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3 years ago

11

To solve an equation what do you use to isolate the variable?

1 answer:

IgorLugansk [536]3 years ago

3 0

Yes like this pic° show everything

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Emma is 9 1/4 years old. How many MONTHS old is Emma?<br> Please Help!

Bezzdna [24]

Emma is 114 months old.

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3 years ago

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Question 2 (5 points)<br> What is the value of x?<br> HELP ASAP

Anton [14]

Step-by-step explanation:

$In \: \triangle HDT, \: BM || DT.. (given) \\ \\ \therefore \: \frac{HM}{MT} = \frac{ HB}{ BD} \\ (by \: basic \: proportionality \: theorem) \\ \therefore \: \frac{6}{x} = \frac{9}{15} \\ \\ \therefore \: x= \frac{15 \times 6}{9} \\ \\ \therefore \: x= \frac{90}{9} \\ \\ \therefore \: x= 10 \\ \\$

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3 years ago

The fuel economy of a car, measured in miles per gallon, is modeled by the function ƒ(s) = –0.009s2 + 0.699s + 12 where s repres

Kisachek [45]

Answer:

The maximum fuel economy of the car is 25.57225

Step-by-step explanation:

we are given

$f(s)=-0.009s^2+0.699s+12$

where

where s represents the average speed of the car, measured in miles per hour

So, we have to maximize f(s)

So, firstly we will find derivative

$f'(s)=-0.009*2s+0.699*1+0$

$f'(s)=-0.018s+0.699$

now, we can set it to 0

and then we can solve for s

$f'(s)=-0.018s+0.699=0$

$s=\frac{233}{6}$

To find maximum fuel economy , we can plug s into f(s)

$f(\frac{233}{6})=-0.009(\frac{233}{6})^2+0.699(\frac{233}{6})+12$

$f(\frac{233}{6})=25.57225$

So,

The maximum fuel economy of the car is 25.57225

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3 years ago

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Anyone to help me answer this question am giving the brainliest

Arlecino [84]

$▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪$

As we know,

$\boxed{\sin(a + b) = \sin(a) \cos(b) + \cos(a) \sin(b) }$

and

$\boxed{\sin(a - b) = \sin(a) \cos(b) - \cos(a \sin(b) ) }$

now, let's add them as shown ~

$\boxed{\sin(a + b) + \sin(a - b)}$

$\boxed{ \sin(a) \cos(b) + \cos(a) \sin(b) + \sin(a) \cos(b) - \cos(a) \sin(b) }$

$\boxed{2 \sin(a) \cos(b) }$

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3 years ago

Solve: Four more than a number is more than 13 <br> Inequality :<br> Solution :

KonstantinChe [14]

Answer:

x + 4 > 13

x > 9

Step-by-step explanation:

In this equation, the value of the "number" is unknown, so I used a variable (x) to represent the unknown value.

FOUR more than x would mean addition.

x + 4.

According to this word problem, four more than x is larger than thirteen, so a greater than symbol was used.

Like this,

x + 4 > 13.

We can find the solution to 'x' by subtracting 4 from 13.

Like this,

13 - 4 = 9

Therefore, the solution is x > 9

And, the inequality is x + 4 > 13.

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3 years ago