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3 years ago

Please help photomaths isn't working and I don't get how to do this

Mathematics

1 answer:

DochEvi [55]3 years ago

7 0

<h2>Answer:</h2>

Our functions are:

$f(x) = -5x + 12\\g(x) = -\frac{3}{2}x + 4\\$

To solve this, we must use the expression g(-10) - f(3).

$-\frac{3}{2}(-10) + 12 - [-5(3)] + 12\\\\15 + 12 - [-5(3)] + 12\\\\15 + 12 - (-15) + 12\\\\27 - (-15) + 12\\\\42 + 12\\\\54$

The value of the expression g(-10) - f(3) is <em>15</em>.

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Can someone help me with this problem plz

BabaBlast [244]

Answer:

Step-by-step explanation:

4 goes perfectly into 8 twice and 12 three times

6 0

3 years ago

An airplane flies with a constant speed<br> of 840 km/h. How far can it travel in<br> 1 hour?

WITCHER [35]

Answer:

840 km

Step-by-step explanation:

The speed expression ...

840 kilometers per hour

means the plane files 840 kilometers in each hour.

In 1 hour, it will travel 840 km.

5 0

2 years ago

Of all customers purchasing automatic garage-door openers, 70% purchase a chain-driven model. Let X = the number among the next

otez555 [7]

Answer:

P(X > 10), n = 15, p = 0.7

P(X > 10) =P(10 < X ≤ 15) = P(11 ≤ X ≤ 15) = P(X = 11, 12, 13, 14, 15)

=P(X = 11) + P(X =12) + P(X = 13) + P(X =14) + P(X = 15) (because these are disjoint events)

Step-by-step explanation:

See attached image for detailed explanation

7 0

3 years ago

4(3x^2y^4)^3 / (2x^3y^5)^4

tatyana61 [14]

Solving the expressions $\frac{4(3x^2y^4)^3}{(2x^3y^5)^4}$ we get $\frac{27}{4x^{6}y^{8}}$

Step-by-step explanation:

We need to Solve the expression: $\frac{4(3x^2y^4)^3}{(2x^3y^5)^4}$

Solving:

$\frac{4(3x^2y^4)^3}{(2x^3y^5)^4}$

$=\frac{4(3^3x^6y^{12})}{(2^4x^{12}y^{20})}\\=\frac{4(27x^6y^{12})}{(16x^{12}y^{20})}\\=\frac{108x^6y^{12}}{16x^{12}y^{20}}$

Applying exponent rule: $\frac{x^a}{x^b}=x^{a-b}$

$=\frac{108x^{6-12}y^{12-20}}{16}\\=\frac{27x^{-6}y^{-8}}{4}$

Another exponent rule says: $x^{-a}=\frac{1}{x^a}=$

$=\frac{27}{4x^{6}y^{8}}$

So, solving the expressions $\frac{4(3x^2y^4)^3}{(2x^3y^5)^4}$ we get $\frac{27}{4x^{6}y^{8}}$

Keywords: Solving Exponents

Learn more about Solving Exponents at:

#learnwithBrainly

8 0

3 years ago

Easy algebra! Please help! Will mark brainiliest!

Inessa [10]

Answer:

y = $97749e^{x}$

Step-by-step explanation:

a) Let Area be the independent variable and Price of the homes sold be dependent on the area.

Let x represents the area and y represents the price.

We will plot the data in excel using trend line function.

The model so obtained is:

y = $97749e^{0.00002x}$

Rounding values to the nearest hundredth, we get

y = $97749e^{x}$

8 0

3 years ago