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3 years ago

Help me with this question

Mathematics

1 answer:

Colt1911 [192]3 years ago

4 0

Step-by-step explanation:

just look at the graphic : what value do we have on the cost side, when we have 1 pounds on the amount side ?

all the answer options specify a price per pound. that is why we only need to focus on the price for one pound.

we see in the graphic, that for 1 pound the price is $4.

just to make sure, we can also work with the directly specified point (0.5, 2), which means that 0.5 pounds cost $2.

and the function is clearly a straight line.

so, every point on the function has the same y/x ratio (slope).

therefore,

2/0.5 = 4

now, what point with x=1 has the same ratio ?

y/1 = 4

y = $4

perfect, the results are identical. so, $4 per pound is the correct answer.

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Is x greater than less than, or equal to 100 degrees ?

Jet001 [13]

Answer:

It is probably equal to 100 degrees, but you have not given the context of the problem.

3 0

3 years ago

Hi need help on hw plz help me out my questions is - a rectangle has a length of 14cm and width 9.5cm the length increased by 6%

sweet-ann [11.9K]

Answer:

Part a) $21.9\%$

Part b) $82.03\%$

Step-by-step explanation:

we know that

The original area of rectangle is equal to

$A=(14)(9.5)\ cm^{2}$

if the length is increased by 6% and the width is by 15%

then

the new area is equal to

$A=[1.06(14)][1.15(9.5)]\ cm^{2}$

$A=(1.06*1.15)(14)(9.5)\ cm^{2}$

$A=(1.219)(14)(9.5)\ cm^{2}$

The new area is (1.219) times the original area

Part a) Calculate the percentage change in area of the rectangle

$1.219-1=0.219$

convert to percentage

$0.219*100=21.9\%$

Part b) what is the original area as a percentage of the increased area of the rectangle?

Divide the original area by the increased area

$\frac{(14)(9.5)}{(1.219)(14)(9.5)} =\frac{1}{1.219} \\ \\=0.8203$

Convert to percentage

$0.8203*100=82.03\%$

8 0

4 years ago

PLEASE PLEASE I NEED HELP

mrs_skeptik [129]

Answer:

12:42 pm

Step-by-step explanation:

that is my guess to be honest.

looking at the time intervals and the increase in the battery lvls it shows in 10- 10 minutes intervals the battery lvl increase at 9-8 percent and at the 20 minute time it increased by 20 percent so just add the time.

6 0

4 years ago

nora spend 1/4 of her pocket money on choclate ,1/8 pizz at end she had 40 dollar left how much did she have at the begging

Svetradugi [14.3K]

Answer:

$64

Step-by-step explanation:

1/4 + 1/8=3/8

8/8-3/8=5/8

8/8 x 40 x8/5

=$64

5 0

3 years ago

Read 2 more answers

The width of the rectangle is 2 more than the length. The area of the rectangle is 63 square inches. How long is the width?

wariber [46]

Answer:

9 inches

Step-by-step explanation:

Area of rectangle= length ×width

Let the length of the rectangle be x inches.

Width of rectangle= (x +2) inches

since the width is 2 more than the length.

63= x(x+2)

63= x(x) +2x

Bringing constant to one side,

x² +2x -63= 0

(x +9)(x-7) = 0 (factorise)

x+9= 0 or x-7= 0

x= -9 or x= 7

(reject)

width of rectangle

= 7+2

= 9 inches

*We reject x= -9 since the length of the rectangle cannot be a negative number.

4 0

4 years ago