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3 years ago

-22+4(6x-1)+5 how do I simply by combing like terms

Mathematics

1 answer:

irinina [24]3 years ago

5 0

Answer:

24x-21

Step-by-step explanation:

First, you have to use distributive property.

-22+24x-4+5

To combine like terms, you have to notice the constants and put them together.

-21+24x

You must know that numbers with variables have to go first.

24x-21

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Simplify the product. 2n(n2 + 3n + 4)

Monica [59]

Answer:

2 n 3 + 6 n 2 + 8 n

Step-by-step explanation:

2n(n2 + 3n + 4)

Simplify :

= 2 n 3 + 6 n 2 + 8 n

7 0

4 years ago

Find the value c that will make 9x^2 +30x+c a perfect square trinomial

anzhelika [568]

Answer:

$c = 25$

Step-by-step explanation:

Given :-

A quadratic equation is given to us.
The equation is 9x² + 30x + c .

And we need to find out the value of c for which the given trinomial is a perfect square. On looking at the given expression all the terms are having positive signs before them .So we can rewrite it on the basis of ,

Identity :-

$\implies (a+b)^2=a^2+b^2+2ab$

Let's try to set the equation on this Identity .

The firsr term is 9x² . We can write it as ,

$\implies 9x^2=(3x)^2$

Hence the middle term here should contain 3 and 2 as their factors. Let's Break the middle term .

$\implies 30x = 2.3x.5$

Therefore in order to make the whole expression as perfect square 5² must be replaced by c . The expression would become ,

$\implies 9x^2+30x + 5^2 \\\\\implies (3x)^2+2.3x.5 +5^2\\\\\implies (3x+5)^2$

Hence the value of c should be 25 .

8 0

3 years ago

Read 2 more answers

Can anyone help me with these 8 answers pls ASAP

Lisa [10]

SOLUTION:

$m\angle C=63^o,AB=28,AC=29,find\text{ }m\angle B$

A simple sketch will help;

We can use the sine rule to solve for the angle B;

$\begin{gathered} \frac{28}{sin63}=\frac{29}{sinB} \\ \\ sinB=\frac{29sin63}{28} \\ \\ sinB=0.9228 \\ \\ B=67.34^o \end{gathered}$

Thus;

$m\angle B=67.34^o$

3 0

1 year ago

Teri invested $1500 in an account with an interest rate of 2.25% compounded continuously. How long will it take for Teri's accou

tester [92]

It will take 54 days for Teri's account to earn an amount of $5000.

<h3>What is compound interest?</h3>

Compound interest, also known as interest on principal and interest, is the practice of adding interest to the principal amount of a loan or deposit.

It occurs when interest is reinvested, or added to the loaned capital rather than paid out, or when the borrower is required to pay it, so that interest is generated the next period on the principal amount plus any accumulated interest. In finance and economics, compound interest is common.

It is given by formula

A = $p*e^{r*t}$