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dybincka [34]
4 years ago
8

What is 5 less than 15 as an expression

Mathematics
1 answer:
Aleonysh [2.5K]4 years ago
4 0
The phrase "5 less than" means we are subtracting 5 from some amount. And that amount is 15

So, 15 - 5 is the answer.
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At the end of the first day three of the cricketers scored these runs 28, 61 and 39
prohojiy [21]

Answer:

His friend took one from 61 and added it to 39. That made it easy to mentally add 40 and 60 to get 100. Then he mentally added 28 to 100 to get 128.

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3 years ago
To find the equation of a line, we need the slope of the line and a point on the line. Since we are requested to find the equati
murzikaleks [220]

Answer:

x-4y+4=0

f(x)=\sqrt x and x=4

Step-by-step explanation:

We are given that a curve

y=\sqrt x

We have to find the equation of tangent at point (4,2) on the given curve.

Let y=f(x)

Differentiate w.r.t x

f'(x)=\frac{dy}{dx}=\frac{1}{2\sqrt x}

By using the formula \frac{d(\sqrt x)}{dx}=\frac{1}{2\sqrt x}

Substitute x=4

Slope of tangent

m=f'(x)=\frac{1}{2\sqrt 4}=\frac{1}{2\times 2}=\frac{1}{4}

In given question

m=\lim_{x\rightarrow a}\frac{f(x)-f(a)}{x-a}

\frac{1}{4}=\lim_{x\rightarrow 4}\frac{f(x)-f(4)}{x-4}

By comparing we get a=4

Point-slope form

y-y_1=m(x-x_1)

Using the formula

The equation of tangent at point (4,2)

y-2=\frac{1}{4}(x-4)

4y-8=x-4

x-4y-4+8=0

x-4y+4=0

8 0
3 years ago
ABCD is a parallelogram. If AB= 3x -7 and CD = 5x - 19, find x.
kakasveta [241]

Answer:

x=6

Step-by-step explanation:

3x-7=5x-19

12=2x

x=6

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Step-by-step explanation:

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A veterinarian is going to administer a medication which has a 3.2 liquid to drug
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The he gives some drugs
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