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3 years ago

What two numbers plus 85 equals 180 ?

Mathematics

1 answer:

belka [17]3 years ago

8 0

Answer:

You could do a number of different pairs of numbers but I would do 90+5+85=180.

Step-by-step explanation:

1. I would subtract 85 from 180

2. Then you would get 95

3. Then you could see how what two numbers equal 95

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A rectangular parking lot has an area of 315 square yards. The width of the parking lot is 5 yards longer than the length of the

Blababa [14]

Answer:

Dimension of parking lot is approximately 15.425 × 20.425 yards.

Step-by-step explanation:

Given:

Area of the parking lot = $315 \ yd^2$

Let the length of the parking lot be $'l'$

Also Given:

The width of the parking lot is 5 yards longer than the length of the parking lot.

so we can say that;

width of the parking lot, $w=5+l$

We need to find the dimension of parking lot.

Solution:

Now we can say that;

Area of rectangle is equal to length times width.

framing in equation form we get;

$lw=315$

Now substituting the value of w in above equation we get;

$l(l+5)=315\\\\l^2+5l=315\\\\l^2+5l-315=0$

Now we will find the roots using quadratic equation.

$ax^2+bx+c =0$

a = 1

b=5

c=-315

Formula for quadratic equation is;

$l =\frac{-b\±\sqrt{b^2-4ac}}{2a}$

First we will find;

$\sqrt{b^2-4ac} = \sqrt{5^2-4\times1\times-315} =\sqrt{25+1260}=\sqrt{1285} \approx35.85$

Now we will substitute the value we get;

$l =\frac{-5\±35.85}{2\times1}= \frac{-5\±35.85}{2}$

Now we will find 2 roots we get;

$l= \frac{-5+35.85}{2}= \frac{30.85}{2}\approx15.425\\\\OR\\\\l =\frac{-5-35.85}{2}= \frac{-40.85}{2} \approx -20.425$

Now we get 2 values of length one is positive and other is negative.

But length of parking lot cannot be negative hence we will discard the negative value.

Hence the length of the parking lot = 15.425 yards

Width of the rectangular parking lot = $l+5=15.425+5 =20.425$

Hence we can say that dimension of parking lot is approximately 15.425 × 20.425 yards.

3 0

3 years ago

Please help place the dots where the decimal numbers are on the number lines

Romashka [77]

Answer:

For the 0.6 put it on the 0.6

For the 0.43 put it closer to the 0.4

For the 5/100 put it on the 0.5

5 0

3 years ago

What is the answer to<br> 1. b+4=2b-5<br> 2. -6-29=5x-7<br> 3. 10h+12=8h+4<br> 4. 7a-17=4a+1

RoseWind [281]

Answer:

b=9

(assuming you meant -6x) x = -2

h = -4

a = 6

Step-by-step explanation:

6 0

3 years ago

What symbol makes this comparison true? 200 mL O 2 L <>

vova2212 [387]

Answer:

For the first case converting ml to L we got:

$200mL *\frac{1L}{1000 mL}= 0.2 L$

And we see that 0.2 L is lower than 2 L so then:

$200 mL < 2L$

And in the other way if we convert L to mL we got:

$2L *\frac{1000mL}{1L} = 2000 mL$

And we see that [/tex] 200mL < 2000 mL[/tex]

So then the answer would be <

Step-by-step explanation:

For this case we can solve this problem converting ml to L or converting L to ml.

For the first case converting ml to L we got:

$200mL *\frac{1L}{1000 mL}= 0.2 L$

And we see that 0.2 L is lower than 2 L so then:

$200 mL < 2L$

And in the other way if we convert L to mL we got:

$2L *\frac{1000mL}{1L} = 2000 mL$

And we see that [/tex] 200mL < 2000 mL[/tex]

So then the answer would be <

8 0

4 years ago

Solve for x... please help!

d1i1m1o1n [39]

Answer:

x = 69

Step-by-step explanation:

8 0

4 years ago