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Nana76 [90]
3 years ago
13

Evaluate 3a for a = 5

Mathematics
1 answer:
zhannawk [14.2K]3 years ago
7 0

Answer:

Hello There!!

Step-by-step explanation:

The answer is 15 as 3a=3×a so 3×5=15.

hope this helps,have a great day!!

~Pinky~

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It is very confusing with negatives so what do I do
Kamila [148]
A lot of people find it easier to visualize what the least to greatest would look like. So imagine a number line that starts (in the middle) at 0. All numbers to the right get GREATER and GREATER. Going for 0 to 1 to 2.... and higher. Going to the left it gets LOWER and LOWER. So, -1 to -2 to -3 and onward. Basically what I'm trying to say is the farther you are to the left the smaller you are. 

Another way you can think of it is you could remove the negative, and put them in order from least to greatest. Then when you add the negative back you would flip the order. So let's do that with our current problem: (Keep in mind that if you do this with sequences that are not all negative numbers you need to make the positive numbers negative. Or you can write out a number line and put all the numbers on it) 

Our Numbers:
-1.639, -7.06, -7.6, -0.6299, -7.0699, -7.399

Remove the Negative Temporarily: 
1.639, 7.06, 7.6, 0.6299, 7.0699, 7.399

Put the numbers in order from least to greatest:
0.6299, 1.639, 7.06, 7.0699, 7.399, 7.6 

Now add the negative sign back: 
-0.6299, -1.639, -7.06, -7.0699, -7.399, -7.6

Now reverse the order to get the correct answer: 
-7.6, -7.399, -7.0699, -7.06, -1.639, -0.6299

4 0
3 years ago
Rewrite the equation by completing the square.<br> x^2−2x−35=0
mafiozo [28]

Answer:

-5, and 7

Step-by-step explanation:

see the steps below:)

7 0
3 years ago
A rectangle has a length of 11.8 centimeters and a width of 8.2 centimeters.
kodGreya [7K]

Answer:

I think it is 96.76 cm

Step-by-step explanation:

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Scientists are studying the frog population in a pond. The function g(x)=14(1.75)x can be used to determine the number of frogs
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Answer:

A. 0.4

Step-by-step explanation:

4 0
3 years ago
What is the ratio in which the point P(3/4,5/12) decides the line segment joining points A(1/2,3/2) and B(2,-5)
timama [110]

Given:

The point P\left(\dfrac{3}{4},\dfrac{5}{12}\right) divides the line segment joining points A\left(\dfrac{1}{2},\dfrac{3}{2}\right) and B(2,-5).

To find:

The ratio in which he point P divides the segment AB.

Solution:

Section formula: If a point divides a segment in m:n, then the coordinates of that point are,

Point=\left(\dfrac{mx_2+nx_1}{m+n},\dfrac{my_2+ny_1}{m+n}\right)

Let point P divides the segment AB in m:n. Then by using the section formula, we get

\left(\dfrac{3}{4},\dfrac{5}{12}\right)=\left(\dfrac{m(2)+n(\dfrac{1}{2})}{m+n},\dfrac{m(-5)+n(\dfrac{3}{2})}{m+n}\right)

\left(\dfrac{3}{4},\dfrac{5}{12}\right)=\left(\dfrac{2m+\dfrac{n}{2}}{m+n},\dfrac{-5m+\dfrac{3n}{2}}{m+n}\right)

On comparing both sides, we get

\dfrac{3}{4}=\dfrac{2m+\dfrac{n}{2}}{m+n}

\dfrac{3}{4}(m+n)=\dfrac{4m+n}{2}

Multiply both sides by 4.

3(m+n)=2(4m+n)

3m+3n=8m+2n

3n-2n=8m-3m

n=5m

It can be written as

\dfrac{1}{5}=\dfrac{m}{n}

1:5=m:n

Therefore, the point P divides the line segment AB in 1:5.

6 0
3 years ago
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