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3 years ago

3+2−16⋅9=? can you help me

Mathematics

2 answers:

wel3 years ago

7 0

-99..?? I think that’s the answer

LiRa [457]3 years ago

4 0

Answer:

-139

Step-by-step explanation:

Use Order of Operation:

1. Parentheses

2. Exponents

3. Multiplication and Division

4. Addition and Subtraction

First is parentheses but there are none so we can skip that step

Second is exponents but there are none so we can skip that step

Third is multiplication and Division which there is -16 and 9.

Multiply -16 and 9:

-144

Now the equation looks like this:

3+2-144

Since we have no other than addition and subtraction I would just solve

3+2 is 5

5-144 is

-139

Hope this helps!

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4 pencils and 3 crayons are 20.9 inches. 5 pencils and 4 crayons are 26.5 inches. Each pencil is the same length as the other pe

erastova [34]

Answer:

The length of the pencils is 4.1 inches and for the crayons 1.5 inches

Step-by-step explanation:

We can solve by means of a 2x2 system of equations, we have to:

let "x" be the length of the pencils

let "y" be the length of the crayons

4 * x + 3 * y = 20.9

5 * x + 4 * y = 26.5 => x = (26.5 - 4 * y) / 5

Replacing:

4 * (26.5 - 4 * y) / 5 + 3 * y = 20.9

21.2 - 3.2 * y + 3 * y = 20.9

-0.2 * y = 20.9 - 21.2

y = -0.3 / -0.2

y = 1.5

now for x:

x = (26.5 - 4 * 1.5) / 5

x = 4.1

This means that the length of the pencils is 4.1 inches and for the crayons 1.5 inches

5 0

3 years ago

1368⁄75 is approximately equal to what value

HACTEHA [7]

Answer:

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Step-by-step explanation:

4 0

3 years ago

Hector is dividing students into groups for an HR wants to divide the boys and girls so that each group has the same number of t

Roman55 [17]

Answer:

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Step-by-step explanation:

Let total number of groups be $x$

and total hikers in one group be $y$

if number of girls and boys in every group is same, then

$\frac{21}{x} + \frac{56}{x} = y$

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from (1) $x$ will either be 11 or 7

for $x = 11$ the values won't be real.

For $x = 7\\y = \frac{77}{7} \\y = 11$

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6 0

4 years ago

4(x - 6y)<br> please dont put stupid answers and please show some work

Lostsunrise [7]

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8 0

3 years ago

Determine the measure of each indicated angle. Show all necessary steps!

Rasek [7]

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so to find x:

360-(69+118+84)=89 degrees

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360-(100+62+106)=92 degrees

Hope it helps!

3 0

2 years ago