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Amiraneli [1.4K]
3 years ago
14

Simplify -7x - (15y) + 3x - 2y

Mathematics
1 answer:
LUCKY_DIMON [66]3 years ago
3 0

Answer:

Step-by-step explanation:

combine like terms

-7x + 3x - 15y - 2y

-4x - 17y

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Plz help me on 15 plz thanks if you help
Nitella [24]
Units are simplified first when measurements are multiplied because the units can sometime be very large or small and do not have to be exact when measurements are precise.
8 0
3 years ago
"la temperatura mas baja conocida en la tierra es de 273° bajo cero mientras que la temperatura promedio de la superficie de la
skelet666 [1.2K]

Answer:

Variación de temperatura: 310°C

Step-by-step explanation:

La variación de temperatura entre la temperatura más baja conocida en la tierra (-273°C = 273° bajo cero) y la temperatura promedio de la tierra (37°C) será el valor absoluto de la diferencia de estos dos valores, es decir:

Variación de temperatura: |-273°C - 37°C|

Variación de temperatura: |-310°C|

<em>Como el valor absoluto de un número negativo es su valor positivo (|-x| = x)</em>

<h3>Variación de temperatura: 310°C</h3>
4 0
2 years ago
In △ACD, if AC ≅ AD, m∠A = (3x – 4)°, m∠C = (5x + 1)°, and m∠D = (7x – 27)°, find x and the measure of each angle. *
Tems11 [23]

Answer:

x = 14

A = 38

B = 71

C = 71

Step-by-step explanation:

Since we have a triangle, the addition of the measure of all the measure of the angles give 180

Thus;

3x-4 + 5x + 1 + 7x-27 = 180

15x-30 = 180

15x = 180 + 30

15x = 210

x = 210/15

x = 14

To get the measure of each of the angles, we substitute for x

A = 3x-4 = 3(14) - 4 = 38

B = 5x + 1 = 5(14) + 1 = 70 + 1 = 71

C = 7x - 27 = 7(14) - 27 = 98-27 = 71

5 0
2 years ago
The equation of this circle is (x + <br> )2 + (y + <br> )2 = <br> .
Alex787 [66]

Answer:

x2 + y2 = r2, and this is the equation of a circle of radius r whose center is the origin O(0, 0). The equation of a circle of radius r and center the origin is x2 + y2 = r2.

I think this is the answer.

7 0
2 years ago
HELPPPP PLEASEEEEEEEREEREEEE
Maksim231197 [3]

Answer:

the correct answer is b :)))))!!!

7 0
3 years ago
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