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ivanzaharov [21]
2 years ago
12

Can someone please help me with this algebra

Mathematics
2 answers:
Mrac [35]2 years ago
7 0

Answer:

B

Step-by-step explanation:

Novay_Z [31]2 years ago
5 0

Answer: d

Step-by-step explanation:

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Value of m varies directly as value of n and n=5 when m=12. What is n when m=18?
ohaa [14]
Simplify the problem down, so:

m = 12 & n = 5
m = 6 & n = 2.5 <span>(divided each number by 20)
</span>
Now m is a factor of 18. Multiply each number by 3.
Answer: m = 18 & <span>n = 7.5</span>
6 0
3 years ago
What is the value of the expression? - 16+ 12 <br>A. -28 <br>B. -4 <br>C. 4<br>D. 28​
mixer [17]

Answer:

B.  -4

Step-by-step explanation:

-16 + 12 = -4

7 0
3 years ago
Order from least to greatest: The square root of 64, 8.8, 26/3, 8 2/7
Eddi Din [679]

Square root 64 = 8

26/3 = 8 2/3 = 8.66666

8 2/7 = 8. 2857

So the order is sqrt(64) 8 2/7 26/3 8.8 <<<<< Answer

7 0
2 years ago
The bearing of Q from P is 150
Lynna [10]

Answer:

(i) see first attached diagram

(ii) QR = 22.67 km (2 dp)

(iii) 243°

Step-by-step explanation:

A bearing is the angle in degrees measured clockwise from north.

<u />

<u>Part (i)</u>

see first attached diagram

<u>Part (ii)</u>

The angles marked in blue on the second attached diagram are Consecutive Interior Angles.  In this case they add to 180° as the North lines are parallel.

The sum of angles around a point is 360°

⇒ m∠QPR (shown in red on the second attached diagram) = 360 - 150 - (180 - 15) = 45°        

To calculate the distance between Q and R (marked in red on the attached diagram), use the cosine rule.

⇒ QR² = PR² + QP² - 2(PR)(QP)cos(QPR)

⇒ QR² = 32² + 24² - 2(32)(24)cos(45)

⇒ QR² = 513.8839841...

⇒ QR = √513.8839841...

⇒ QR = 22.67 km (2 dp)

<u>Part (iii)</u>

We need to find the angle marked in green on the third attached diagram.

To do this, we need to find the angle marked in pink and the angle marked in orange, then subtract them from 360°

Pink angle = 180 - 150 = 30° (using the same consecutive angle theorem as before)

Orange angle (o) using the sine rule:

⇒ sin(o)/32 = sin(45)/QR

⇒ sin(o) = 32sin(45)/22.67

⇒ sin(o) = 0.9981652337...

⇒ o = 86.52868176...°

Therefore, the green angle = 360 - 30 - 86.52868176... = 243° (nearest degree)

8 0
2 years ago
2(2x+3×-4)+2(4x-6x+8) Cuanto es ?​
nikdorinn [45]
First you need to distribute the 2 into each equation and then add like terms. the answer is 6x + 8
3 0
3 years ago
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