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3 years ago

15. Multiply the following: a. (3x − 2)(2x +1)

Mathematics

2 answers:

Stolb23 [73]3 years ago

8 0

Answer:

6x^2 Plus x - 2

Doss [256]3 years ago

7 0

Answer:

Step-by-step explanation:multiply 3x first with (2x+1)

=6x²+3x

then multiply -2 with (2x+1)

= -4x-2

then add both equations

answer =6x²-x-2

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Which option below best describes the difference between an experiment and an observational study?

noname [10]

An observation study is where nothing changes and you record what is seen. An experimental study you have a control group and a testable group.

The answer would be: .C. The groups in an experiment are chosen at random, but not in an observational study.

5 0

3 years ago

cynthia invests some money in a bank which pays 5% compound interest per year. She wants it to be worth over £8000 at the end of

exis [7]

Answer:

The smallest amount is $\£6,911$

Step-by-step explanation:

we know that

The compound interest formula is equal to

$A=P(1+\frac{r}{n})^{nt}$

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest in decimal

t is Number of Time Periods

n is the number of times interest is compounded per year

in this problem we have

$t=3\ years\\ A=\£8,000\\ r=5\%=5/100=0.05\\n=1$

substitute in the formula above

$8,000=P(1+\frac{0.05}{1})^{1*3}$

solve for P

$8,000=P(1.05)^{3}$

$P=8,000/(1.05)^{3}$

$P=\£6,910.70$

Round to the nearest pound she can invest

The smallest amount is $\£6,911$

6 0

3 years ago

What's one fifth of 45

pishuonlain [190]

1 /5 = 0 . 2
45 * . 2 = 9
Hope this helped :)

3 0

3 years ago

Read 2 more answers

What are the measures of angles M and N?

romanna [79]

Answer:

mM = 113 and mN = 61

Step-by-step explanation:

In a Cyclic quadrilateral, the rule states that:

The sum opposite interior angles is equal to 180°

In the above diagram, we have cyclic quadrilateral KLMN

According to the rule stated above:

Angle K is Opposite to Angle M

So, Angle K + Angle M = 180°

Angle K = 67°

67° + Angle M = 180°

Angle M = 180° - 67°

Angle M = 113°

Angle L is Opposite to Angle N

so Angle L + Angle N = 180°

Angle L is given as = 119°

119° + Angle N = 180°

Angle N = 180° - 119°

Angle N = 61°

Therefore, Angle M = 113° and Angle N = 61°

7 0

3 years ago

In two or more complete sentences describe the process in writing the equation of a line given two points?

Alona [7]

Answer:

First, we have to find slope. We do that by using slope formula. Once we have found slope, we have start to write our equation in slope-intercept form. To get the complete equation, we need to find the y-intercept. To do so, we simply plug in one of the coordinates given to us into our half-formed equation. We should be able to find the y-intercept and then have our complete linear equation once we write it all out.

Step-by-step explanation:

Slope-Intercept Form: y = mx + b

Slope Formula: $m = \frac{y_2-y_1}{x_2-x_1}$

4 0

3 years ago