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3 years ago

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Riley made 5 trays of cupcakes for the bake sale. Each tray had 6 vanilla cupcakes and 8 chocolate cupcakes. How many total cupc

akes did Riley make for the bake sale

1 answer:

Dmitrij [34]3 years ago

6 0

Answer:

70

Step-by-step explanation:

6x5=30

8x5=40

40+30=70

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In △XYZ , XZ=8 , YZ=5 , and XY=7 . What is the area of the triangle? Enter your answer, in simplified radical form, in the box.

andre [41]

Answer:

The area of the triangle is $10\sqrt{3}$

Step-by-step explanation:

Let us use Heron's Formula for the area of a triangle

$Area=\sqrt{p(p-a)(p-b)(p-c)}$ , where

a, b, and c are the length of the three sides of the triangle
$p=\frac{a+b+c}{2}$

In Δ XYZ

∵ XZ = 8, YZ = 5, XY = 7

- At first find p

∵ $p=\frac{XY+YZ+XZ}{2}$

∴ $p=\frac{7+5+8}{2}=\frac{20}{2}$

∴ p = 10

∵ $Area=\sqrt{p(p-XY)(p-YZ)(p-XZ)}$

- Substitute the values of p, XY, YZ, and XZ in the rule above

∴ $Area=\sqrt{10(10-7)(10-5)(10-8)}$

∴ $Area=\sqrt{10(3)(5)(2)}$

∴ $Area=\sqrt{300}$

- Simplify the root

∴ $Area=10\sqrt{3}$

The area of the triangle is $10\sqrt{3}$

7 0

3 years ago

Seven times a number is between – 28 and 28.

mart [117]

Answer:

four and negative four

Step-by-step explanation:

7*4 =28 7 *-4 = -28

3 0

2 years ago

Does anyone know the highest common factor (HCM) of 98 and 42

OLga [1]

<span>The factors of 98 are 98, 49, 14, 7, 2, 1.
The factors of 42 are 42, 21, 14, 7, 6, 3, 2, 1.<span>
The common factors of 98 and 42 are 14, 7, 2, 1,
</span><span>In the intersection numbers of 98 & factors of 42 the largest number is 14.
</span><span>So, the greatest common factor of 98 and 42 is 14.</span></span>

6 0

3 years ago

Read 2 more answers

An urn contains n balls, one of which one is special. If k of these balls are withdrawn one at a time, with each selection being

Aleksandr [31]

Using it's concept, it is found that the probability that the special ball is chosen is given by:

$p = \frac{1}{C_{n,k}}$

<h3>What is a probability?</h3>

A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.

The total number of outcomes is given by the combination of k balls from the set of n balls, given by:

$C_{n,k} = \frac{n!}{k!(n - k)!}$

One ball is special, hence the probability the special ball is chosen is given by:

$p = \frac{1}{C_{n,k}}$

More can be learned about probabilities at brainly.com/question/14398287

4 0

3 years ago

200 books; 75% decrease

Inga [223]

150 books because 200 times .25 is 150

4 0

4 years ago

Read 2 more answers