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3 years ago

An equilateral triangle of each side 4 cm

Mathematics

2 answers:

Tamiku [17]3 years ago

7 0

Each side of the triangle is 4cm and each angle is 60 degrees

MaRussiya [10]3 years ago

5 0

Answer:

Each side of the triangle is 4cm and each angle is 60 degrees

Step-by-step explanation:

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An engineering student answered 81 questons correctly ona 90 question test. What percent of the question did she answer correctl

SIZIF [17.4K]

Answer:

correct answer = 90%

Step-by-step explanation:

Let x be the percent of the question did she answer correctly.

Given:

An engineering student answered 81 questions correctly on a 90 question test.

Find the percent of the question did she answer correctly.

Solution:

Percentage formula is given below

% answer $=\frac{correct\ answer}{total\ questions}\times 100$

% answer $=\frac{81}{90}\times 100$

% answer $=\frac{81\times 100}{90}$

% answer $=\frac{81\times 10}{9}$

% answer $=9\times 10$

% answer $=90$

correct answer = 90%

Therefore, she answered 90% correctly.

4 0

3 years ago

□+□+□=30<br> Fill in the boxes using 1,3,5,7,9,11,13,15<br> You can also repeat the number?

adelina 88 [10]

It is impossible to get the result of 30 using just odd numbers in the blanks.

Using factorials, we get 3! + 11 + 13 = 30 or 3! + 9 + 15 = 30

<em><u>Solution:</u></em>

----- + ------ + ------- = 30

We have to fill with numbers 1, 3, 5, 7, 9, 11, 13, 15 to get 30

We can also repeat the number

Given are the set odd numbers like 1, 3, 5, 7, 9, 11, 13, 15

We need three numbers to fill in the box to get 30

When three odd numbers are added, it results in odd number

But we should get 30, which is a even number

So it is impossible to get the result of 30 using just odd numbers in the blanks.

<em><u>Using tricks, some of solutions are:</u></em>

We can use factorial

3! + 9 + 15 = 6 + 9 + 15 = 30

3! + 11 + 13

So, 6 + 11 + 13 = 30

5 0

3 years ago

Solve t+m=r for r <br> pls help.

AlexFokin [52]

Hi!

<h3>So, we need to figure out what r equals. </h3>

r doesn't have to be a number. r has to equal a value. A value can be variables, or numbers, it doesn't matter.

<h3>The equation says r = t + m. Read the equation out loud. </h3>

<u>r equals t plus m. </u>

<h3>There's the value of r! </h3><h2>The answer is the problem: r = t + m</h2>

Hope this helps! :)

-Peredhel

4 0

4 years ago

Help me please what does y equal ?

kramer

Answer:

y= 5

Step-by-step explanation:

8 0

3 years ago

Jenny used her credit card to buy a refrigerator with a base cost of $824. The refrigerator consumed an average of $0.09 in elec

eimsori [14]

I think the answer is A) $1,528.47.

5 0

4 years ago

Read 2 more answers

An equilateral triangle of each side 4 cm​

An equilateral triangle of each side 4 cm