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3 years ago

Determine the answer to 3 + -5 and explain the steps using a number line

2 answers:

6 0

Adding a positive to a negative, you would look at the number with the greater absolute value, and that number would determine the sign of the sum.

5 - 3 = 2

Since 5 is bigger, you use that sign

-5

-2

Answer: -2

Westkost [7]3 years ago

6 0

-5 -4 -3 -2 -1 0 1 2 3 4 5

That is the number line. Add 3 to -5 and you get -2. ( a negative + a positive = A negative) ( A negative + a Negative = A positive)

Hope that helps :)

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In triangle abc, angle A is the right angle. What is the value of y?

Natalka [10]

Answer:

Step-by-step explanation:

In a right triangle, the side opposite to the 90 degree angle (here, side opposite to angle A) is known as the hypotenuse.

Also, the side that is "opposite" to the angle given (here side opposite is y to angle given 30 degrees) is the opposite side.

Since we want to find "opposite" and have "hypotenuse" , recalling trig ratios, we can say opposite/hypotenuse is the ratio SINE, so we can write:

$Sin(30)=\frac{y}{7}$

We solve for y:

$Sin(30)=\frac{y}{7}\\y = 7 Sin(30)$

Since the answer choice has angles in radians, we recall 30 degrees is $\frac{\pi}{6}$ radians.

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3 years ago

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Step-by-step explanation:

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2 years ago

Which expression is equivalent to<br> (5^-2)(5^-1)<br> A. -1/125<br> B. -1/5<br> C. 1/125<br> D. 1/5

n200080 [17]

Answer:

1/125

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3 years ago

Find 6 times as many as 2 divided by 6

scoundrel [369]

Rewrite this symbolically: 6(2/6) = 12/6 = 2 (answer)

An equally good approach would be to cancel the 6's, obtaining 2 (answer)

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UkoKoshka [18]

The true statements about the triangles RST and DEF are: (a), (d) and (e)

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The statement ΔRST ≅ ΔDEF means that the triangles RST and DEF are congruent.

This above implies that:

The triangles can be mapped onto each other by rigid transformations such as reflection, translation and rotation
The transformation does not include dilation
Corresponding sides are congruent

The above means that the possible true statements are: (a), (d) and (e)