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3 years ago

What is the value of 4x2 + 5x when x= 1?

Mathematics

2 answers:

Darina [25.2K]3 years ago

6 0

Answer:

Explanation:

Insert 1 for 'x'

(4)(1)(2) + 5(1)

(4)(1)(2) = 8

5(1) = 5

8 + 5 = 13

Katyanochek1 [597]3 years ago

5 0

Substitute 1 where x is...
That should be 4x2+5(1)
Using BODMAS we simplify: 8+5(1) = 8+5 = 13
So the answer is 13.
Btw, 5(1) is just 5x1.

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Mr Atkinson has 5 1/4 lb of dry fish food. He will put an equal amount of food into 3 containers. How much fish food will be in

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3 years ago

Lan scores 5 out of 60 mark test.what is his score as a percentage to 1 decimal place

artcher [175]

Answer:

.1 approx.

Step-by-step explanation:

5/60 and x/100%

Cross multiplying...

5 x 100% = 5

5/60 ~= .1

( I dunno if I am right, so please check first.)

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3 years ago

Compound interest of $1000 is invested at 10% compounded continuously, the future value s at any time t in years is given by s=1

crimeas [40]

Answer: 6.93 years

Step-by-step explanation:

Given

Rate of interest is $r=10\%$

Future value is given by $s=1000e^{0.1t}$

For the investment to double itself, i.e. $s=2000$

$\Rightarrow 2000=1000e^{0.1t}\\\Rightarrow 2=e^{0.1t}\\\\\text{Taking log both sides}\\\\\Rightarrow \ln 2=0.1t\\\\\Rightarrow t=\dfrac{\ln 2}{0.1}\\\\\Rightarrow t=6.93\ \text{years}$

It takes around 6.93 years to double the investment.

8 0

2 years ago

Find the slope C(-8,-7) and D (13,-1

DaniilM [7]

So you will use slope formula which is m = (y2 -- y1) / (x2 -- x1)

-1 minus -7=6

13 minus -8=21

Remember it changes to a positive Keep,Change,Change

So its 6/21

Or 1/4

Ask questions if you still need help

3 0

2 years ago

100 POINTS

JulijaS [17]

Answer:

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2 years ago

Read 2 more answers