18 % of 90 is what number

Mathematics

2 answers:

Lyrx [107]3 years ago

6 0

18 percent of 90 is 16.2

Ghella [55]3 years ago

5 0

18 % of 90 is 16.2

Hope this helps! :D

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Slope of (1,5) and (3,12)

Dima020 [189]

The slope is 3.5, also known as 3 1/2.

4 0

2 years ago

Can any kind soul help me please

bezimeni [28]

Answer:

p-q= -4

p=q-4

x^2 + px + q=0

=> x^2 + (q-4)x + q = 0

d= b^2-4ac

=(q-4)^2 - 4(1)(q)

= q^2 + 16 -8q - 4q

=q^2 -12q+16

given that D=16

q^2 -12q+16 = 16

=> q^2 -12q = 0

=> q^2 = 12q

=> q = 12q/q

=> q= 12

Therefore the value of q is 12 and the value of p is q-4 = 12-4= 8

Hope you understood............

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2 years ago

A car travels 20 mph slower in a bad rain storm than in sunny weather. the car travels the same distance in 2 hrs in sunny weath

ycow [4]

You can create two equations.

"<span>A car travels 20 mph slower in a bad rain storm than in sunny weather."
</span>
$\sf x-20=y$

Where 'x' represents speed in sunny weather and 'y' represents speed in rainy weather.

"<span>The car travels the same distance in 2 hrs in sunny weather as it does in 3 hrs in rainy weather."

$\sf 2x=3y$

</span>Where 'x' represents speed in sunny weather and 'y' represents speed in rainy weather.

We want to find the speed of the car in sunny weather, or 'x'. Plug in the value for 'y' in the first equation into the second equation.

$\sf \boxed{\sf x-20}=y$
$\sf 2x=3y\rightarrow2x=3(x-20)$

Distribute:

$\sf 2x=3x-60$

Subtract 3x to both sides:

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Divide -1 to both sides:

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2 years ago

During last year Adam's height increased from 125 cm to 135 cm. By how many percents did it change?

arlik [135]

he increase from 125cm to 135cm

first step :

$135 - 125 = 10cm$