3 years ago

Seven tenths of a number plus 14 is less than forty-nine

Mathematics

1 answer:

Virty [35]3 years ago

7 0

7/10n + 14 = 49
7/10n = 35
n = 35 x 10/7
n = 50

You might be interested in

A train goes twice as fast downhill as it can go uphill, and 2/3 feet as fast uphill as it can go on level ground. If it goes 12

Yuri [45]

Answer:

0.5hrs

Step-by-step explanation:

Let the speed downhill be $x$ ,

Speed uphill is $0.5x$ . We are told than speed uphill is $\frac{2}{3}$ the speed on flat ground. Therefore the speed on level ground will be $\frac{0.5x}{2/3}=0.75x$ .

From this info, we can obtain the actual speed, $v_g$ on level ground as:

$x=120m/h\\0.75x=v_g\\\\\therefore v_g=\frac{0.75x \times 120m/h}{x}\\v_g=90m/h$

speed, distance and time have the relation $s=d/t$ so to obtain time to cover 45miles:

$t=d/s\\=45/90\\=0.5h$

Hence it takes 0.5hrs to cover 45miles on flat ground.

4 0

3 years ago

Given the points (9,9) and (-6, -10) find the slope.<br><br> m =

Ivanshal [37]

1. Observe question

2. Employ Point-Slope formula

(y2 - y1)/(x2 - x1 )=

(-10-9)/(-6-9) =

-19/-15=

19/15

Slope: 19/15

5 0

2 years ago

Read 2 more answers

Destiny is planning a ice cream social. I local park right outside shelter for $40 in charges nine dollars per gas for ice cream

zysi [14]

Answer:

Step-by-step explanation:

8 0

2 years ago

Solve 5z(z+2)(z−1)=0.

fredd [130]

Answer:

if you are solving for z it is:

Step-by-step explanation:

z=0,-2,1

5 0

3 years ago

How to solve r-9≤-25

nataly862011 [7]

Answer:

Step-by-step explanation:

That’s the answer (the pic)

4 0

3 years ago