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3 years ago

You deposit $50 in your saving account. One week later, you withdraw $20. Write each amount as an integer.

Mathematics

1 answer:

Tju [1.3M]3 years ago

3 0

Answer:

Depositing means that you added 50$ to your account. This means that you account increased by an amount of 50.

The integer describing this is +50.

Then, withdrawing means that you took money from the account. This means that your account decreased by an amount of 20.

This can be expressed as a -20 integer.

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3 years ago

Suppose a child's mother has two dominant genes for a widows peach, but the father has no dominant genes. What is the theoretica

V125BC [204]

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4 years ago

Annabel has 25 ounces of a 20% boric acid solution which she wishes to dilute to a 10% solution. How much water does she have to

yanalaym [24]

Answer: 25 ounces

Step-by-step explanation:

The equation would be 0.2∙25+0∙x=0.1(25+x) because 20% of boric acid would be = to 0.2. water doesn't have any acid in it so it would be 0. since annabel wants a 10% solution that would mean that the total about would be 0.1 of boric acid. The ounces she needs for the 0.2 boric acid solution is 25 while the other is unknown so that would be x. when you put them together it would be 25+x. then you just multiply the ounces and the acid together and you get 0.2∙25+0∙x=0.1(25+x). when you solve it it would be x=25.

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3 years ago

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Gre4nikov [31]

Problem 3

<h3>Answer: 1/5 of a gallon per minute</h3>

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Explanation:

Two points from the graph are (10,2) and (20,4)

Apply the slope formula

m = (y2-y1)/(x2-x1)

m = (4-2)/(20-10)

m = 2/10

m = 1/5

The slope of the graph is 1/5.

Do the same for two points from the table. I'll use the first two rows

m = (y2-y1)/(x2-x1)

m = (4-2)/(10-5)

m = 2/5

The slope of the table is 2/5.

Subtract the two slopes to wrap things up:

2/5 - 1/5 = (2-1)/5 = 1/5

=====================================================

Problem 5

<h3>Answer: 23 degrees</h3>

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Explanation:

Angles 1 and 3 are same side exterior angles, so they are supplementary due to the parallel lines set up here.

(angle1)+(angle3) = 180

(157) + (angle3) = 180

angle3 = 180-157

angle3 = 23 degrees

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3 years ago