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evablogger [386]
3 years ago
6

Matilda needs at least 112$ to buy a new dress . She has already saved $40 . She earns $9 an hour babysitting .write and solve a

n inequality to find how many hours she will need o babysit to buy the dress .
Mathematics
2 answers:
WITCHER [35]3 years ago
7 0
(112-40)/9=8 is the answer-er-er-er
frutty [35]3 years ago
4 0
112 is what it should be set less than or equal to because she needs at least this much money for the dress. So 112 should be equal to or less than the amount she earns total. 112≤? On the other side you need to put 40 because this is what she already has. You need to add 40 to 9x, x being the amount of hours she works. so your inequality is 112 ≤ 9x +40. 
From there subtract 40 on both sides and then divide by 9. Your answer should be 8 hours.
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Does each function describe exponential growth or decay?
Aleksandr [31]
<h3>Answer: Only first two are exponential growth function and last three functions are exponential decay functions.</h3>

Step-by-step explanation: We need to describe exponential growth or decay for the given functions.

The standard exponential function equation is

y=a(b)^x.

Where a is the initial value and b is the growth factor.

Note: If value of b > 1, it would be an exponential growth and if b < 1, it would be an exponential decay.

Let us check them one by one.

y=(1.008^{1/12}})^{12t} => y=(1.008^})^{1/12\times{12t} }

=> y= (1.008)^t.

Value of b is 1.008 > 1, therefor it's an exponential growth function.

y=250(1+0.004)^t, also have b>1 therefor it's an exponential growth function.

All other functions has b values less than 1, therefore only first two are exponential growth function and last three functions are exponential decay functions.



5 0
3 years ago
What is the value of the exponential expression 24?<br> O A. 8<br> B. 32<br> O C. 64<br> O D. 16
adelina 88 [10]

Answer:

16

Step-by-step explanation:

2^4 is the same thing as 2*2*2*2*2. 2 times 2 is 4, times 2 is 8, times 2 again is 16.

4 0
2 years ago
TRUE or FALSE: In the quarter circle, the radius is 4 cm and the diameter is 8 cm.
viktelen [127]

Answer: False.

Step-by-step explanation:

There does not exist a "quarter circle" as a circle with a radius of 4 units, the only notable circle that does exist is the unit circle, that is the circle where the radius is equal to 1, represented by the equatin x^2 + y^2 = 1

The term "quarter circle" actually does refer to a fourth part of a circle, not to a circle of radius 4.

So the statement is false

6 0
3 years ago
Given that circumference of a circle is 44m. Calculate it's area​
dimaraw [331]

Answer:

Area=154.062 m^{2}

Step-by-step explanation:

As Circumference of a circle is given by;

C=2\times \pi\times r

As the circumference is 44m so we can calculate the value of r by using the above formula.

44=2\times \pi \times r\\\\\frac{44}{2\pi} =r\\\\\implies r=\frac{22}{\pi} =7.003 m

Now to Calculate the Area of a Circle.

As the area of a circle is,

Area =\pi \times r^{2}\\ Area=\pi \times (7.003)^{2} \\Area=\pi \times 49.039\\Area=154.062m^{2}

3 0
2 years ago
How does a digit in the 10,000s place compare to a digit in the thousands place?
Delvig [45]
While a digit in the thousands place has a value 1,000 times the value of the digit. So to compare you can do 10,000 / 1,000 = 10, which means that a digit in the ten thousand place values ten times what the same digit values is it is the thousand place.
4 0
3 years ago
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