All categories

3 years ago

What is the value of r? 1.2r−1 1.3r=40

Mathematics

1 answer:

Alexus [3.1K]3 years ago

4 0

the value is
1.2r-11.3r=40

-10.Ir=40
r=40/-10.1
r=-0.2525

hope this helps :):):)

You might be interested in

A home improvement store advertises 60 square feet of flooring for $287.00 including an $80.00 installation fee. How much does e

grin007 [14]

60 square feet= $287.00 + $80.00

= $367

1 square feet= $367 / 60

= $6.116666667

= $6.12 (to 2dp) ( answer)

4 0

3 years ago

Read 2 more answers

A discount store bought two dozen cameras for $14 each.

____ [38]

Answer:

72.24

Step-by-step explanation:

Price for each camera = 14

Number of camera = 2dozen = 12 x 2 = 24

Total cp = 24 x 14 = 336

~~~~~~~~~~~~~~

Price for each camera= 10.99

Number of cams = 24

Total sp = 10.99 x 24 = 263.76

Loss = 336 - 263.76 = 72.24

6 0

2 years ago

FIRST ANSWER GETS BRAINLIEST!!!

maksim [4K]

I believe it is A and C.

There are 6 slots on the wheel, so both the numbers in A and E can be divided/multiplied to fit this criterion. For example, 3 times 2 is 6 (the number of gender slots) and 1 times 2 is two, so two out of 6 art teachers will be female.

I hope this helps!!!

8 0

3 years ago

What is the standard form of the ordered pairs, (2,0) and (0,-6)

maxonik [38]

Hello!

Explanation:

Slope-intercept form: → $y=mx+b$

m: represents the slope and is constant.

b: represents the y-intercept.

You had to used their rise/run.

$\frac{rise}{run}$

$rise=y^2-y^1$

$run=x^2-x^1$

$x^1,y^1=(2,0)$

$x^2,y^2=(0,-6)$

$rise=y^2-y^1=-6-0=-6$

$run=x^2-x^1=0-2=-2$

$-6/-2=3$

<u><em>So, therefore the slope is 3.</em></u>

Hope this helps!

8 0

3 years ago

600 units of electricity and 100 units of gas were used for a total cost of $388. Next month, 400 units of electricity and 150 u

lana66690 [7]

Answer:

Cost per Electricity Unit= $0.61

Cost per Gas Unit= $0.22

Step-by-step explanation:

Suppose,

Cost per Electricity Unit: e

Cost per Gas Unit: g

for the first month condition, equation would be

$600*e+100*g=388...........................................(i)$

and for the next month condition, equation would be like

$400*e+150*g=277...........................................(ii)$

By solving both linear equations simultaneously, we get

e=0.61 and g=0.22

7 0

3 years ago