All categories

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>.

You might be interested in

What algebraic property is demonstrated in the equation below? 6 + 4(7x – 2) = 6 + 28x – 8 *

Vlad1618 [11]

Answer:

Distributive

Step-by-step explanation:

I was to lazy to add an explanation

6 0

3 years ago

Read 2 more answers

If 13sin a = -5 and tan a > 0, use a diagram to evaluate: 3cos a.

Crank

Answer:

naguguluhan ako ahh wait lang solve ko

4 0

3 years ago

XYZ is an isosceles triangle inscribed I a circle, center O. XY=XZ= 20 and YZ=18. Calculate to 3.s.f.

Vlad1618 [11]

Answer: 17.9

Step-by-step explanation:

Using Heron's formula:

Area of a triangle is given by:

√s(s-a)(s-b)(s-c)

Where a, b and c ara sides of the triangle and

S = (a+b+c) / 2

In the question above sides are :

XY=XZ= 20 and YZ=18

S = (20 + 20 + 18) / 2 = 58/2 = 29

Area = √29(29-20)(29-20)(29-18)

Area = √29(9)(9)(11)

Area = √25839

Area = 160.74513

Altitude = height(h)

Area = 0.5 × base × height

Base = yz = 18

160.74513 = 0.5 × 18 × h

160.74513 = 9 × h

h = 160.74513 / 9

h = 17.9 (3 s.f)

5 0

3 years ago

What is the solution of the system of equations?y = –4x + 10y = –2x – 6(–22, 8)(8, –22)(–2, –2)(–2.67, 20.67)?

forsale [732]

The solution is the second choice:
(8, -22)

_____
That is the point on the graph where the line intersect.

5 0

3 years ago

Drag each tile to the correct box. Order the expressions from least value to greatest value.

wel

Answer:

$\frac{5}{-1.6}$

Step-by-step explanation:

We will solve the given expressions and find the answer in decimals.

1). $5\frac{6}{15}+(-2\frac{4}{5})$ = $5\frac{2}{5}-2\frac{4}{5}$

= 5.4 - 2.8

= 2.6

2). $-3\frac{3}{10}-(-\frac{7}{20})=-3\frac{3}{10}+\frac{7}{20}$

= -3.3 + 0.35

= -2.95

3). $\frac{5}{-1.6}=-\frac{5}{1.6}$

= -3.125

4). (-4.5) × (-2.3) = 10.35

Solution of the expressions in the increasing order will be,

-3.125 < -2.95 < 2.6 < 10.35

$\frac{5}{-1.6}$

5 0

4 years ago