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3 years ago

Which of the b values satisfy the following inequality?

Mathematics

1 answer:

nikdorinn [45]3 years ago

5 0

Answer:

b and c

Step-by-step explanation:

so to answer this one we just plug in all of the answer choices to see which ones satisfy the inequality

for a we plug in b and get 5<8-3 or 5<5 which is not true so it cant be a

next we plug in 9, 5<9-3 or 5<6 so b is a correct answer

next we plug in 10, 5<10-3 or 5<7 which is correct so c is also a correct answer

hope this helps (:

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In a geometric sequence, a2 = 2, a3 = 20, & a4 = 200.

babymother [125]

Answer:

the first one

the first one Step-by-step explanation:

the first one Step-by-step explanation:from the formula Un =ar^n-1

where a is 2

where a is 2 r = 20/2=10

where a is 2 r = 20/2=10 so Un= 10×2^n-1

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5 0

3 years ago

0.5+a=3.2 Answer please

Black_prince [1.1K]

0.5 + a = 3.2

3.2 - 0.5 = 2.7

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3 years ago

What is the mean absolute deviation of the data: 10, 20, 15, 17, and 13?

Rufina [12.5K]

Answer:

2.8

Step-by-step explanation:

1) find the mean of the data set. = 15

2) find the abs value of the diff between each data value and the mean: |data value – mean|.

|10-15|=5, |20-15|=5, |15-15|=0, |17-15|=2, |13-15|=2

3) find the sum of the abs values of the diff = 14

4) divide the sum of the abs value by the number of data values = 14/5 = 2.8

5 0

3 years ago

What is the equation of a circle whose center is begin ordered pair negative 4 comma 6 end ordered pair and whose radius is 9 cm

solong [7]

Answer:

$(x+4)^2+(y-6)^2=81$

Step-by-step explanation:

We want to find equation of a circle with center (-4,6) and radius 9cm.

The equation of a circle with center (h,k) and radius $r$ units is given by;

$(x-h)^2+(y-k)^2=r^2$

We substitute the radius and the center to obtain;

$(x+4)^2+(y-6)^2=9^2$

The required equation is:

$(x+4)^2+(y-6)^2=81$

3 0

3 years ago

Which statement is true about the domain of y = 3(2^-x)? Explain.

SVEN [57.7K]

We want to determine the domain of ${y=3 \cdot 2^{-x}=3 \cdot ({2^{-1}})^x=3 \cdot ({ \frac{1}{2}})^x$

any function of the form $y=f(x)=a \cdot b^x$ is called an "exponential function",
the only condition is that b is positive and different from 1, and a is a nonzero real number.

The domain of such functions is all real numbers.

That is for any x, the expression 3(2^-x) "makes sense".

Answer: The domain is all real numbers

8 0

3 years ago