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2 years ago

Find angle B. (Round to the nearest degree)

Mathematics

1 answer:

Lady bird [3.3K]2 years ago

6 0

Answer:

it should be around 90 degrees, but not exactly.

Step-by-step explanation:

I hope this helps

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What is the value of f(-1) when f(x)=2x+2? F(-1)=?

igomit [66]

Here is your function:

$f(x)=2x+2$

You're looking for f(-1). To get your answer, you have to replace all the x's with -1.

Here is your new equation:

$f(-1) = 2(-1)+2$

Multiply 2 by -1

$2 \times -1 = -2$

<em>Remember:</em>

MULTIPLYING

Positive(+) times negative(-) is equal to negative

Positive(+) times positive(+) is equal to positive

Negative(-) times negative(-) is equal to positive

Negative(-) times positive(+) is equal to negative

DIVIDING

Positive(+) divided by positive(+) is equal to positive

Positive(+) divided by negative(-) is equal to negative

Negative(-) divided by positive(+) is equal to negative

Negative(-) divided by negative(-0 is equal to positive

Since you're multiplying a negative number by a positive number, the answer will be negative.

Here is your new equation:

$f(-1) = -2+2$

Add -2 and 2:

$-2+2 = 0$

That means your answer is 0

↓

$f(-1)=0$

<em>If you have any questions, feel free to ask in the comments! :)</em>

5 0

3 years ago

the price of grapes at the grocery store is 1.44 per pound. There are approximately 0.45 kilograms in a pound. To the nearest pe

4vir4ik [10]

1 kg = 1pound/0.45=2.2222(2) pounds
1.44*2.222(2)=3.11 dollars per kilogram
Price of grapes is 3.11 dollars per kilogram

6 0

3 years ago

A tank is filled with 2 gallons of propane. The tank is being used to fuel a heater that uses propane at a rate of 0.5 gallons p

Vikki [24]

Answer:

fhiuqhficu3f

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Pls answer .....................

Taya2010 [7]

Answer:

2/3

Step-by-step explanation:

The slope is rise over run so all you have to do is make a triangle from the two points, count how many go up, which is 2, and how many go to the side, which is 3. The rise (2) goes on the top of the fraction, the run (3) goes on the bottom and then that's your answer.

7 0

2 years ago

Read 2 more answers

For each of 2 ≤ n ≤ 5, compute c(n, 0) + c(n, 2) + ⋅⋅⋅ + c(n, 2k), where 2k is largest even integer ≤ n, and compute c(n, 1) + c

Ksivusya [100]

Denote $C(n,m)=\dbinom nm$ . Then

$n=2\implies\displaystyle\binom20+\binom22=1+1=2$
$n=3\implies\displaystyle\binom30+\binom32=1+3=4$
$n=4\implies\displaystyle\binom40+\binom42+\binom44=1+6+1=8$
$n=5\implies\displaystyle\binom50+\binom52+\binom54=1+10+5=16$

In general, it would appear that

$\displaystyle\sum_{k=0}^{2\lfloor\frac n2\rfloor}\binom n{2k}=2^{n-1}$

On the other hand,

$n=2\implies\displaystyle\binom21=2$
$n=3\implies\displaystyle\binom31+\binom33=3+1=4$
$n=4\implies\displaystyle\binom41+\binom43=4+4=8$
$n=5\implies\displaystyle\binom51+\binom53+\binom55=5+10+1=16$

so that in general, we also get

$\displaystyle\sum_{k=0}^{2\lfloor\frac{n-1}2\rfloor+1}\binom n{2k+1}=2^{n-1}$

7 0

3 years ago