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3 years ago

3x²+√x-5 How do I start it off?

Mathematics

1 answer:

Rus_ich [418]3 years ago

3 0

Step-by-step explanation:

you can start off with the 3x and it's exponent and go on from there

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Two forces of 401 newtons and 477 newtons act on a point. The resultant force is 828 newtons. Find the

Ray Of Light [21]

Answer:

The answer is " $39.01^{\circ}$ "

Step-by-step explanation:

$\to R= 828\\\\\to F_1= 401\\\\\to F_2=477\\\\\to \bold{R=\sqrt{F_1^2+F_2^2+2F_1F_2 \cos \theta}}$

$828=\sqrt{401^2+477^2+2 \times 401 \times 477 \cos \theta}\\\\828=\sqrt{160801+227529+382554 \cos \theta}\\\\828=\sqrt{388330+382554 \cos \theta}\\\\$

square the above equation:

$(828)^2=(\sqrt{388330+382554 \cos \theta})^2\\\\$

$685584 =388330+382554 \cos \theta\\\\685584 -388330=382554 \cos \theta\\\\297254=382554 \cos \theta\\\\\cos \theta=\frac{297254}{382554}\\\\\cos \theta=0.777025\\\\\theta= \cos^{-1} 0.777025\\\\\theta= 39.01^{\circ}$

3 0

3 years ago

The amount of water in a bottle is reduced by 15% to 119 milliliters. How much water was originally in the bottle? ________ ml

lakkis [162]

Answer: 140 ml

Explanation:

let x be the original amount of water

x - 15% = 119
But x = 100% because it’s the original
=> 100% - 15% = 119ml
85% = 119ml

Find the amount of water in 15%:
85% = 119
15% = y

=> 85/15 = 119/y

Cross multiply:
85y = 15 x 119
85y = 1785
y = 1785/85
y = 21

But y = 15% therefore, 15% = 21ml

Back to our equation:
x - 15% = 119ml
x - 21ml = 119ml
x = (119 + 21)ml
x = 140ml

Therefore, the original amount of water is 140ml

7 0

3 years ago

What is the exact volume of a cylinder whose radius is 13 meters and whose height is 20 meters? Enter your answer, in terms of π

ddd [48]

Hello!

The equation to find the volume of a cylinder is

$V = \pi r^{2} h$

V is volume
r is radius
h is height

Put in the values you know

$V = \pi 13^{2} * 20$

Square the number

$V = \pi 169 * 20$

Multiply

$V = 3380 \pi$

The answer is $3380 \pi$

Hope this helps!

5 0

4 years ago

A bakery bakes 15 batches of 29 cupcakes each week. How many individual cupcakes do they make each week?

mylen [45]

Answer:

435 cupcakes baked in one week if that’s what your asking.

3 0

3 years ago

Read 2 more answers

CAN Someone help me out with Experimental probability.Ill give brainless

pentagon [3]

Answer:

1/4

Step-by-step explanation:

It is split into 8 equal parts, if you want to see how likely you're going to get red, look at how many red parts there are. 2. Now make it into a fraction! 2/8, but we need it to be simplified so it is 1/4.

Was that helpful?

4 0

4 years ago