3 years ago

The polygons in each pair are similar. find the missing side length

Mathematics

1 answer:

Orlov [11]3 years ago

5 0

Answer:

Can you add a picture?

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A $96.00 item is marked down by 25%<br> what is the new cost of the item?<br> round if needed

ale4655 [162]

Answer:

$72.00

Step-by-step explanation:

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3 years ago

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Use the rectangle to the right. Write your answer in simplest form.

DochEvi [55]

Answer:

perimeter: 12x-6

area: 6x-10

Step-by-step explanation:

PERIMETER:

6x-5(2)+2(2)

12x-10+4

12x-6

AREA:

6x-5•2

6x-10

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3 years ago

13. The total cost of 3 equally-priced baseball caps is $48. How

S_A_V [24]

The answer to the question is A

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3 years ago

Alex scored 98,72, and 87 on his first three math test. What must he score on the next test to have an average of at least 86 (P

ss7ja [257]

Answer:

$\huge\boxed{\text{At least an } 87\%}$

Step-by-step explanation:

In order to find what score Alex must earn to have an average of 86 on all his tests, we need to first note what the formula to find the average of a data set is.

$\displaystyle \frac{x_1+x_2+...x_n}{n}$

What the formula means is that we have to add up all the values then divide by the total number of values.

Let's represent our unknown number as $x$ .

$\displaystyle \frac{98+72+87+x}{4} \geq 86$ (since we want AT LEAST an 86).

Let's solve this inequality for x.

$\frac{98+72+87+x}{4} \cdot 4 \geq 86 \cdot 4$
$98+72+87+x \geq 344$
$257 + x \geq 344$
$257 + x - 257 \geq 344 - 257$
$x \geq 87$

So, Alex must score at least an 87% on his next quiz to have an average of 86%.

Hope this helped!

8 0

3 years ago

Find the area of each face of the cube whose volume is 729 meter square

natita [175]

Answer:

4.5

Step-by-step explanation:

$6a^2 = The surface area of cube \\\sqrt{729} = 27\\27 / 6 = 4.5$

5 0

3 years ago