2/7x - 32/7

Step-by-step explanation:

The slope intercept form of a line is

y = mx+b where m is the slope and b is the y intercept

The slope is -2/7

y = -2/7 x+b

We know a point on the line is (5,-6)

Substitute this into the equation

-6 = -2/7(5) +b

-6 = -10/7+b

Add 10/7 to each side

-6 +10/7 = b

-42/7 + 10/7 = b

-32/7 = b

y = -2/7x -32/7

7 0

2 years ago

2. The duration of the ride is 15 min. (a) How many times does the last passenger who boarded the ride make a complete loop on t

nlexa [21]

Answer: 23

Step-by-step explanation:

6 0

2 years ago