3 years ago

How to get 19 using 4 fours

Mathematics

1 answer:

Brrunno [24]3 years ago

8 0

(4 + 4 - 0.4) / 0.4 = (8 - 0.4) / 0.4 = 7.6 / 0.4 = 19

You might be interested in

Which two fractions have a sum of - 7/24

fiasKO [112]

1/6 and -11/24

because 1/6 = 4/24

4/24 + (-11/24) = -7/24

6 0

3 years ago

URGENT!!! PLEASE HELP!!!

tankabanditka [31]

Answer: 6.5

Step-by-step explanation:

Since all squares are rhombi, and diagonals of a rhombus intersect at right angles, this means that

$13x+5.5=90\\\\13x=84.5\\\\x=6.5$

8 0

2 years ago

Use the discriminant to describe the roots of each equation. Then select the best description.

zhuklara [117]

◆ QUADRATIC RESOLUTIONS ◆

$given \: \: equation \: \: - \\ \\ 3 {x}^{2} +7x - 2 = 0 \\ \\ here \: a = 3 \: \: , \: \: b = 7 \: , \: \: c = - 2 \\ therefore \: \: , \\ discriminant \: = {b}^{2} - 4ac = 7 3 \\ \\ using \: quadratic \: formula \: \: , \\ \\ x = \frac{ - b + \sqrt{d} }{2a} = \frac{ - 7 + \sqrt{73} }{6} \: \: \: \: \: ans.\\ \\ also \: \: , \\ \\ x = \frac{ - b - \sqrt{d} }{2a} = \frac{ - 7 - \sqrt{73} }{6} \: \: \: \: \: \: ans.$

6 0

3 years ago

Which is a true statement, 5 times 4 plus 1 equals 25 or 3 plus 7 times 2 equals ? Explain your answer.

Elan Coil [88]

5*4+1=21 this statement is not true ,but 3+7*2=20 is a true statement

3 0

3 years ago

There were 60 ducks living in a pond. If the number living at the pond increased by 30%, how many ducks now live at the pond?

timama [110]

Answer:

Step-by-step explanation:

You take the original total: 60, and multiply it by 30 to get 1,800. You then divide 1,800 by 100 to get 18. 18 is your 30%. Now, you add the 30% to 60 getting your total number of ducks: 78.

The equation version:

$\frac{a}{60} = \frac{30}{100}$

It is just proportions.

3 0

3 years ago