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ICE Princess25 [194]
3 years ago
5

Solve each quadratic equation. Show your work. 14. (2x – 1)(x + 7) = 0

Mathematics
2 answers:
melisa1 [442]3 years ago
5 0
<span>(2x – 1)(x + 7) = 0

2x-1=0
2x=1
x=1/2
x=0.5

x+7=0
x= -7
</span>
ahrayia [7]3 years ago
5 0
Solve your equation step-by-step.

(2x−1)(x+7)=0

Simplify both sides of the equation.

2x2+13x−7=0

Factor left side of equation.

(2x−1)(x+7)=0

Set factors equal to 0.

2x−1=0 or x+7=0

x=1/2 or x=−7

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Oliver planted four strawberry plants in his home garden. By the end of the first summer, all four plants each produced and deve
sattari [20]

Answer:

128

Step-by-step explanation:

4 x 2 = 8

8 x 2 = 16

16 x 2 = 32

32 x 2 = 64

64 x 2 = 128

By the 5th summer he would have 128 plants. n = p x 2

n = plants at the end of summer

p = plants at beginning of summer

6 0
3 years ago
A sum of money is deposited in a bank which offers a simple interest rate of 0.325% per annum. At
frosja888 [35]

Answer:

50.000

Step-by-step explanation:

the formula to get ther is the following:

X + ( X * \frac{0.325}{100} * 4 ) = 50.650

X is the initial amount of money you need to find

4 are the years of interests

So, If you have interests, it means that some money will be added to yours. But how much?

The problem says that every year 0.325% of your initial amount will be added, so you will calculate that amount( X * \frac{0.325}{100}) and you multiply it by four.

All this added to your initial amount will be the final number you have 50.560

6 0
3 years ago
The length of a rectangle is three more than twice the width. The perimeter is 96. What are the dimensions? ​
SIZIF [17.4K]

Answer:

Width =15

Length =33

Step-by-step explanation:

Take width as x

And length as 2x+3

Perimeter as 96

Formula of the perimeter of a rectangle is 2l+2w

X+×+2×+3+2×+3=96

6x+6=96

6x=96-6

6×=90

X=15

Width =x and x =15 so width =15 while length =33

7 0
4 years ago
Find the radius of the button.<br><br> A circular button with a diameter of 5 centimeters.
Margarita [4]

Answer:

r = 2.5 cm

Step-by-step explanation:

The radius is 1/2 of the diameter

r = 1/2 (d)

r = 1/2 (5)

r = 2.5 cm

4 0
3 years ago
ngozi earns \$24{,}000$24,000dollar sign, 24, comma, 000 in salary in the first year she works as an interpreter. each year, she
goblinko [34]

The function that Ngozi's salary s(t) in dollars, t years after she starts to work as an interpreter is given by S = 24000 *  (1.035)^t.

What is a function?

  • A function in mathematics from a set X(ax) to a set Y allocates exactly one element of Y to each element of X(ax).
  • A relation between a collection of inputs and labor is known as a function.

You can use the fact that the raise is done on the previous year's salary.

Let the initial salary be P = $24000

After 1 year, her salary increased by R = 3.5% which, thus,

Total salary = P + increment

Similarly going on, we get

P_t = P(1+ \frac{R}{100})^t = S (we can say)

Putting values of P(value of P) and R(value of R), we get

S = 24000(1 + 0.035)^t = 24000 *(1.035)^t

Thus,

The function that Ngozi's salary s(t) in dollars, t years after she starts to work as an interpreter is given by

S = 24000 *  (1.035)^t

Learn more about function here:

brainly.com/question/25638609

#SPJ4

8 0
2 years ago
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