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sdas [7]
3 years ago
9

Evaluate: 2·5\4^-2 A) 5\8 B B) 8\5 C) 40 D) 160

Mathematics
2 answers:
alexandr402 [8]3 years ago
3 0
D. 160 you simplify the expression to get your answer.
finlep [7]3 years ago
3 0

Answer:

160

Step-by-step explanation:

2*5  / 4^-2

PEMDAS

Exponents first

4^-2 = 1/4^2 = 1/16

Substituting this back into the equation

2*5 /  1/16

2*5 * 16

160

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Which equation represents a proportional relationship?
asambeis [7]

Given:

Four equations in the options.

To find:

The equation which represents a proportional relationship.

Solution:

If y is proportional to x, then

y\propto x

y=kx

where, k is the constant of proportionality.

In this case if x=0, then y=0. It means the graph of a proportional relationship passes through the origin.

From the given options, only option B, i.e., y=\dfrac{1}{4}x, is of the y=kx, where, k=\dfrac{1}{4}.

So, the equation y=\dfrac{1}{4}x represents a proportional relationship.

Therefore, the correct option is B.

6 0
3 years ago
For each give the correct METRIC unit of measure. Do NOT use the abbreviation. a. My foot is 21 (fill in blanks) long. b. My lar
Nataly [62]

Answer:

Inches

Gallons

Kilometers

Yards

Step-by-step explanation:

We are to proffer the appropriate unit of measurement for each scenario given below :

a. My foot is 21 inches long. (unit for measuring length which are usually small such a a person's foot)

b. My large aquarium holds 55 gallons of water. (volume measurement of liquid in a large container)

c. My dad drives 27 kilometers to work each day. (distance measurement which are moderately long)

d. I just bought 12 yards of carpet to cover my family room floor. (length measurement used for materials such as cloth, carpet, rugs e.t.c).

7 0
3 years ago
Please help, will give brainliest
rodikova [14]

Answer:

Number 3 : describe the behavior at the end of the graph: the line is increasing, also i believe thats non linear.

Step-by-step explanation:

Because the end segment of the graph goes up that means the line is increasing.

3 0
3 years ago
Use the functions f(x)=2x and g(x)=x^2+1 to find the value of each expression
Alinara [238K]

Answer:

1.  20

2. 23

3. 6

Step-by-step explanation:

We have that:

f(x) = 2x

g(x) = x² + 1

f(g(x)) is the composite function of f and g. So

f(g(x)) = f(x²-1) = 2(x²+1) = 2x² + 2

1. f(g(3))

f(g(x)) = 2x² - 2 = 2(3)² + 2 = 18 + 2 = 20

2. f(3)+g(4)

f(3) = 2(3) = 6

g(4) = 4² + 1 = 17

f(3) + g(4) = 6 + 17 = 23

3. f(5) - 2g(1)​

f(5) = 2(5) = 10

g(1) = (1)² + 1 = 2

f(5) - 2g(1) = 10 - 2*2 = 10 - 4 = 6

6 0
3 years ago
Shane wants to plant 28 marigold plants and 36 rose plants in his garden. What is the greatest number of rows possible if each r
Dennis_Churaev [7]

Answer:

HCF=2*2=4

Step-by-step explanation:

Given :   Shane wants to plant 28 marigold plants and 36 rose plants in his garden  

To Find :  the greatest number of rows possible  each row has the same

number of marigold plants and the same number of rose plants.​

Solution:

marigold plants  = 28

rose plants = 36

To find  the greatest number of rows possible  if each row has the same

number of marigold plants and the same number of rose plants.​

we need to find HCF of 28 and 36

28 = 2 x 2 x 7

36 = 2 x 2 x 3 x 3

HCF = 2 x 2  = 4

greatest number of rows possible  is 4

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6 0
3 years ago
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