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IrinaK [193]
3 years ago
12

1.Multiply: (2m + 4)(m - 5)

Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
8 0
1. <span>2<span>m<span><span>​2^</span><span>​​</span></span></span>−6m−2<span>0
2. </span></span><span><span>b^<span><span>​3</span><span>​​</span></span></span>−2<span>b^<span><span>​2</span><span>​​</span></span></span>−24b−2<span>7
3. </span></span><span>4<span>x<span><span>​^2</span><span>​​</span></span></span>+20x+2<span>5
4. GCF: 5x^2
              </span></span><span>5<span>x<span><span>​^2</span><span>​​</span></span></span>(20+3x<span>)</span></span>
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How would you explain to solve proportions
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Answer:

Solving proportions is simply a matter of stating the ratios as fractions, setting the two fractions equal to each other, cross-multiplying, and solving the resulting equation.

Example

1)

\frac{2}{3}  =  \frac{4}{6}

2)

\frac{5}{15} =   \frac{1}{3}

7 0
2 years ago
How to do this?
Mandarinka [93]
This equation uses two properties of logarithms:

\ln(g^x) = x \ln(g)

\ln(a) + \ln(b) = \ln(ab)

So you could take the ln from left and right hand side in the equation, and get:

(2-x)ln 3 = x ln 5

then

2 ln 3 - x ln 3 - x ln 5 = 0 =>

x(ln 3 + ln 5) = 2 ln 3

so x = 2 ln 3 / (ln3 + ln5)

Now using the 1st property you can say 2 ln 3 is ln 3² = ln9
and using the 2nd property you can say ln3 + ln5 = ln15

so x= ln9 / ln15


7 0
3 years ago
Versity City Geometry 1.2 - CR (9/17)
Reil [10]

Answer:

(x+3)^{2}+(y+5)^{2}=36

Step-by-step explanation:

we know that

The equation of a circle in standard form is equal to

(x-h)^{2}+(y-k)^{2}=r^{2}

In this problem we have

(h,k)=(-3,-5)

r= 6\ units

substitute

(x+3)^{2}+(y+5)^{2}=6^{2}

(x+3)^{2}+(y+5)^{2}=36

8 0
3 years ago
A retiree invests $8,000 in a savings plan that pays 7% per year. What will the account balance be at the end of the first year?
SVETLANKA909090 [29]
7440 in end of the year..hope to be useful
5 0
4 years ago
What property of addition is illustrated in the equation below? (3x + 2) + 16 = 3x + (2 + 16)
andrey2020 [161]

Answer:

I think its the assosiative property, i'm not positive tho.

Step-by-step explanation:

3 0
3 years ago
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