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4 years ago

Plz help brain fam!

Mathematics

2 answers:

rosijanka [135]4 years ago

6 0

21 x 2 = 42, 5 x 3 = 15
42/15 The area of the garden is 14/5 square meters, so it's 2 4/5 square meters.hope it helped

uranmaximum [27]4 years ago

5 0

4 1/5 * 2/3
21/5 * 2/3
42/15 = 14/5 = 2 4/5 = 2 12/15

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14. -2x = -3x + 12 - 2x 15. 8(b + 1) + 4 = 3(2b - 8)-16 Help solve if it in Oder

mojhsa [17]

14. 5x-2x=12
3x=12
X=4
15. 8b+12=6b-30
2b=42
B=21

4 0

4 years ago

What was the price of the car before the sales tax was added?

Illusion [34]

Answer:

One big reason why a car’s total price won’t match the price on its window sticker relates to fees charged by a car dealership and the automaker. For example, although a car may cost $19,995 according to the window sticker, that figure might be the price before the addition of a destination charge, which is a pricy manufacturer’s fee that can add up to $1,000 to the price. A dealer may also charge a documentation fee to prepare the vehicle’s documents for sale, and this figure can sometimes cost as much as $500. There are mandatory government fees too, such as the cost to process the car’s title work or change the registration to your name.

Step-by-step explanation:

Dealer and manufacturer fees usually aren’t the biggest add-ons to a car’s purchase price. The priciest addition typically comes in the form of taxes, since most states levy a sales tax on the entire price of a new or used vehicle. Since sales taxes can range as high as 8-10 percent in some areas, this can easily add thousands of dollars to your vehicle’s purchase price. For example, a $20,000 car purchased in an area with a 7 percent sales tax will cost an extra $1,400 on top of the purchase price, while a $30,000 car bought in a place with a 9 percent sales tax will see a whopping $2,700 price boost before you can drive it home.

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3 years ago

Show that the credit card number 4306 0912 4887 1457 is valid/invalid. Explain how you know.

elena-s [515]

Step 1a. For a card number with an even number of digits (e.g., Visa or MasterCard), double alternating digits starting with the first digit in the sequence.
Step 1b. For a card with an odd number of digits (e.g., American Express), double alternating digits starting with the second digit in the sequence.
Step 2. If the doubling resulted in a number with two digits, add them together to get a single digit number
Step 3. Now go back to the original credit number and replace the digits that you doubled with the new value — either the doubled value, or the doubled value with the digits added together — and add it all up.
Step 4. Check to see if the sum is evenly divisible by 10 (you can simply look to see whether or not it ends with a zero).
If the card number does not pass this check, then it is not a valid number. If, on the other hand, it does pass, then it may be a valid number with valid credit report.

7 0

3 years ago

Fill out each diagram to find the cost of 6 bags of popcorn when 4 bags of popcorn is $3. What is the total cost of 6 bags of po

KiRa [710]

Answer:

hope this helps

Step-by-step explanation:

A context is described, and students generate two sets of values. The purpose of this warm-up is to remind students of some characteristics that make a relationship proportional or not proportional, so that later in the lesson, they are better equipped to recognize that a relationship is not proportional and explain why.

The numbers were deliberately chosen to encourage different ways of viewing a proportional relationship. For 20 ounces and 35 ounces, students might move from row to row and think in terms of scale factors. This approach is less straightforward for 48 ounces, and some students may shift to thinking in terms of unit rates.

There are many possible rationales for choosing numbers so that size is not proportional to price. As long as the numbers are different from those in the “proportional” column, the relationship between size and price is guaranteed to be not proportional. Look for students who have a reasonable way to explain why their set of numbers is not proportional, like “the unit price is different for each size,” or “each size costs a different amount per ounce.”

Ask students to remember the last time they went to the movies. What do they know about the popcorn for sale? What sizes does it come in? About how much does it cost? Tell students that in this activity, they will come up with prices for different sizes of popcorn—one set of prices in which the price is in proportion to the size, and another set of prices in which the price is not in proportion to the size, but is still reasonable. Ask students to be ready to explain the reasons they chose the numbers they did.

Arrange students in groups of 2. Give 2 minutes of quiet work time and then invite students to share their sentences with their partner, followed by whole-class discussion.

A movie theater sells popcorn in bags of different sizes. The table shows the volume of popcorn and the price of the bag.

Complete one column of the table with prices where popcorn is priced at a constant rate. That is, the amount of popcorn is proportional to the price of the bag. Then complete the other column with realistic example prices where the amount of popcorn and price of the bag are not in proportion.

volume of popcorn (ounces) price of bag, proportional ($) price of bag, not proportional ($)

10 6 6

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3 years ago

a line with a slope of 2 passes through the point (2, 6). What is its equation in slope intercept form?

STatiana [176]

Answer:

Step-by-step explanation:

y - 6 = 2(x - 2)

y - 6 = 2x - 4

y = 2x + 2

8 0

3 years ago

Read 2 more answers