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2 years ago

The price of an item has dropped to $33 today.yesterday it was $110.find the percentage decrease

Mathematics

1 answer:

asambeis [7]2 years ago

3 0

Answer: 110 - 33 equals 77.

Step-by-step explanation:

Dude, just subtract- (if I get this wrong I’m sorry)

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Choose the correct transformations

sp2606 [1]

Answer:c

Step-by-step explanation:

4 0

2 years ago

What is 3/7 +1/5 and how would I get it

Aleks04 [339]

Answer:

22/35

Step-by-step explanation:

3/7 + 1/5

First, find a common denominator.

7*5=35 multiply the numerator by 5 too: 3*5=15

5*7=35 multiply the numerator by 7 too: 1*7=7

15/35 + 7/35

=22/35

Cannot be simplified.

5 0

3 years ago

Read 2 more answers

Quick Start Company makes 12-volt car batteries. After many years of product testing, the company knows that the average life of

Tanzania [10]

Answer:

17.11%

Step-by-step explanation:

since 43.2 months is the mean, and the standard deviation is 7.7 months

that means if we take the z score:

z=(36-43.2)/7.7

now that we know how many standard deviations you are away from the mean: -0.9351

using the zscore table you can find the proportion, or you can use the calculator if you have one that can do that.

you get 0.1711 which in percentages is 17.11%

7 0

2 years ago

A pizzeria charged 12 per pizza plus an addition $3.00 for delivery which equation represents the cost of having any number of p

Liula [17]

Y=12x+3

y: total cost
x: number of pizzas

3 0

3 years ago

Solve the equation: k^2+5k+13=0

mr_godi [17]

Step-by-step explanation:

k² + 5k + 13 = 0

Using the quadratic formula which is

$x = \frac{ - b \pm \sqrt{ {b}^{2} - 4ac } }{2a} \\$

From the question

a = 1 , b = 5 , c = 13

So we have

$k = \frac{ - 5 \pm \sqrt{ {5}^{2} - 4(1)(13) } }{2(1)} \\ = \frac{ - 5 \pm \sqrt{25 - 52} }{2} \\ = \frac{ - 5 \pm \sqrt{ - 27} }{2} \: \: \: \: \: \: \\ = \frac{ - 5 \pm3 \sqrt{3} \: i}{2} \: \: \: \: \: \:$

Separate the solutions

$k_1 = \frac{ - 5 + 3 \sqrt{3} \: i }{2} \: \: \: \: or \\ k_2 = \frac{ - 5 - 3 \sqrt{3} \: i}{2}$

The equation has complex roots

Separate the real and imaginary parts

We have the final answer as

$k_1 = - \frac{5}{2} + \frac{3 \sqrt{3} }{2} \: i \: \: \: \: or \\ k_2 = - \frac{5}{2} - \frac{3 \sqrt{3} }{2} \: i$

Hope this helps you

8 0

2 years ago