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2 years ago

13. The sum of 4 and three times a number is 19.

Mathematics

2 answers:

lesya692 [45]2 years ago

7 0

Answer:3x + 4 = 19

Step-by-step explanation:

Feliz [49]2 years ago

3 0

Answer:

3x+4=19

Step-by-step explanation:

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Find the length of side AB Give answer to 3 significant figures

Rina8888 [55]

Answer:

AB = 8.857 cm

Step-by-step explanation:

Here, we are given a right angle $\triangle ABC$ in which we have the following things:

$\angle A = 90 ^\circ\\\angle C = 41 ^\circ\\\text{Side }BC = 13.5 cm$

Side BC is the hypotenuse here.

We have to find the side AB.

Trigonometric functions can be helpful to find the value of Side AB here.

Calculating $\angle B$ :

Sum of all the angles in $\triangle ABC$ is $180^\circ$ .

$\Rightarrow \angle A + \angle B + \angle C = 180^\circ\\\Rightarrow 90^\circ + \angle B + 41^\circ = 180^\circ\\\Rightarrow \angle B = 49^\circ$

We know that cosine of an angle is:

$cos \theta = \dfrac{\text{Base}}{\text{Hypotenuse}}\\\Rightarrow cos B = \dfrac{AB}{BC}\\\Rightarrow cos 49^\circ = \dfrac{AB}{13.5}\\\Rightarrow AB = 13.5 \times 0.656\\\Rightarrow AB = 8.857 cm$

So, side AB = 8.857 cm .

6 0

2 years ago

PLS HELP FROM 4 THROUGH 9 I BEG U PLEASEEEE

jasenka [17]

Answer:

4. 33 = 33

5. 19 > 10

6. 1 = 1

7. 0.95 > 0.9

8. 39 > 38

9. 14 > 2

10. x = 4

11. m = 44

12. p = 3

13. $z=\frac{15}{23}$

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2 years ago

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Please help me this is kinda hard

yuradex [85]

All sides of a square/cube are the same. Since this is a cube, you'll find the volume by "cubing" (get it?) 4.4m.

4.4³ or 4.4 * 4.4 * 4.4 = 85.184m³ but you can round that to 85m³

I hope that helps!

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3 years ago

What is the supplement of a 95° angle

ivanzaharov [21]

Supplement is 180- angle
180-95 = 85

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2 years ago

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Identify the terms and the like terms in this expression.

adoni [48]

Answer:

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2 years ago

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