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g100num [7]
3 years ago
11

Evaluate b2c-1 for b = 8 and c = -4. -16 1/16 16 256

Mathematics
2 answers:
Bumek [7]3 years ago
7 0
B²c-¹ = (8)²(–4)-¹ = 64(–¼) = –16
nata0808 [166]3 years ago
7 0

Answer:  The correct option is (B) -16.

Step-by-step explanation:  We are given to evaluate the value of the following expression for b = 8 and c = -4 :

E=b^2c^{-1}.

To find the value of expression (i), we need to substitute the values of b and c in equation (i).

We will be using the following property of exponents :

x^{-a}=\dfrac{1}{x^a}.

Therefore, from equation (i), we get

E\\\\=b^2c^{-1}\\\\=8^2\times (-4)^{-1}\\\\\\=\dfrac{64}{-4}\\\\=-16.

Thus, option (B) is correct.

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It's a little blurry sorry please help
Ghella [55]

<u>Answer:</u>

It's X=2

<u>Working out:</u>

<u>(left one):</u>

2(x+3)=10

2x+6=10

2x=10-6

2x=4

x=2

Working out:

(right one):

2(x+3) must be all divided by 2 so it will be x+3 and same for 10, it will be 5 so...

x+3=5

x=5-3

x=2

Hope it helps ^---^

3 0
3 years ago
Read 2 more answers
6
Ede4ka [16]

Answer:

5 percent per annum

Step-by-step explanation:

interest rate:

interest: $1800

principal: $18000

duration: 2 years

1800/ 18000 * 100

result is 10%

Since interest is 10% in 2 years, 10% / 2

interest is 5% per year.

8 0
3 years ago
What are the steps to solving this? 70-8x=56+x
guapka [62]

Answer:

x = 14/9

Step-by-step explanation:

70 - 8x = 56 + x

- 8x - x = 56 - 70

- 9x = - 14

- x = - 14/9

x = 14/9

7 0
4 years ago
Read 2 more answers
What is the equation of the given line in the point-slope form
Genrish500 [490]
First using the given two points we can find the slope (m) of the line

Slope = m =  \frac{Rise}{Run} \\  \\ &#10;m= \frac{4-1}{3-0} \\  \\ &#10;m=1

Thus the slope of given line is 1.

Using slope and a point (0,1) we can write the equation in point slope form as

y - 1= 1(x-0)
y - 1 = x

The above equation is the point-slope form of the equation.
4 0
4 years ago
When a jar of fruit is 2/3 of the way full it can hold 2 1/4 cups of fruit what fraction of the jar is full when it only contain
Natali [406]

Answer:

8/27

Step-by-step explanation:

<h2><u>Fractions</u></h2>

a jar of fruit is 2/3 of the way full it can hold 2 1/4 cups of fruit

what fraction of the jar is full when it only contains one cup of fruit?

by using these statements , we can solve this through <u>cross multiplication</u>:

fraction that the jar is full                   :           number of cups of fruit

                 \frac{2}{3}                                         :                        2 \frac{1}{4}

                 x                                         :                        1

\frac{2}{3}  = 2 \frac{1}{4} x

convert 2 \frac{1}{4} from a mixed fraction to an improper fraction

hence 2 1/4  = 9/4

solve

\frac{2}{3}  = \frac{9}{4} x.

x = \frac{2}{3} /  \frac{9}{4}

<u>x = 8/27</u>

<h3><u>when the cup contains one cup of fruit its fraction 8/27 full </u></h3>
5 0
4 years ago
Read 2 more answers
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