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Crazy boy [7]
4 years ago
12

What is the value of the expression? 200 - 42 + 9 · 10

Mathematics
2 answers:
OleMash [197]4 years ago
7 0

Answer: 247

Step-by-step explanation:

Use PEMDAS order. (Parentheses, exponents, multiplication, division, addition, subtraction)

200 - 42 + 9 · 10

200-42+ 90

157+90

247

tekilochka [14]4 years ago
5 0

Answer:

248

Step-by-step explanation:

Given: 200 -42 + 9.10

First we have to multiply 9 and 10, we get

= 200  - 42 + 90

Now we have to the positive numbers 200 and 90

= 290 - 42

Subtract 42 from 200, we get

= 248

Answer : 248

Hope you will understand the concept.

Thank you.

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IrinaK [193]

Answer:

See below

Step-by-step explanation:

<u>1. Solve for y</u>

  • x = 0
  • z = 5x + 3 ⇒ z = 5*0 + 3 = 3
  • 4y + 6z = 26 ⇒ 4y + 6*3 = 26 ⇒ 4y = 26 - 18 ⇒ 4y = 8 ⇒ y = 2
  • y = 2
  • Option B

<u>2. Solve for x</u>

  • -7x - y = 6 ⇒ y = -7x - 6
  • x - 3y = 18 ⇒ x - 3(-7x - 6) = 18 ⇒ x + 21x + 18 = 18 ⇒ 22x = 0⇒ x = 0
  • x = 0
  • Option C

<u>3. Solve for x</u>

  • y = -4
  • z = 3x - 12
  • 3x + 3y = -6 ⇒ 3x + 3(-4) = -6 ⇒ 3x = 12 - 6 ⇒ 3x = 6⇒ x = 2
  • x = 2
  • Option B

<u>4.....................</u>

  • 0 = 1
  • The equation is false so it means no solution

<u>5...................... </u>

  • 0 = 0
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8 0
3 years ago
Line ab contains points A (-1,3) and B (5,3). Line AB has a slope that is
babymother [125]
Finding the slope is super easy. Just subtract the second y value with the first. (0) Then do the same for x value. (6)
The answer is 0. 
6 0
3 years ago
Read 2 more answers
En un triángulo obtusángulo, uno de los ángulos mide 20° mas que el otro. El tercer ángulo, mide el doble que el mayor de los do
Troyanec [42]

Answer:

La medida del primer ángulo es 30°, la medida del segundo ángulo es 50° y  el tercer ángulo mide 100°.

Step-by-step explanation:

Siendo "x" el valor de un ángulo del triángulo obtusángulo, sabes que uno de los ángulos, llamado segundo ángulo, mide 20° más que el primero. Este segundo ángulo se representa como x + 20°.

Además, un tercer ángulo mide el doble que el mayor de los dos, que en este caso es el ángulo cuya expresión es x + 20°. Por lo que el doble de este será 2*(x + 20)°, que será la medida del tercer ángulo.

Teniendo en cuenta que la suma de los ángulos interiores de un triángulo es 180°. Entonces, es posible sumar los valores de cada uno de los ángulos e igualarlos a 180°:

x + x + 20° + 2*(x + 20°) = 180°

Resolviendo:

x + x + 20° + 2*x + 2*20° = 180°

x + x + 20° + 2*x + 40° = 180°

4*x + 20° + 40° = 180°

4*x + 60° = 180°

4*x = 180° - 60°

4*x = 120°

x = 120° ÷ 4

x = 30°

Entonces, la medida del primer ángulo es 30°. El segundo ángulo es calculado como x + 20° = 30° + 20° = 50° mientras que  el tercer ángulo es 2*(x + 20°) = 2*(30° + 20°) = 2*(50°) = 100°

<u><em>La medida del primer ángulo es 30°, la medida del segundo ángulo es 50° y  el tercer ángulo mide 100°.</em></u>

3 0
3 years ago
What is the proportion?????
Alenkasestr [34]

Answer: a=10

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Help please ! thank u sm
astraxan [27]

Given:

The figure of triangle LNM.

To find:

The Law of Sines for the given triangle.

Solution:

Law of sines: In triangle ABC,

\dfrac{\sin A^\circ}{a}=\dfrac{\sin B^\circ}{b}=\dfrac{\sin C^\circ}{c}

Similarly, the Law of Sines for the given triangle LNM is:

\dfrac{\sin L^\circ}{l}=\dfrac{\sin N^\circ}{n}=\dfrac{\sin M^\circ}{m}

Therefore, the correct option is b.

7 0
3 years ago
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