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3 years ago

Which of the following is equivalent to –(4 + (–7))?

Mathematics

1 answer:

Feliz [49]3 years ago

5 0

Answer:

-4+7, -4 - (-7)

Step-by-step explanation:

The given expression can be simplified:

-(4+(-7)) = -(4-7) = -(-3) = 3

The equivalent choices will all equal 3. Testing each choice:

-4+7 = 3

-4+(-7) = -4-7 = -11

4+(-7) = 4 - 7 = -3

-4 - (-7) = -4 + 7 = 3

Only the first and last choice are equivalent to the original expression.

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11. The scale for a drawing of the tennis court is

Ivenika [448]

Answer:

I believe the correct answer would be 220 meters.

Step-by-step explanation:

If one centimeter equals 2 meters, then you would have to multiply the width (5.5 cm.) by 2 and the length (10 cm.) by 2. After you multiply those, you get 11 meters for the width and 20 meters for the length. You then multiply those by each other, so 11x20, and you get 220.

3 0

4 years ago

Round 188,206 to the nearest thousand

Vinvika [58]

Answer:

188,000

Step-by-step explanation:

6 0

4 years ago

Now heres the tricky part

loris [4]

13. Answer: n ≥ 108

Step-by-step explanation:

18 ≤ n ÷ 6

×6 ×6

108 ≤ n → n ≥ 108

Note: The line under the inequality symbol represents a closed dot

Graph: 108 ·---------------→

************************************************************************************

14. Answer: x > -4

Step-by-step explanation:

-3x < 12

÷(-3) ÷(-3)

x > -4 Flip the inequality sign when × or ÷ by a negative

Note: No line under the inequality symbol represents an open dot

Graph: -4 o-----------→

4 0

3 years ago

Factor quadratic equation 6x.squared +41x + 63 = 0

vlabodo [156]

Answer:

x1= -9/2 ; x2= -7/3

Step-by-step explanation:

Rewrite to 6x^2 + 27x +14x +63 = 0

Factor and get 3x(2x + 9) + 7(2x + 9) = 0

Factor again and get (2x + 9)(3x + 7) = 0

Separate into possible cases -> 2x + 9 = 0; 3x + 7 = 0

The equation has two solutions: x1 = -9/2 and x2 = -7/3

Hope this helped!!

4 0

3 years ago

What is the equation of the line that passes through the point -4, —8) and has a slope of 4?

HACTEHA [7]

Answer:

y = 4x + 8

Step-by-step explanation:

A linear formula always follows by y = mx + c, where m is the gradient and c is the y-intercept or constant.

Since you know that the slope is 4, all you need to do is find the y-intercept (constant)

y = 4x + c

Sub in the points (-4, -8)

-8 = 4(-4) + c

-8 + 16 = c

c = 8

Hence, y = 4x + 8

5 0

4 years ago