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2 years ago

How many times does 6 go into 85

Mathematics

2 answers:

saul85 [17]2 years ago

7 0

If you divide 85 by 6, you will get 14.16 and the closest number will be 14.

Sophie [7]2 years ago

3 0

14.1666667 times. Rounded- 14.167 pr 14.17

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6(21)+6(31) evaluate

Artist 52 [7]

6(21)=72 6(31)=186
add 72+186=258

258 is the answer

6 0

2 years ago

Read 2 more answers

What is the sum of 20x^2-10x-30

ivann1987 [24]

Answer:

The sum of the roots is 0.5

Step-by-step explanation:

The correct question is

What is the sum of the roots of 20x^2-10x-30

we know that

In a quadratic equation of the form

$ax^{2} +bx+c=0$

The sum of the roots is equal to

$-\frac{b} {a}$

in this problem we have

$20x^{2} -10x-30=0$

$a=20\\b=-10\\c=-30$

substitute

$-\frac{(-10)} {20}=0.5$

Verify

Find the roots of the quadratic equation

The formula to solve a quadratic equation is equal to

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

$a=20\\b=-10\\c=-30$

substitute

$x=\frac{-(-10)\pm\sqrt{-10^{2}-4(20)(-30)}} {2(20)}$

$x=\frac{10\pm\sqrt{2,500}} {40}$

$x=\frac{10\pm50} {40}$

$x=\frac{10+50} {40}=1.5$

$x=\frac{10-50} {40}=-1$

The roots are x=-1 and x=1.5

The sum of the roots are

$-1+1.5=0.5$ ----> is ok

5 0

3 years ago

Can you answer these questions for me please!

Leni [432]

a) 95

b) 25 : 1

a) 1 X 760

= 95

b) 450 : 18

255 : 9

25 : 1

6 0

3 years ago

Read 2 more answers

(30 points!)

Vera_Pavlovna [14]

Answer:

The lengths of the sides are 12cm, 28cm and 36cm.

Step-by-step explanation:

Let the smallest side be 4x, the middle side be 7x and the largest side be 9x.

Smallest side + middle side + largest side = 60cm

4x + 7x + 9x = 60

20x = 60

x = 60 ÷ 20

x = 3

Smallest side (4x) = 3 × 4

= 12

Middle side (7x) = 7 × 4

= 28

Largest side (9x) = 9 × 4

= 36

8 0

3 years ago

Please help with this graphing question

cricket20 [7]

B. The equation poloma gave has a positive slope but the scatterplot has a negative correlation

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3 years ago