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2 years ago

Solve equation by completing the square 5n^2-3n-10=15

Mathematics

1 answer:

VARVARA [1.3K]2 years ago

5 0

These are the two answers you could get

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Robert mixed 113 liters of blue paint with 123 liters of red paint to make 3 liters of purple paint. To make a new batch of purp

MAVERICK [17]

Answer:

$Blue =1\frac{3}{5}$

Step-by-step explanation:

Given

$Blue = 1\frac{1}{3}$

$Red = 1\frac{2}{3}$

Required

Determine the amount of blue paint when Red = 2

To do this, we make use of the following equivalent ratios

$Ratio = Blue : Red$

When $Blue = 1\frac{1}{3}$ and $Red = 1\frac{2}{3}$

$Ratio = 1\frac{1}{3} : 1\frac{2}{3}$

When Red = 2

$Ratio = Blue : 2$

Equate both ratios

$Blue : 2 = 1\frac{1}{3} : 1\frac{2}{3}$

Convert to division

$\frac{Blue}{2} =1\frac{1}{3} / 1\frac{2}{3}$

Convert fractions to improper fraction

$\frac{Blue}{2} =\frac{4}{3} / \frac{5}{3}$

$\frac{Blue}{2} =\frac{4}{3} * \frac{3}{5}$

$\frac{Blue}{2} =\frac{4}{5}$

Make Blue the subject

$Blue =\frac{4}{5}*2$

$Blue =\frac{8}{5}$

$Blue =1\frac{3}{5}$

4 0

3 years ago

Witch statement best describes how to determine whether f(x) =x^3+5x+1 is an even function?

34kurt

A.Determine whether –(x3 + 5x + 1) is equivalent to x3 + 5x + 1. b.Determine whether (–x)3 + 5(–x) + 1 is equivalent to x3 + 5x + 1.
c. Determine whether –x3 + 5x + 1 is equivalent to –(x3 + 5x + 1).
d. Determine whether (–x)3 + 5(–x) + 1 is equivalent to –(x3 + 5x + 1)

A function is even if f(x) = f(-x) for all x.

f(-x) = -x³ + 5(-x) + 1
f(-x) = -x³ - 5x + 1

b.Determine whether (–x)3 + 5(–x) + 1 is equivalent to x3 + 5x + 1.

3 0

3 years ago

Trevor season 8 red birds. He sees 5 more red birds than bluebirds. How many bluebirds does Trevor see?

aliya0001 [1]

Answer:

3 blue birds

Step-by-step explanation:

8-5=3

7 0

3 years ago

Ken keeps paper clips in a box that is the shape of a cube .Each side of the cube is 3 inches.What is the volume of the box?

Pachacha [2.7K]

To find volume you use the formula length×width×height. a cube has all same measurements. So 3×3×3 is 27. the volume is 27 inches cubed

3 0

3 years ago

Sally's bank account had a balance of 230 at the beginning of the month. She had two deposits of 50 and 420 and just one withdra

Romashka [77]

Answer:

510

Step-by-step explanation:

Sally bank account had a beginning balance of 230

She made two deposits of 50 and 420

50+420

= 470

She made a withdrawal of 190

Therefore her balance at the end of the month can be calculated as follows

470+230

= 700

= 700-190

= 510

Hence the balance at the end of the month is 510

8 0

2 years ago