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Vaselesa [24]
4 years ago
10

Expanding bracketss!!

Mathematics
1 answer:
saul85 [17]4 years ago
5 0

Answer:

10x²+28x+15

Step-by-step explanation:

(2x²+3)(4x+5)-8x(x²-2)=

8x³+12x+10x²+15-8x³+16x=

10x²+28x+15

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Helpppppp <br> on a timer so need ASAP
leonid [27]
It would be 4 and 6 i solved it
7 0
3 years ago
P+n=131p+3.26n=248.52
FromTheMoon [43]

Answer

Solution:

p = 79

n = 52

Step-by-step explanation:

Given equations:

A) p+n=131

B) p+3.26n=248.52

To solve for  p and n

Naming the first equation as A and second as B.

Using elimination method to solve.

In order to eliminate p we subtract equation A from B.

Subtracting A from B i.e [B-A

  (B) p+3.26n=248.52  

- (A)  p+n=131

We get,  3.26n-n=248.52-131

2.26n=117.52

Dividing both sides 2.26.

\frac{2.26n}{2.26}=\frac{117.52}{2.26}

∴ n=52

We can solve for p by substituting n=52 in equation A.

p+52=131

Subtracting both sides by 52.

p+52-52=131-52

∴ p=79

7 0
3 years ago
Compare and contrast the difference between natural numbers and integers
Flura [38]

Answer:

so natural numbers are numbers which of 1... to positive infinity

But when we talk about integers are both positive or negative numbers

either from -1 and above or +1 infinity and above

3 0
3 years ago
X²- 49=0 <br><br>what is the answer is for my exam? Thanks to the one who helps me has 10 points​
Nikitich [7]

Step-by-step explanation:

<em>x² - 49 = 0 </em>

<em>or, x² - (7²) = 0</em>

<em>or, ( x + 7 ) ( x - 7 ) = 0</em>

<em>hope</em><em> </em><em>this</em><em> </em><em>answer</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>you</em><em>. </em>

8 0
3 years ago
Read 2 more answers
A school principal asked her teachers to report the ratio of girls to students in each class. Which teacher reported the class w
MariettaO [177]

Answer:

its the third answer

Step-by-step explanation:

The third anwser is 66% which we can noow nominate any lower.

The second answer is 60% we can get rid of that.

the first is 55% we can get rid of that.

and the fourth is 62.5% so we can get rid of that.

6 0
3 years ago
Read 2 more answers
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