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tatiyna
3 years ago
7

(-8) - 2. This problem could also be written as -8 - 2. Remember that thinking about a number line will help you to solve. Ident

ify where the first number would be found on the number line. Then, if you are subtracting from that number, you move to the left. If you are adding to that number, you move to the right.
Mathematics
2 answers:
masha68 [24]3 years ago
8 0

Answer: It is -10

Explanation: This is because if you subtract from a negative you are actually adding to it.

Rus_ich [418]3 years ago
5 0

Answer:

-10

Step-by-step explanation:

So first you would locate -8 on the number line. (It's to the left of 0.) Then you subtract 2. This means you are basically going left 2 places.

(-8)-2=-10

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Answer:

3 3/7

Step-by-step explanation:

12 / 3 1/2 = 12 / 3.5 = 24/7 = 3.42857142857 = 3 3/7

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3 years ago
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harina [27]

Answer:

The third one.

Step-by-step explanation:

The GCF between 10, 8, and 6 is 2, but they all have x, so the GCF for the variables is x. Divide the original value of the trinomial by the GCF and it will be factored.

Hope this helps!

8 0
3 years ago
Right △ABC has its right angle at C, BC=4 , and AC=8 .
PolarNik [594]

Answer:

Part A) sin(A)=\frac{\sqrt{5}}{5}

Part B) tan(B)=2

Part C) sec(A)=\frac{\sqrt{5}}{2}

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

Find the length side AB (hypotenuse of the right triangle)

Applying the Pythagorean Theorem

AB^2=BC^2+AC^2

substitute the given values

AB^2=4^2+8^2

AB^2=80

AB=\sqrt{80}\ units

simplify

AB=4\sqrt{5}\ units

step 2

Find sin(A)

we know that

In the right triangle ABC

sin(A)=\frac{BC}{AB} ----> by SOH (opposite side divided by the hypotenuse)

substitute the given values

sin(A)=\frac{4}{4\sqrt{5}}=\frac{\sqrt{5}}{5}

step 3

Find tan(B)

we know that

tan(B)=\frac{AC}{BC} ----> by TOA (opposite side divided by adjacent side)

substitute the values

tan(B)=\frac{8}{4}=2

step 4

Find sec(A)

we know that

sec(A)=\frac{1}{cos(A)}

cos(A)=\frac{AC}{AB} ----> by CAH

so

sec(A)=\frac{AB}{AC}

substitute the values

sec(A)=\frac{4\sqrt{5}}{8}

simplify

sec(A)=\frac{\sqrt{5}}{2}

3 0
4 years ago
Please help Please help
bonufazy [111]

Answer:

The cosine of angle C is 5/13, or approximately 0.38.

Step-by-step explanation:

To solve this problem, we must remember what the cosine of an angle represents.  The cosine of an angle is equal to the ratio of the adjacent side divided by the hypotenuse.

From the diagram, we can determine that the adjacent side length is 10 and the hypotenuse is 26.

Therefore, the cosine of angle C is:

10/26 = 5/13 (simplified)

Hope this helps!

5 0
4 years ago
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