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3 years ago

Round decimal numbers 8.72

Mathematics

2 answers:

likoan [24]3 years ago

7 0

It can be 9 as a whole number. Or 8.7 rounded to the tenth place

kari74 [83]3 years ago

3 0

Answer:

the answer is 9

Step-by-step explanation:

You might be interested in

. If a, b, c are real numbers such that ac # 0

galben [10]

Answer:

if one equation has no real roots, the other must have real roots. Hence, at least one equation has real roots.

Step-by-step explanation:

The discriminant of the first equation is ...

d1 = b^2 -4ac

The discriminant of the second equation is ...

d2 = b^2 +4ac

Suppose the first equation has no real roots. Then ...

d1 < 0

b^2 -4ac < 0

b^2 < 4ac

We know that b^2 is non-negative, so this means 4ac is positive. For that case,

d2 = b^2 +4ac

is the sum of a positive number and a non-negative number so will be positive. When the discriminant is positive, there are two real roots.

When the first equation has no real roots, the second one must have two real roots.

Suppose the second equation has no real roots. Then ...

d2 < 0

b^2 +4ac < 0

b^2 < -4ac

Again, b^2 is non-negative, so -4ac must be positive. For this case, the sum ...

d1 = b^2 -4ac

is the sum of a non-negative and a positive number, so will be positive. The positive discriminant means there are two real roots.

When the second equation has no real roots, the first one must have two real roots.

One of these equations will have real roots, or not. If not, the other must have (distinct) real roots.

7 0

3 years ago

A person invests $100,000 at a nominal 12% interest per year compounded continuously. What will be the value of the

tester [92]

Answer:

25,000,000

Step-by-step explanation:

$100,000 / 0.12 = $833333.333333

$833333.333333 × 30 yrs = 25,000,000 in Dollars

6 0

3 years ago

Read 2 more answers

Please may someone help me with this question thank you

Maru [420]

Answer:

C. $\frac{12}{7}$

Step-by-step explanation:

To find the slope when you know two points, use this formula:

M = y₂ - y₁ ÷ x₂ - x₁

M = (4 - (-8)) ÷ (0 - (-7))

M = 12 ÷ 7

M = $\frac{12}{7}$

Hope that helps.

3 0

3 years ago

Write each statement as an algebraic expression. The sum of a number c and its square.

Nikitich [7]

A sum means that two numbers are added together. A square means that a number is raised to the second power.

The sum of a number c and its square can be written with this algebraic expression:

$c + c^{2}$

3 0

3 years ago

Fernanda runs a large bowling league. She suspects that the league average score is greater than 150 per

murzikaleks [220]

Answer:

1.20

Step-by-step explanation:

Let mean be represented by M and standard deviation by d. The score will be x and sample number of games be n

To get the test statistic, t for Fernanda's test, we use the formula

$t=\frac {M-x}{\frac{s}{\sqrt n}}$

Substituting 156 for mean, M then 150 for score x and 30 for standard deviation while 36 for n then

$t=\frac {156-150}{\frac{30}{\sqrt 36}}$

t=1.20 when put in two decimal place

6 0

3 years ago