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4 years ago

13(2n−1/4)= 7/12 help please

1 answer:

8 0

Let's solve your equation step-by-step.
13(2n−14)=7/12
Step 1: Simplify both sides of the equation.
13(2n−14)=7/12
(13)(2n)+(13)(−14)=7/12(Distribute)
26n+−134=7/12
Step 2: Add 13/4 to both sides.
26n+−134+134=7/12+134
26n=236
Step 3: Divide both sides by 26.
26n/26=236/26
n=23/156
Answer:
n=23/156

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Which of the binomials below is a factor of this trinominal? x^2-13+30

Leona [35]

Answer:

$(x-3)(x-10)$

Step-by-step explanation:

To factor the equation, break it into two binomials which multiply to make the equation. To write these binomials (x+a)(x+b), find factors which multiply to 30 and add to -13 for a and b.

30: 1, 2, 3, 5, 6, 10, 15, 30

-3+-10 = -13

$x^2-13x+30 = (x-3)(x-10)$

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3 years ago

Can anyone help me with these i need them befire tomorrow

mash [69]

When you have a scale factor as percentage, is better to convert that percentage into a fraction by divide it by 100%. That way, it will be much easier to scale your figures.

1. The scale factor we need to apply to our rectangle is 60%. Firts, lets convert our scale factor into a fraction: $\frac{60}{100} = \frac{3}{5}$ . Next, we just need to multiply each side of our rectangle by our fraction:
length= $16( \frac{3}{5})=9.6$
width= $8( \frac{3}{5} )=4.8$
So, our new rectangle will have a length of 9.6 units and a width of 4.8 units.

2. This time the scale factor is 120%. Just as before, lets convert it into a fraction: $\frac{120}{100} = \frac{6}{5}$ , and just as before lets multiply each side of our triangle by our fraction:
base= $10( \frac{6}{5} )=12$
side= $8( \frac{6}{5} )=9.6$
So, our new isosceles triangle will have a base of 12 units and tow sides of length 9.6 units each.

3. This time the scale factor is 150%. Just as before, lets convert it into a fraction: $\frac{150}{100} = \frac{3}{2}$ , and just as before lets multiply each side of our polygon by our fraction:
$12( \frac{3}{2} )=18$
$15( \frac{3}{2} )=22.5$
$13( \frac{3}{2} )=19.5$
So, our new polygon will have a side of 12 length units, tow sides of 15 length units, and two side of 15 length units.

4. This time our factor is 75%. Just as before, lets convert it into a fraction: $\frac{75}{100} = \frac{3}{4}$ , and just as before lets multiply each side of our parallelogram by our fraction:
side= $25( \frac{3}{4} )=18.75$
So, our new parallelogram will have tow sides of length 18.75 units.

7 0

4 years ago

Does anyone know this?

EleoNora [17]

Answer:

The most logical answer is D

Step-by-step explanation:

6 0

3 years ago

Which expression is equivalent to (2x − 3)(x + 4) ?

sergey [27]

Answer:

Step-by-step explanation:

2x2 + 8x - 3x - 12

2x2 + 5x - 12 is equivalent to the given expression

7 0

3 years ago

Read 2 more answers

If there are 360 g of radioactive material with a half life (decreased by half or 50% )of 1 hour, how much of the radioactive ma

Lostsunrise [7]

After 1 hour, 360 g decays to 180 g.

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More quickly, with a half-life of 1 hour, the 360 g of starting material decays to

(360 g) / 2⁴ = 22.5 g

In general, if the half-life is 1 hour, then after n hours, an initial amount A of this substance decays according to

A / 2ⁿ

5 0

3 years ago