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3 years ago

1 point

Mathematics

1 answer:

masha68 [24]3 years ago

6 0

Answer:

$4.25

Step-by-step explanation:

According to the question,she paid $0.25 for one day overdue,

So she kept the book for 17 days so we are to determine the amount he paid for the overdue

1 day=$0.25

17 days=x

Cross multiply

x=17×0.25

x=4.25

So she will have to pay $4.25 for 17 days overdue

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The cylinder is 20cm high and radius of its circular face is 3cm What is the total perimeter and area of the whole net?

trasher [3.6K]

Answer: $52\ cm,\ 176.55\ cm^2$

Step-by-step explanation:

Given

The cylinder is 20 cm high

The radius of the cylinder is $r=3\ cm$

The total area of the figure is the sum of the rectangle and two circles

$\Rightarrow \text{Perimeter P=}2[h+2r]\\\Rightarrow P=2[20+6]\\\Rightarrow P=52\ cm$

The total area of the figure is

$\Rightarrow \text{Area A=}h\times 2r+2\pi r^2\\\Rightarrow A=20\times 6+2\times \pi \times 3^2\\\Rightarrow A=120+18\pi\\\Rightarrow A=176.55\ cm^2$

3 0

2 years ago

What is the value of x? <br> -2/7x+6+1/7x=18 <br> x=

Alenkinab [10]

$- \frac{2}{7} x$ + 6 + $\frac{1}{7} x$ = 18

First, simplify $\frac{2}{7} x$ to $\frac{2x}{7}$ / Your problem should look like: $-\frac{2x}{7}$ + 6 + $\frac{1}{7} x$ = 18
Second, simplify $\frac{1}{7} x$ to $\frac{x}{7}$ / Your problem should look like: $- \frac{2x}{7}$ + 6 + $\frac{x}{7}$ = 18
Third, simplify $- \frac{2x}{7}$ + 6 + $\frac{x}{7}$ to $- \frac{x}{7}$ + 6 / Your problem should look like: $-\frac{x}{7}$ + 6 = 18
Fourth, regroup terms. / Your problem should look like: 6 - $\frac{x}{7}$ = 18
Fifth, multiply both sides by 7. / Your problem should look like: 42 - x = 126
Sixth, subtract 42 from both sides. / Your problem should look like: -x = 126 - 42
Seventh, simplify 126 - 42 to 84. / Your problem should look like: -x = 84
Eighth, multiply both sides by -1. / Your problem should look like: x = -84

Answer: x = -84

4 0

3 years ago

Help? what should i choose

igomit [66]

Answer:

Step-by-step explanation:

Angles on a straight line add up to 180 so:

180-110 = 70

As this is an isosceles triangle,

y must be 70.

We know y is 70 and there are 2y and one x. A triangle also adds up to 180.

This means:

2y+x = 180

2(70)+x = 180

140+x = 180

x = 40

x = 40 y = 70

8 0

3 years ago

Find the gradient (m) and y-intercept (c) of the equation y =-2/3x+1/3

quester [9]

Step-by-step explanation:

x÷z46 ×32% = 546% sorry i rlly need points

4 0

3 years ago

HELPP PLEASE!!! SOLVE AND SHOW ALL WORK!!!

ruslelena [56]

Answer:

Step-by-step explanation:

4x+6+3x+8=28

combine like terms

7x+14=28

subtract 14

7x=14

divide

x=2

if you plug it in you get-

4(2)+6+3(2)+8=

8+6+6+8=12+16=28

thats how you can check. if you want me to explain more i can totally help

4 0

3 years ago