All categories

3 years ago

Tell weather the given value is a solution of the inequality

Mathematics

2 answers:

Iteru [2.4K]3 years ago

7 0

Hello there!

No, the number given is not a solution of the inequality

r - 3 ≤ 9

Let's start by adding 3 to both sides

r - 3 + 3 ≤ 9 + 3

r ≤ 12

I hope this helps. Good luck with your studies~

natta225 [31]3 years ago

4 0

Yes, 8 is a solution

r - 3 ≤ 9; r = 8

plug in 8 to r

(8) - 3 ≤ 9
5 ≤ 9 (true)

hope this helps

You might be interested in

If two polygons are similar, they are congruent. Always true sometimes true or never true?

charle [14.2K]

Answer:

It is true.

Step-by-step explanation:

congruent polygons have the exact same size and are a perfect match because all corresponding parts are congruent (equal). ... This means that if two polygons are similar, then their corresponding angles are congruent

5 0

2 years ago

What is the zero in the quadratic function f(x)= 9x^2-54x-19?

Alex17521 [72]

Answer:

6.33... and 0.333...

Step-by-step explanation:

The quadratic formula is

$x=\frac{-b+\sqrt{b^2-4ac} }{2a}$ .

It is important because while some quadratics are factorable and can be solved not all are. The formula will solve all quadratic equations and can also give both real and imaginary solutions. Using the formula will require less work than finding the factors if factorable. We will substitute a=9, b=-54 and c=-19.

$x=\frac{-b+/-\sqrt{b^2-4ac} }{2a}\\x=\frac{-(-54)+/-\sqrt{(-54)^2-4(9)(-19)} }{2(9)}\\x=\frac{54+/-\sqrt{2916+684} }{18}$

We will now solve for the plus and the minus.

The plus,,,

$x=\frac{54+\sqrt{3600}}{18}\\x=\frac{54+60}{18}\\x=\frac{114}{18}\\x=6.3$

and the minus...

$x=\frac{54-\sqrt{3600}}{18}\\x=\frac{54-60}{18}\\x=\frac{-6}{18}\\x=-0.333...$

8 0

3 years ago

*Will mark Brainliest (10 points)* Please explain, thanks!

MAVERICK [17]

Standard form Ax + By = C
so
(y - y1) = m(x - x1)
given (5, -7) and m = -1/5
so
y + 7 = -1/5(x - 5)
-5y - 35 = x - 5
x + 5y = -30

answer
d. x + 5y = -30

5 0

2 years ago

Write a real-world problem that involves dividing a decimal by a whole number. Solve.

marysya [2.9K]

In 15 hours bob makes 7.5 boxes. how many boxes can he make in one hour?

so 15 hours=7.5 boxes
divide both sides by 15 to get hours
1 hour=7.5/15
answer is 1 hour=0.5 boxes

7 0

3 years ago

The product of 14 and the sum of 30 and an unknown number is equal to-196

Leto [7]

14 + 30 + 152 =196 14+30=44 44-196=152

4 0

3 years ago