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bixtya [17]
2 years ago
14

Round to the nearest whole number to estimate the sum of 23.19 and 13.7. Then give the exact sum.

Mathematics
2 answers:
Olegator [25]2 years ago
8 0
If you round 23.19 to the nearest whole number you get 23 and if you round 13.7 you get 13. 13+23 is 33. The real numbers are 23.19 and 13.7, add them together and you get 36.89. The exact sum is 36.89 (:
9966 [12]2 years ago
3 0
OK 23.19+13.7 equals 36.89. But if you round to the nearest whole number you get 37.
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Which expression is equivalent to the area of metal sheet required to make this square-shaped traffic sign? (5 points) A square
andrezito [222]
The correct answer is d) 4x² - 4x + 1.

The area of a square is found by squaring the side length:

(2x-1)² = (2x-1)(2x-1) = 2x*2x - 2x*1 - 2x*1 - 1(-1) = 4x² - 2x - 2x + 1 = 4x²-4x+1
3 0
2 years ago
Read 2 more answers
What is average unit rate for 200/12.54
Nadusha1986 [10]

Answer:

Approximately 16.

Step-by-step explanation:

If you just divide 200/12.54, you get about 15.9 which rounds to 16.

3 0
3 years ago
There is an ice cream and candy shop next door that is the same size as your bakery. How many thirtieths of the space does it ta
SSSSS [86.1K]

Answer:

135,000 times

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.  Please have a look at the attached photo.

<u>We need to know the size of your bakery store. </u>

As we can see, the entire shopping center is:  45000 square feet and your shop is 1/10 of that space

=> Your shop area is: 45000*1/10 = 4500 square feet

In the question, they want to know how many thirtieths of the space does it take up, so let say thirtieths in numerical is: 1/30

Hence, the number of thirtieths it takes:

\frac{Area}{Thirtieths} = \frac{4500}{\frac{1}{30} } = 135,000 times

Hope it will find you well.

8 0
2 years ago
Which of the values shown are potential roots of f(x) = 3x3 – 13x2 – 3x + 45? Select all that apply.
galina1969 [7]

Answer:

All potential roots are 3,3 and -\frac{5}{3}.

Step-by-step explanation:

Potential roots of the polynomial is all possible roots of f(x).

f(x)=3x^3-13x^2-3x+45

Using rational root theorem test. We will find all the possible or potential roots of the polynomial.

p=All the positive/negative factors of 45

q=All the positive/negative factors of 3

p=\pm 1,\pm 3,\pm 5\pm \pm 9,\pm 15\pm 45

q=\pm 1,\pm 3

All possible roots

\frac{p}{q}=\pm 1,\pm 3,\pm 5\pm \pm 9,\pm 15\pm 45,\pm \frac{1}{3},\pm \frac{5}{3}

Now we check each rational root and see which are possible roots for given function.

f(1)= 3\times 1^3-13\times 1^2-3\times 1+45\Rightarrow 32\neq 0

f(-1)= 3\times (-1)^3-13\times (-1)^2-3\times (-1)+45\Rightarrow \neq 32

f(-3)= 3\times (-3)^3-13\times (-3)^2-3\times (-3)+45\Rightarrow \neq -144

f(3)= 3\times (3)^3-13\times (3)^2-3\times (3)+45\Rightarrow =0\\\\ \therefore x=3\text{ Potential roots of function}

Similarly, we will check for all value of p/q and we get

f(-5/3)=0

Thus, All potential roots are 3,3 and -\frac{5}{3}.


5 0
2 years ago
Read 2 more answers
What is the absolute value of 2|x+5|-3=7
Paladinen [302]

Answer:

Step-by-step explanation:

x= -5 or x=2

that's what i think it is.

4 0
3 years ago
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