3 years ago

What number is 40% of 90?

Mathematics

2 answers:

vlabodo [156]3 years ago

3 0

Answer:

Step-by-step explanation:

You multiply 40% by 90. Or make 40% 0.4 and multiply that by 90.

marysya [2.9K]3 years ago

3 0

Answer:

Step-by-step explination

You should take 40% then put it into decimal form. You should get 0.4 then multiply that by 90 and you should get 36.

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Solutions for 2x^2+18x=20, worth a TON, please only 100% answers ! Thank u !

victus00 [196]

Answer:

The solution of the given quadratic equation is 1 and (-10).

Step-by-step explanation:

$2x^2+18x=20$

$x^2+9x=\frac{20}{2}$

$x^2+9x-10=0$

$ax^2+bx+c=0$

Solving equation by quadratic formula:

Here , a = 1,b = 9, c = (-10)

$D=b^2-4ac=(9)^2-4(1)(-10)=121$

$x=\frac{-b+{\sqrt{D}}}{2a}=\frac{(-9)+\sqrt{121}}{2(1)}=1$

$x=\frac{-b-{\sqrt{D}}}{2a}=\frac{(-9)-\sqrt{121}}{2(1)}=(-10)$

The solution of the given quadratic equation is 1 and (-10).

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3 years ago

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pickupchik [31]

Answer:

Monday: 7.25

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Wednesday: 5.2

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2 years ago

what is the rate of change and initial value for this graph?

MAXImum [283]

Answer:

4/7

Step-by-step explanation:

the rate of change (aka slope) is the change in y over change in x and as y goes up 4 x goes up 7 so the rate of change is 4/7

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3 years ago

Use the following situation for the next few questions:

Olegator [25]

Answer:

5 oil changes.

Step-by-step explanation:

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3 years ago

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Leni [432]

Answer:

B - 16466

C - 13362

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Step-by-step explanation:

to find B add 11124 to 5342 (11124+5342=16466)

to find C subtract 3104 from 16466 (16466-3104=13362)

total value - add them all together

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