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3 years ago

HELP If 45 cookies will server 15 students. How many cookies are needed 30 students?

Mathematics

2 answers:

katrin2010 [14]3 years ago

5 0

90 cookies will be needed for 30 students

ivann1987 [24]3 years ago

4 0

If 45 cookies serve 15 students, and you need to find how many cookies will serve 30 students, simply multiply 45 by 2 which will give you 90

90 cookies serve 30 students

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Solve a triangle when A=15° B=113° and b=7?

JulsSmile [24]

Let us draw a triangle ABC with A=15° ,B=113° and b=7.

Please see the attached image.

We know that the sum of interior angles of a triangle is 180 degrees. Thus, we have

$A+B+C=180\\
\\
15+113+C= 180\\
\\
C=62^{\circ}$

Apply Sine rule in the triangle ABC, we get

$\frac{a}{\sin 15}= \frac{7}{\sin 113}\\
\\
a=\frac{7 \sin 15}{\sin 113}\\
\\
a=1.97\\
\\
\text{Again apply sine rule, we get}\\
\\
\frac{c}{\sin 62}= \frac{7}{\sin 113}\\
\\
c=\frac{7 \sin 62}{\sin 113}\\
\\
c=6.71$

Therefore, we have

$a=1.97\\
c=6.71\\
C=62^{\circ}$

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3 years ago

4^2•2^-3 = 2 1/2 -128

Kitty [74]

The answer is 2 because you multiply them both

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2 years ago

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You are taking a multiple-choice test that has eight questions. each of the questions has three answer choices, with one correct

sukhopar [10]

Alright, so there are three answers. Start with 3, and for each question you answer, you can select three more, so it's 3*3 for two questions and so on, resulting in 3^8= 6561

This is assuming you mean how many ways can you answer the test, not the question

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2 years ago

Which elevation is higher 8 feet below sea level or 13 feet below sea level

Mrac [35]

Answer: 8 feet below sea level is higher

Step-by-step explanation:

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2 years ago

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Nia has number cards for 2 3 8 9 and 5 what are the different ways Nia can arrange the cards to show only even numbers with the

PIT_PIT [208]

Answer:

23958, 23598, 25938, 25398, 29358, 29538....

Step-by-step explanation:

We have given the number cards for for 2 3 8 9 and 5. We have to find the different ways Nia can arrange the cards to show only even numbers with the 2 in the ten thousands place.

The number should be even numbers with two in the ten-thousand places.

Only 8 is left as an even number. So 8 would be at the one's place.

In the ten-thousand places, arrange the three digits 3,9 and 5 in the middle.

So there are 3*2=6 ways to arrange the middle three digits in the ten-thousand places.

23958, 23598, 25938, 25398, 29358, 29538....

5 0

2 years ago