Donut $2.50 Cupcake $4.25 Ice cream $3.80 I need help finding the equation

Mathematics

1 answer:

kati45 [8]3 years ago

5 0

The answer is 10.55 l hope this helps

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What is the value of x?

Eduardwww [97]

Answer: 15

Step-by-step explanation:

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The x in the equation is 15

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3 years ago

In Joe's fish tank, there are 5 goldfish and 9 snails. How does the ratio 9:14 describe Joe's fish tank?

Natalija [7]

The answer is C, number of snails to the total number of animals

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3. Find the measure of the angle given.

yuradex [85]

Answer:

Step-by-step explanation:

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3 years ago

Keiko has seven colors of lanyard. She uses three different colors to make a keychain. How many different combinations can she c

AleksAgata [21]

Combination = doesn't matter what order
Permutation = order matters

There are <u>two</u> methods to work out combinations.

Method 1 List out possibilities
123 124 125 126 127 134 135 136 137 145 146 147 156 157 167
234 235 236 237 245 246 247 256 257 267
345 346 347 356 357 367
456 457 467
567

For a total of 35 combinations.

Method 2 Use a formula.
It's a rather complicated one, so only use it if you have a lot of possibilities.

$\frac{n!}{r!(n-r)!} = \frac{7!}{3!(7-3)!} = \frac{7!}{3!*4!} = \frac{7*6*5*4*3*2*1}{3*2*1*4*3*2*1} = \frac{7*6*5}{3*2*1}=\frac{210}6=35$

(n is the number of choices, r is the amount you choose, and ! is a function that multiplies together all numbers down to 1)

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4 years ago

trent, pam, and linda will work together to paint a poster that is 4 feet long Each student will paint an equal length of the po

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The whole length of the poster is 4 feet. There are three people who will paint an equal length, so this means that we need to divide the 4 feet of the poster between 3 people.

4 ÷ 3 <span>≈ 1.3

Each student will paint 1.3 feet, or 1 foot and 4 inches of the poster.</span>

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4 years ago