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3 years ago

What is the value of y?

Mathematics

1 answer:

Aleksandr [31]3 years ago

8 0

We have an isosceles triangle with one angle 54 degrees and the other angles both labeled y degrees.

Triangle angles add to 180 degrees.

54 + y + y = 180

54 + 2y = 180

2y = 180 - 54 = 126

y = 126/2 = 63 degrees

Answer: 63 degrees

Check: 63+63+54=180 good

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You estimate that there are 45 marbles in a jar. The actual amount is 82 marbles. Find the percent error. Round to the nearest t

Nataly_w [17]

Answer:

45.1

Step-by-step explanation:

The original amount is 82

But the wrong amount is 45

So we will have to calculate the percentage for the error

82-45

So %error= 37/82 ×100

=3700/82

=45.121~45.1( to nearest tenth)

So the final answer is 45.1%

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3 years ago

If you place a 89-foot ladder against the top of a 80-foot building, how many feet will

Nuetrik [128]

Answer:

$\large \boxed{\text{39 ft}}$

Step-by-step explanation:

Let x be the distance from the foot of the ladder to the base of the building.

We have a right triangle, so we can use Pythagoras' Theorem.

$\begin{array}{rcl}80^{2} + x^{2}& = & 89^{2} \\6400+ x^{2} & = & 7921\\x^{2} & = & 1521\\x & = & \sqrt{1521}\\& = &\mathbf{39}\\\end{array}\\\text{The foot of the ladder will be $\large \boxed{\textbf{39 ft}}$ from the base of the building,}$

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3 years ago

My teacher said it was rise over run but I don't understand.

Komok [63]

Here u go fren this is what rise over run means

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4 years ago

Read 2 more answers

If a home goods retailer pays $35.50 for the vacuum cleaner shown here, answer the following questions. (Round dollars to the ne

Marianna [84]

The Markup percentage is mathematically given as

M=42%

<h3>What is Mark up percentage?</h3>

The markup % may be determined by dividing the gross profit of a unit (the difference between its sales price and the amount it cost to create or buy for resale) by the amount that unit originally cost. If a product sells for $12 but only costs the corporation $8 to produce it, the markup percentage for that product is 50%, which can be calculated as (12 - 8) divided by 8.

Generally, the equation for is Total cost price mathematically given as

TCP= Pay+insurance

Therefore

TCP=35.5*1.6

TCP=284/5

Generally, the equation for is Total selling price mathematically given as

TSP=89.99+7.99

TSP=97.98

In conclusion, Mark up percentage is

$M=\frac{SP-CP}{SP}*100\\\\$

$M= \frac {97.98 - (284/5) }{97.98} *100$

M=0.4202898551*100

M=42%

Read more about Mark up a percentage

brainly.com/question/14318030

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2 years ago

Mimi bought 7 eggs from each farmer at the farmers' market. Each farmer had an equal number of eggs. Is this sample of the eggs

german

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Yes yes yes yes yes yes yes yes yes

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3 years ago