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anyanavicka [17]
3 years ago
10

What is the radius of a sphere with a surface area of 100πcm2?

Mathematics
1 answer:
Leona [35]3 years ago
5 0

Answer:

5cm

Step-by-step explanation:

A=4πr2 =  100πcm2

r = 5

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What is the result when 6x2 – 13x + 12 is subtracted from –3x2 + 6x + 7?
max2010maxim [7]
The answer is (2) 9x2-19x+5.Because you need to first put them together linking by minus sign
7 0
3 years ago
What is 2/4 + 4/5 - 7/10 ? Please help
Radda [10]
Make sure they have all common denominators
\frac{2}{4} + \frac{4}{5} - \frac{7}{10}

\frac{2}{4} * \frac{5}{5} = \frac{10}{20}

\frac{4}{5} * \frac{4}{4} = \frac{16}{20}

\frac{7}{10} * \frac{2}{2} = \frac{14}{20}

\frac{10}{20} + \frac{16}{20} - \frac{14}{20}

Add \frac{10}{20} + \frac{16}{20} = \frac{26}{20}
\frac{26}{20} - \frac{14}{20} = \frac{12}{20}

To simplify, you must find the largest common factor which 4
In \frac{12}{20}
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7 0
3 years ago
What is the area of a rectangle of 5/9 m in length and 7/8 m in width
Andru [333]

Answer:

35/72 m^2

Step-by-step explanation:

Rectangle Formula: l*w=Area

Switch the variables with the numbers given:

\frac{5}{9} *\frac{7}{8} =Area

Multiply the top and bottom:

5*7 = 35

9*8 = 72

35/72 = Area

6 0
3 years ago
I am giving brainlest to anyone who answers both right, and a thanks for if you answer 1 right!
sdas [7]

Answer:

A)

The x- intercepts are (0, 0) and (4, 0)

<u>As per graph negative values of y are in the interval:</u>

  • x = (-∞, 0)∪(4, +∞)

B)

<u>Positive values of y are in the interval:</u>

  • x = (0, 4)
6 0
3 years ago
(Q5) Decide if the function is an exponential function. If it is, state the initial value and the base. y=3.1^x
ycow [4]

Answer:

D

Step-by-step explanation:

Exponential equation takes the form  y=ab^x  where

a is the initial value ( a ≠ 0), and

b is the base ( b ≠ 1)

The equation given can be written as  y=3.1^x\\y=1*3.1^x. Thus, it is an exponential equation.

So a = 1 and b = 3.1

Thus we can say that the initial value = 1 and the base is 3.3

6 0
3 years ago
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