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4 years ago

What is the standard form of -5a(7) + 4a(2)

Mathematics

1 answer:

Bas_tet [7]4 years ago

8 0

$-5a(7) + 4a(2) \\ \\ -35a + 4a \times 2 \\ \\ -35a + 8a \\ \\ -27a \\ \\ Answer: \fbox {-27a}$

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Given that 3 * 6 = 12 and 2 * 5 = 9, then a * b may be defined as

Anton [14]

Answer:

3 *6=12

3+6=9

9+3=12

2*5=2+5=7

7+2=9

a*b=a+b+a

5 0

2 years ago

The chairlift at a ski resort rises a total of 2600 feet from where it starts. The angle of elevation is about 22.3 degrees. How

Monica [59]

Answer:

6852 feet .

Step-by-step explanation:

Refer the attached figure

The chairlift at a ski resort rises a total of 2600 feet from where it starts. i.e.AB = 2600 feet

The angle of elevation is about 22.3 degrees.i.e.∠ACB= 22.3°

We are supposed to find How far do riders travel on the lift i.e.AC

In ΔABC

We will use trigonometric ratio

$Sin\theta =\frac{Perpendicular}{Hypotenuse}$

$Sin22.3^{\circ} =\frac{AB}{AC}$

$AC=\frac{2600}{Sin22.3^{\circ}}$

$AC=\frac{2600}{0.379456159529}$

$AC=6851.9$

So, riders travel 6852 feet .

3 0

3 years ago

Read 2 more answers

Maxwell buys a bag of dog food that contains 18 cups of food, Maxwell feeds his dog 1 cups each day. Maxwell says he will be abl

LenKa [72]

Answer:

Incorrect

Step-by-step explanation:

Well since there is only 18 cups of dog food he will only be able to feed his dog for 18 days since he feeds his dog 1 cup a day.

7 0

3 years ago

Read 2 more answers

A rectangle has length of (5x+2) and a width of (3x-1) with an area of 308 units squared. Find the perimeter

Alex777 [14]

Answer:

haach f,f msfmavfb

Step-by-step explanation:

5 0

3 years ago

True or False!!!! The measure of a tangent-tangent angle is twice the difference of the measures of the intercepted arcs.

lozanna [386]

answer : False

The measure of a tangent-tangent angle is one - half the difference of the measures of the intercepted arcs.

The diagram is attached below

AB and BC are the two tangents

By exterior angle theorem

∠3 = ∠2 + ∠4

So ∠2 = ∠3 - ∠4

Now we find angle 3 and 4, we know when a chord and tangent intersect at a point then the measure of angle is one half of measure of intercepted arc

∠3 = $\frac{1}{2} * arc(ADC)$

∠4 = $\frac{1}{2} * arc(AC)$

∠2 = ∠3 - ∠4

∠2 = $\frac{1}{2} * arc(ADC)$ - $\frac{1}{2} * arc(AC)$

∠2 = $\frac{1}{2} ( arc(ADC) - arc(AC))$

The measure of a tangent-tangent angle is one half the difference of the measures of the intercepted arcs.

7 0

3 years ago