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3 years ago

Factor 3x + 4x - 2. Explain your method.

Mathematics

1 answer:

irina [24]3 years ago

8 0

Answer: 7x-2

Step-by-step explanation: Just add the two x values 3x+4x=7x to get 7x-2.

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Assume you still have 9 customers to call today and you have an hour and a half until your next break (90 minutes). To get the c

mojhsa [17]

Answer:

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4 years ago

Follow me on brainy,and what is a+b+z+fg-y+up+f+r=

pickupchik [31]

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3 years ago

Which of the following theorems verifies that ABC~WXY?

Bumek [7]

Answer:

The correct answer is option B. AA

Step-by-step explanation:

Given two triangle:

$\triangle ABC$ and $\triangle WXY$ .

The dimensions given in $\triangle ABC$ are:

$\angle A = 27^\circ\\\angle B = 90^\circ$

We know that the sum of three angles in a triangle is equal to $180^\circ$ .

$\angle A+\angle B+\angle C = 180^\circ\\\Rightarrow 27+90+\angle C=180^\circ\\\Rightarrow \angle C = 63^\circ$

The dimensions given in $\triangle WXY$ are:

$\angle Y = 63^\circ\\\angle X = 90^\circ$

We know that the sum of three angles in a triangle is equal to $180^\circ$ .

$\angle W+\angle X+\angle Y = 180^\circ\\\Rightarrow \angle W+90+63=180^\circ\\\Rightarrow \angle W = 27^\circ$

Now, if we compare the angles of the two triangles:

$\angle A = \angle W = 27^\circ\\\angle B = \angle X= 90^\circ\\\angle C = \angle Y= 63^\circ$

So, by AA postulate (i.e. Angle - Angle) postulate, the two triangles are similar.

$\triangle ABC \sim \triangle WXY$ by AA theorem.

So, correct answer is option B. AA

7 0

3 years ago

Three times the sum of a number and 21 is at most -26

Anna007 [38]

It would be: 3(x + 21) ≤ -26
3x + 21 ≤ -26
3x ≤ -47
x < -47/3

In short, Your Answer would be -47/3 or 15.67

Hope this helps!

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3 years ago

Solve –9.4 Greater-than-or-equal-to 1.7x + 4.2.

Nutka1998 [239]

Answer:

x≤-8

Step-by-step explanation:

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3 years ago