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VMariaS [17]
3 years ago
15

What is the product 2•(-7) A.-9 B.-2 C.-14 D.14

Mathematics
1 answer:
Leno4ka [110]3 years ago
6 0

Answer:

-14 (C)

Step-by-step explanation:

2 x -7 would be -14 because 2 x 7 is 14, but since 7 is negative it would be -14/C

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What is 3(5x-6)+2(x+8)?
Mashutka [201]

Answer:

I believe it's D. 17x-2

4 0
3 years ago
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Considering only the values of <img src="https://tex.z-dn.net/?f=%5Cbeta" id="TexFormula1" title="\beta" alt="\beta" align="absm
morpeh [17]

\large\boxed{Answer:}

We will use trigonometric identities to solve this. I will use θ (theta) for the angle.

First of all, we know that cotθ = 1/tanθ. This is a trigonometric identity.

We can replace cotθ in the expression with 1/tanθ.

sin\theta tan\theta sec\theta \frac{1}{tan\theta}

Simplify: 1/tanθ * tanθ = tanθ/tanθ = 1

So now, we have:

sin\theta sec\theta

Next, we also know that secθ = 1/cosθ. This is another trigonometric identity.

We can replace secθ with 1/cosθ in our expression.

sin\theta \frac{1}{cos\theta}

Simplify:

\frac{sin\theta}{cos\theta}

Our third trigonometric identity that we will use is tanθ = sinθ/cosθ.

We can replace sinθ/cosθ with tanθ.

Now we have as our final answer:

\large\boxed{b.\ tan\theta}

Hope this helps!

7 0
3 years ago
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Liz types 180 words in three minutes. At that rate how many minutes does it take her to type 1260 words
mash [69]

Answer:

21 minutes

Step-by-step explanation:

you first have to find how many words she writes in one minute. you do this by dividing 180/3=60. after that divide 1260 by 60 = 21 minutes.

4 0
3 years ago
(show the work please)
stiv31 [10]
Convert the mixed number into an improper fraction.

3 1/2 x 2 : 16/5 x 2

Calculate the product!

16/5 x 2 : 32/5

Solution: 32/5, (Alternative Forms: 6 2/5, 6.4)

Hope this helps!
5 0
4 years ago
−2.5+(−7.4)−(−1.2)−(+3.9)+(+0.6)
Alex73 [517]

Answer:

-12

Step-by-step explanation:

−2.5+(−7.4)−(−1.2)−(+3.9)+(+0.6)

Subtracting a negative is adding

−2.5+(−7.4)+(1.2)−(+3.9)+(+0.6)

Combine like terms

-9.9 +(1.2)−(+3.9)+(+0.6)

-8.7-3.9+.6

-12.6+.6

-12

7 0
3 years ago
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