4 years ago

Factor the expression below.

Mathematics

1 answer:

Anna35 [415]4 years ago

4 0

Answer:

The answer is (2x-1)(2x+1)

Step-by-step explanation:

4x²-1 can be factorised using difference if two squares

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Please help with 1,2, and 3

Brilliant_brown [7]

1)He should measure the perimeter.
9+5+9+5=28 inches
2) she should measure the circumference
3) He should measure the Area
8×14=112 Square feet

6 0

3 years ago

A trapezoid has an area of 95 square meters. If the bases are 7 meters and 12 meters what is the height of the trapezoid

Colt1911 [192]

ANSWER

The is 10 is meters

EXPLANATION

The area of a tra-pezoid can be calculated using the formula;

$Area= \frac{1}{2} \times (sum \: of \: bases) \times height$

We substitute the values to get,

$95= \frac{1}{2} \times (7 + 12) \times height$

$2 \times 95= 19 \times height$

$\frac{190}{19} = height$

$height = 10$

The height is 10 meters.

6 0

3 years ago

What is the average rate of change over the interval 1≤x≤3

Monica [59]

9514 1404 393

Answer:

Step-by-step explanation:

The average rate of change is the slope of the line between the points at the ends of the interval: (1, -2) and (3, 4). That is given by the slope formula ...

m = (y2 -y1)/(x2 -x1)

m = (4 -(-2))/(3 -1) = 6/2

m = 3

The average rate of change on the interval is 3.

5 0

3 years ago

At the cafeteria the ratio of pints of chocolate milk sold to pints of plain milk sold is 4 to 7. At this rate how many pints of

Mkey [24]

Answer:

175 pints

Hope this helps

4 0

3 years ago

Suppose that a population begins at a size of 100 and grows continuously at a rate of 200% per year. Give the formula for calcul

anzhelika [568]

Answer:

100 (+1) x 2^t = 100 (+2et) as we plus and we multiply before squaring the years.

Step-by-step explanation:

You can now work this out as +1 represents the 100% + 200% sum.

3 0

3 years ago