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3 years ago

Which expression is equivalent to 4 -(-7)? A 7+4, B 4-7, C -7-4, D -4+7

1 answer:

8 0

Hi there! You are subtracting a negative number, which is basically the same thing as adding, because two negatives make a positive. B and C is out, because they do not fit the expression. You are actually adding both numbers and anytime you have to subtract a negative number, you add. When you do basic math, 4 + 7 is 11. Both numbers are negative and D does not work, because you're adding from a negative number. The only answer choice that has the expression is A. The answer is A.

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Find the value of the expression a--b* for a = 2 and b= 1

Sergeeva-Olga [200]

Answer:

Step-by-step explanation:

Given the expression a --b

Given that

a = 2

b = 1

Substitute into the expression

a--b

= 2 --1

= 2 - (-1)

= 2 + 1

= 3

Hence the required value is 3

7 0

3 years ago

Help! Given that tanθ=-1, what is the value of secθ, for 3π/2<θ<2π?

user100 [1]

Answer: Choice B) $\sqrt{2}$

Work Shown:

$\sec^2(\theta) = \tan^2(\theta) + 1\\\\\sec^2(\theta) = (\tan(\theta))^2 + 1\\\\\sec^2(\theta) = (-1)^2 + 1\\\\\sec^2(\theta) = 2\\\\\sec(\theta) = \sqrt{2}\\\\$

Note: secant is positive in quadrant Q4, when theta is between 3pi/2 radians and 2pi radians (270 degrees and 360 degrees). So that's why we don't consider the minus form of the plus minus.

5 0

2 years ago

Qu.com/game/U2FdGVkXWONIO MOLISKONDOOMOOON704022 KOVO2.820073022000267grype

DanielleElmas [232]

This is incomplete, why did you include a link to the game?

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3 years ago

There were 160 people who voted at the town council meeting. Of these people, 30% voted for building a new basketball court in t

tatuchka [14]

Answer:

there are a 112 against

Step-by-step explanation:30% of 160=48 ( 160*0.30=48)

160-48=112

6 0

2 years ago

Solve the equation below for c.

tiny-mole [99]

Answer c = (a-b)/d

Step-by-step explanation:

subtract b and divide by d

8 0

3 years ago