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Dimas [21]
3 years ago
14

Which ratio is not equivalent to 15 : 18?

Mathematics
1 answer:
Effectus [21]3 years ago
8 0
The ratio 90: 105 is not equivalent to 15: 18
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Mitchell buys a $1,400 dryer with an installment plan that requires 17% down. How much is the down payment?
Hunter-Best [27]

The amount of down payment Michelle paid for a dryer of $1,400 at 17% down payment is $238

Given:

Total cost of dryer = $1,400

down payment percentage = 17%

<em>Amount paid for down payment</em> = 17% of $1,400

= 17/100 × 1400

= 0.17 × 1400

= $238

Therefore, the amount of down payment Michelle paid for a dryer of $1,400 at 17% down payment is $238

Learn more about percentage:

brainly.com/question/2236179

7 0
2 years ago
What are 4 formulas to find the volume of a prism​
mariarad [96]
Volume=Length*Width*Height
3 0
3 years ago
What is this one i cant seem to figure it out
pshichka [43]

Answer:

73

Step-by-step explanation:

Since DA is the diameter, this means that you can divide the circle into two half-circles.  You will solve with the right half-circle.  A half-circle has a 180 total degrees.  Add up the values given and solve for x.

(2x) + (7x - 4) + (85) = 180

2x + 7x - 4 + 85 = 180

9x - 4 + 85 = 180

9x + 81 = 180

9x = 99

x = 11

Now that you have the value of x, solve for m∠CZB.

m∠CZB = 7x - 4

m∠CZB = 7(11) - 4

m∠CZB = 77 - 4

m∠CZB = 73

6 0
3 years ago
A store owner had 225 suits. At the end of a sale he had sold 4/5 of them. How many suits were left?
AleksAgata [21]
The store owner sold 4/5 of the suitces. That means 1/5 of the suitcases are left. Multiple 225 to 1/5

225* \frac{1}{5} =  \frac{225}{1}* \frac{1}{5} = \frac{225*1}{1*5} = \frac{225}{5} =45

There are 45 suitcases left
3 0
3 years ago
Read 2 more answers
A scrap metal dealer claims that the mean of his sales is "no more than $80," but an Internal Revenue Service agent believes the
Artyom0805 [142]

Answer:

There is enough not evident to support dealer's claim that his sales is no more than $80.                              

Step-by-step explanation:

We are given the following in the question:  

Population mean, μ = $80

Sample mean, \bar{x} = $91

Sample size, n = 20

Alpha, α = 0.05

Sample standard deviation, s = $21

First, we design the null and the alternate hypothesis

H_{0}: \mu \leq 80\text{ dollars}\\H_A: \mu > 80\text{ dollard}

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

Formula:

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

Putting all the values, we have

t_{stat} = \displaystyle\frac{91 - 80}{\frac{21}{\sqrt{20}} } = 2.3425

Now, t_{critical} \text{ at 0.05 level of significance, 19 degree of freedom } = 1.729

Since,                        

The calculated test statistic is greater than the critical value, we fail to accept the null hypothesis and reject it. We accept the alternate hypothesis.

Conclusion:

There is enough not evident to support dealer's claim that his sales is no more than $80.

4 0
3 years ago
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